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2,4-Dichlorophenoxyacetic acid

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1323:, an herbicide containing the less volatile 2,4-D choline salt, glyphosate, and an antidrift agent, for use in six states: Illinois, Indiana, Iowa, Ohio, South Dakota, and Wisconsin. In November 2015, the EPA attempted to withdraw its own approval of Enlist Duo, as a result of legal actions against both the agency and Dow by two U.S. groups. However, while it was implied that the approval was "gone" because of the action, in fact, Enlist Duo was still approved pending a decision by the courts. On January 25, 2016, the US Ninth Circuit Court of Appeals denied EPA's motion to vacate its Enlist Duo registration. Dow stated the product would be available in 15 US states and Canada for the 2016 crop season. 40: 49: 299: 204: 1076:
rice, and wheat. Cereals, in particular, have excellent tolerance to 2,4-D when it is applied before planting. 2,4-D is the cheapest way for farmers to control winter annual weeds by spraying in the fall, often at the lowest recommended rate. This is particularly effective before planting beans, peas, lentils, and chickpeas. The estimated use of 2,4-D in US agriculture is mapped by the US Geological Survey. In 2019, the latest date for which figures are available, this reached 45,000,000 pounds (20,000,000 kg) annually.
1308:, which concluded that the codex maximum residue limits were "not expected to be of concern for European consumers". The total chronic exposure represented less than 10% of the acceptable daily intake (ADI). 2,4-D is currently not approved for use on lawns and gardens in Denmark, Norway, Kuwait, and the Canadian provinces of Québec and Ontario. 2,4-D use is severely restricted in the country of Belize. In 2008, Dow AgroScience, LLC, sued the Canadian government for allowing Quebec to ban 2,4-D, but settled in 2011. 1027: 480: 485: 992: 1068: 1080:
and damage equipment. Along waterways, it is used to control aquatic weeds that might interfere with boating, fishing, and swimming or clog irrigation and hydroelectric equipment. It is often used by government agencies to control the spread of invasive, noxious, and non-native weed species and prevent them from crowding out native species, and also to control many poisonous weeds such as poison ivy and poison oak.
1128:, "The toxicity of 2,4-D depends on its chemical forms, including salts, esters, and an acid form. 2,4-D generally has low toxicity for humans, except certain acid and salt forms can cause eye irritation. Swimming is restricted for 24 hours after application of certain 2,4-D products applied to control aquatic weeds to avoid eye irritation." As of 2005 the 1330:(APVMA) banned selected 2,4-D high volatile ester (HVE) products due to their environmental hazards. HVE 2,4-D products had already been banned in Europe and North America for 20 years; low volatile ester products continue to be available in Australia and worldwide. In July 2013 APVMA published their report findings. 1188:
cause cancer in humans, although not all of the panelists believed the possibility was equally likely: one thought the possibility was strong, leaning toward probable, and five thought the possibility was remote, leaning toward unlikely. Two panelists believed it unlikely that 2,4-D can cause cancer in humans.
1262:, and ring opening. The ethyl hexyl form of the compound is rapidly hydrolyzed in soil and water to form the 2,4-D acid. 2,4-D has a low binding affinity in mineral soils and sediment, and in those conditions is considered intermediately to highly mobile, and therefore likely to leach if not degraded. 1187:
A 1995 panel of 13 scientists reviewing studies on the carcinogenicity of 2,4-D had divided opinions. None of the scientists thought the weight of the evidence indicated that 2,4-D was a "known" or "probable" cause of human cancer. The predominant opinion indicated that it is possible that 2,4-D can
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In domestic lawn and garden maintenance, 2,4-D is commonly used. In forestry, it is used for stump treatment, trunk injection, and selective control of brush in conifer forests. Along roadways, railways, and power lines, it is used to control weeds and brush which might interfere with safe operation
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to revoke all tolerances and to cancel all registrations of 2,4-D. EPA stated that new study and EPA's comprehensive review confirmed EPA's previous finding that the 2,4-D tolerances are safe at anticipated exposure. The estimated annual use of 2,4-D in US agriculture is mapped by the US Geological
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In aerobic aquatic environments, the half life is 15 days. In anaerobic aquatic environments 2,4-D is more persistent, with a half life of 41 to 333 days. 2,4-D has been detected in streams and shallow groundwater at low concentrations, in both rural and urban areas. Breakdown is pH dependent. Some
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in the world, having been commercially available since 1945, and is now produced by many chemical companies since the patent on it has long since expired. It can be found in numerous commercial lawn herbicide mixtures, and is widely used as a weedkiller on cereal crops, pastures, and orchards. Over
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were looking for a chemical to starve Nazi Germany and Japan into submission by killing their potato and rice crops, but 2,4-D was found to be ineffective for that purpose, because both crops tolerate it. Within a year after the war ended, 2,4-D was commercially released as an herbicide to control
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A variety of sectors use products containing 2,4-D to kill weeds and unwanted vegetation. In agriculture, it was the first herbicide for selective killing of weeds but not crops. It has been used since 1945 to control broad-leafed weeds in pastures, orchards, and cereal crops such as corn, oats,
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The first publication of 2,4-D's use as a selective herbicide came in 1944. The ability of 2,4-D to control broadleaf weeds in turf was documented soon thereafter, in 1944. Starting in 1945, the American Chemical Paint Company brought 2,4-D to market as an herbicide called "Weedone". It
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degradation were demonstrated. This was accomplished using the technique of DNA-based stable isotope probing, which enables a microbial function (activity), such as degrading a chemical, to be linked with the organism's identity without the need to culture the organism involved.
1269:"The ester forms of 2,4-D can be highly toxic to fish and other aquatic life. 2,4-D generally has moderate toxicity to birds and mammals, is slightly toxic to fish and aquatic invertebrates, and is practically nontoxic to honeybees" per EPA. 1253:
2,4-D amine salts and esters are not persistent under most environmental conditions. The degradation of 2,4-D is rapid (half life of 6.2 days) in aerobic mineral soils. 2,4-D is broken down by microbes in soil, in processes that involve
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A number of 2,4-D-degrading bacteria have been isolated and characterized from a variety of environmental habitats. Metabolic pathways for the compound's degradation have been available for many years, and genes encoding 2,4-D
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in a generic version of 2,4-D, one of Australia's most widely used herbicides. Samples imported from China had "one of the highest dioxin readings for 2,4-D in the last 10 to 20 years, and could pose potential health risks."
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When radioactively labeled 2,4-D was fed to livestock, 90% or more of the total radioactive residue (TRR) was shed in urine unchanged or as conjugated forms of 2,4-D. A relatively small portion of 2,4-D was metabolized into
2195: 841:, was used at high concentrations, it could stop plant growth. In 1940, he published his finding that IAA killed broadleaf plants within a cereal field. MCPA was discovered at about that time by his ICI group. 2933:
Cavalca, L., A. Hartmann, N. Rouard, and G. Soulas. 1999. Diversity of tfdC genes: distribution and polymorphism among 2,4-dichlorophenoxyacetic acid degrading soil bacteria. FEMS Microbiology Ecology 29:
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Petitions to Revoke Tolerances; Denials: Natural Resources Defense Council, 2,4-dichlorophenoxyacetic acid (2-4D) Document ID: EPA-HQ-OPP-2008-0877-0446 Document Type: Rule Docket ID: EPA-HQ-OPP-2008-0877
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Loomis D, Guyton K, Grosse Y, El Ghissasi F, Bouvard V, Benbrahim-Tallaa L, Guha N, Mattock H, Straif K (August 2015). "Carcinogenicity of lindane, DDT, and 2,4-dichlorophenoxyacetic acid".
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Wright TR, Shan G, Walsh TA, Lira JM, Cui C, Song P, Zhuang M, Arnold NL, Lin G, Yau K, Russell SM, Cicchillo RM, Peterson MA, Simpson DM, Zhou N, Ponsamuel J, Zhang Z (23 November 2010).
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broadleaf weeds in grain crops such as rice and wheat, and in the 1950s it was registered in the United States to control size and enhance skin color in potatoes without affecting yields.
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Templeman WG, Marmoy CJ (November 1940). "The effect upon the growth of plants of watering with solutions of plant-growth substances and of seed dressings containing these materials".
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to join the ICI effort. The first scientific publication describing the 2,4-D structure and plant growth regulating activity was by Percy W. Zimmerman and Albert E. Hitchcock at the
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Islam F, Wang J, Farooq MA, Khan MS, Xu L, Zhu J, Zhao M, Muños S, Li QX, Zhou W (2018). "Potential impact of the herbicide 2,4-dichlorophenoxyacetic acid on human and ecosystems".
2307:"Biomonitoring data for 2,4-dichlorophenoxyacetic acid in the United States and Canada: interpretation in a public health risk assessment context using Biomonitoring Equivalents" 818:. All four groups were subject to wartime secrecy laws and did not follow the usual procedures of publication and patent disclosure. In December 1942, following a meeting at the 1904:
EPA Announces Final Decision to Register Enlist Duo, Herbicide Containing 2, 4-D and Glyphosate/Risk assessment ensures protection of human health, including infants, children
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2,4-D was first reported in 1944 by Franklin D-Jones at the C. B. Dolge Company in Connecticut. The biological activity of 2,4-D as well as the similar hormone herbicides
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since at least 1962. 2,4-D is used in plant cell cultures as a dedifferentiation (callus induction) hormone. It is classified as an auxin plant hormone derivative.
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of the plant. Uncontrolled, unsustainable growth ensues, causing stem curl-over, leaf withering, and eventual plant death. 2,4-D is typically applied as an
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Cupples A.M., Sims G.K. (2007). "Identification of In Situ 2,4-Dichlorophenoxyacetic Acid-Degrading Soil Microorganisms using DNA-Stable Isotope Probing".
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in IARC monographs on the evaluation of carcinogenic risks to humans: An updating of IARC Monographs volumes 1 to 42. Supplement 7, WHO, Lyon, France 1987.
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Zimmerman PW, Hitchcock AE (1942). "Substituted phenoxy and benzoic acid growth substances and the relation of structure to physiological activity".
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Murashige, T. and F. Skoog. A revised medium for rapid growth and bioassays with tobaccotissue cultures. Physiol. Plantarum 1962. 15:473-97. in:
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by four groups working independently under wartime secrecy in the United Kingdom and the United States: William G. Templeman and associates at
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A 2010 monitoring study conducted in the US and Canada found that "current exposures to 2,4-D are below applicable exposure guidance values."
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in the UK; Franklin D. Jones and associates at the American Chemical Paint Company; and Ezra Kraus, John W. Mitchell, and associates at the
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that induces uncontrolled growth and eventually death in susceptible plants. It is absorbed through the leaves and is translocated to the
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also approved Dow's maize and soybeans, and in October, the EPA registered the "Enlist Duo" herbicide containing 2,4-D and glyphosate.
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grass crops. At a time when labor was scarce and the need for increased food production was large, it literally "replaced the hoe".
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Hamner CL, Tukey HB (1944). "The Herbicidal Action of 2,4 Dichlorophenoxyacetic and 2,4,5 Trichlorophenoxyacetic Acid on Bindweed".
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on environmental behavior, physiology, and genetics, 2,4-D was the first herbicide for which the bacteria actively responsible for
3147: 2887:"Combined Toxicity of 2,4-Dichlorophenoxyacetic Acid and Its Metabolites 2,4-Dichlorophenol (2,4-DCP) on Two Nontarget Organisms" 1955: 830:, who were not the original inventors. The precise sequence of early 2,4-D discovery events and publications has been discussed. 815: 2135: 1242:(5% of the TRR in milk; 7.3% of the TRR in eggs and 4% of the TRR in chicken liver). Residue levels in kidney were the highest. 3236: 2413: 2220: 1749: 1184:
On August 8, 2007, the EPA issued a ruling that existing data do not support a link between human cancer and 2,4-D exposure.
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Quote: "The E.P.A. has reviewed the safety of 2,4-D several times, particularly with regard to an increased risk of cancer."
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Roberts DM, Buckley NA (2007). Roberts DM (ed.). "Urinary alkalinisation for acute chlorophenoxy herbicide poisoning".
2249:"Review of the existing maximum residue levels (MRLs) for 2,4-D according to Article 12 of Regulation (EC) No 396/2005" 1635: 2280: 1250:
Owing to the longevity and extent of use, 2,4-D has been evaluated several times by regulators and review committees.
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Radajewski S., Ineson P., Parekh N.R., Murrell J.C. (2000). "Stable-isotope probing as a tool in microbial ecology".
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Utility of Aryloxyalkanoate Dioxygenase Transgenes for Development of New Herbicide Resistant Crop Technologies
2762: 1523: 1305: 3337:"Robust crop resistance to broadleaf and grass herbicides provided by aryloxyalkanoate dioxygenase transgenes" 848:, a metabolically and environmentally more stable compound, led to 2,4-dichlorophenoxyacetic acid (2,4-D) and 857: 4481: 4461: 3176: 1343: 1103: 803: 781: 523: 256: 199: 3257: 1996: 4456: 970: 277: 161: 876:
revolutionized weed control, as it was the first compound that, at low doses, could selectively control
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and soybeans resistant to 2,4-D and glyphosate have been approved in Canada. In September 2014, the
4385: 3729: 3525: 1930:"Enlist weed control system in Canada. A new tool for managing hard to control and resistant weeds" 827: 294: 2550:
Loomis D (June 22, 2015). "Carcinogenicity of lindane, DDT, and 2,4-dichlorophenoxyacetic acid".
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Suwa Y., Wright A.D., Fukimori F., Nummy K.A., Hausinger R.P., Holben W.E., Forney L.J. (1996).
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Aylward LL, Morgan MK, Arbuckle TE, Barr DB, Burns CJ, Alexander BH, Hays SM (February 2010).
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Mitchell JW, Davis FF and Marth PC (1944) Turf and weed control with plant growth regulators.
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ISB News Report,3 pages, May 2011, Research & Development, Dow AgroSciences, Indianapolis
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Troyer J (2001). "In the beginning: the multiple discovery of the first hormone herbicides".
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and an agent that reduces drift; the choline salt form of 2,4-D is less volatile than 2,4-D.
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version of 2,4-D (2,4-D choline) that Dow included in its "Enlist Duo" herbicide along with
48: 3348: 3037: 2957: 2665:"EPA: Federal Register: 2,4-D, 2,4-DP, and 2,4-DB; Decision Not to Initiate Special Review" 2093:"Insight into the mode of action of 2,4-dichlorophenoxyacetic acid (2,4-D) as an herbicide" 2024:"Insight into the mode of action of 2,4-dichlorophenoxyacetic acid (2,4-D) as an herbicide" 1774: 1339: 834: 265: 61: 181: 8: 4365: 4330: 3724: 3518: 2480: 1701:"Influence of growth regulators on skin colour and scab diseases of red-skinned potatoes" 1191:
In a prior 1987 report the IARC classified some chlorphenoxy herbicides including 2,4-D,
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Ibrahim MA, Bond, GG, Burke, TA, Cole, P, Dost, FN, Enterline, PE, et al. (1991).
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made resistant to 2,4-D by insertion of a bacterial aryloxyalkanoate dioxygenase gene,
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Quastel JH (1950). "2,4-Dichlorophenoxyacetic Acid (2,4-D) as a Selective Herbicide".
1116:; the risk depends on the amount and duration of exposure and other personal factors. 3840: 3376: 3053: 2983: 2916: 2851: 2800: 2716: 2627: 2567: 2513: 2409: 2386: 2336: 2132: 2114: 2045: 1790: 1745: 1631: 1519: 1383: 954: 950: 908: 853: 823: 642: 2969: 2073:. University of Georgia Center for Invasive Species and Ecosystem Health. April 2001 1975: 1579: 3366: 3356: 3184: 3100: 3065: 3045: 3010: 2973: 2965: 2906: 2898: 2841: 2831: 2792: 2763:"Four Corners investigation finds dangerous dioxins in widely used herbicide 2,4-D" 2706: 2698: 2619: 2559: 2509: 2505: 2376: 2368: 2326: 2318: 2260: 2104: 2035: 1782: 1737: 1712: 1656: 1602: 1567: 1489: 1016: 985: 934: 927: 704: 700: 444: 371: 3014: 4042: 3504: 3493:"Review of 2,4-dichlorophenoxyacetic acid (2,4-D) biomonitoring and epidemiology" 2796: 2652: 2487: 2139: 1962: 1913: 1875:. United States Environmental Protection Agency (EPA). 2014-09-22. Archived from 1786: 1627: 1259: 745: 245: 1860: 1086:
2,4-D has been used in laboratories for plant research as a supplement in plant
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Proceedings of the National Academy of Sciences of the United States of America
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E.P.A. Denies an Environmental Group’s Request to Ban a Widely Used Weed Killer
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of IAA. Robert Pokorny, an industrial chemist for the C.B. Dolge Company in
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has been used in acute poisoning, but evidence to support its use is poor.
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have been identified for several organisms. As a result of the extensive
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Men who work with 2,4-D are at risk for abnormally shaped sperm and thus
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Pokorny R (June 1941). "New Compounds. Some Chlorophenoxyacetic Acids".
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as a group as class 2B carcinogens - "possibly carcinogenic to humans".
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InChI=1S/C8H6Cl2O3/c9-5-1-2-7(6(10)3-5)13-4-8(11)12/h1-3H,4H2,(H,11,12)
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Mark A. Peterson, Guomin Shan, Terence A. Walsh, and Terry R. Wright.
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confirmed its 1987 classification of 2,4-D as a possible carcinogen.
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InChI=1/C8H6Cl2O3/c9-5-1-2-7(6(10)3-5)13-4-8(11)12/h1-3H,4H2,(H,11,12)
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Review of the literature by Dow scientists Crit Rev Toxicol. Oct 2012
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2,4-D was not used as a chemical warfare agents during the war. The
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the Rothamsted and ICI workers pooled resources and Nutman moved to
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2,4-D is one of the oldest and most widely available herbicides and
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Except where otherwise noted, data are given for materials in their
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Pokorny R (1941). "New Compounds. Some Chlorophenoxyacetic Acids".
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In the USA, a similar search for an acid with a longer half life,
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WHO unit finds 2,4-D herbicide 'possibly' causes cancer in humans
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were first set in the EU in 2002 and re-evaluated in 2011 by the
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In 2012, EPA denied the petition filed November 6, 2008, by the
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1,500 herbicide products contain 2,4-D as an active ingredient.
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Dow AgroSciences Names Its Newest Herbicide Offering Enlist Duo
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Jealott's Hill: Fifty years of Agricultural Research 1928-1978
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2,4-D has been linked to lymphoma and bladder cancer in dogs.
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ester forms are highly toxic to fish and other aquatic life.
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determined in acute toxicity rat studies was 639 mg/kg.
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The Effects of Workplace Hazards on Male Reproductive Health
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EPA Chemical Summary: 2,4-Dichlorophenoxyacetic Acid (2,4-D)
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10.1614/0043-1745(2001)049[0290:ITBTMD]2.0.CO;2
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Australian Pesticides and Veterinary Medicines Authority
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Andrew Pollack for the New York Times. April 9, 2012
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National Institute for Occupational Safety and Health
2817: 2218: 1518:. Imperial Chemical Industries Ltd. pp. 35–41. 806:(ICI) in the UK; Philip S. Nutman and associates at 3334: 2782: 1974:International Programme on Chemical Safety (1984). 1898: 1896: 1894: 1677:. University of California at Davis. Archived from 2586:"IARC Monographs evaluate DDT, lindane, and 2,4-D" 1630:. Wiley-Blackwell; 2nd edition (October 25, 2010) 1538: 1048:that kills many terrestrial and aquatic broadleaf 499: 4443: 3213: 2477:US EPA 2,4-D Reregistration Eligibility Decision 2247:European Food Safety Authority (November 2011). 1954:Josh Flint for Prairie Farmer. August 31, 2011 1891: 438:160 °C (320 °F; 433 K) 0.4 mm Hg 244: 3101:"Ministry of the Environment | Ontario.ca" 1873:"Ingredients Used in Pesticide Products: 2,4-D" 1592: 1379:Genetically modified crops#Herbicide resistance 907:, an herbicide that was widely used during the 96: 3501:Pesticides Properties database entry for 2,4-D 2748:"Canine Cancers Linked to Lawn Care Chemicals" 2657: 2499: 2445:"Ingredients Used in Pesticide Products 2,4-D" 3526: 2761:Four Corners By Janine Cohen (22 July 2013). 2472: 2470: 2439: 2437: 2172: 1333: 1160:United States Environmental Protection Agency 3540: 3479:CDC - NIOSH Pocket Guide to Chemical Hazards 3392: 3390: 3258:"U.S. court upholds Enlist Duo registration" 2354: 2221:"Estimated Agricultural Use for 2,4-D, 2019" 428:140.5 °C (284.9 °F; 413.6 K) 3398:GM Approval Database Genes List, Gene: aad1 3155:Docket ID: EPA-HQ-OPP-2008-0877 Agency: EPA 2678: 1764: 1179:International Agency for Research on Cancer 1164:International Agency for Research on Cancer 1152:International Agency for Research on Cancer 3533: 3519: 3416: 2867: 2865: 2467: 2434: 1354:crops due to the increasing prevalence of 297: 202: 180: 3387: 3370: 3360: 2977: 2910: 2884: 2845: 2835: 2745: 2710: 2380: 2330: 2264: 2108: 2039: 1923: 1921: 1907:EPA Documents: Registration of Enlist Duo 1716: 1245: 1071:Estimated use of 2,4-D in the USA to 2019 748:by causing uncontrolled growth, but most 264: 2644:Carey Gillam for Reuters. June 22, 2015 2056: 1976:"2,4-Dichlorophenoxyacetic Acid (2,4-D)" 1822: 1820: 1649:Journal of the American Chemical Society 1482:Journal of the American Chemical Society 1409:NIOSH Pocket Guide to Chemical Hazards. 1066: 1025: 990: 3422: 3169: 3120: 2862: 2242: 2240: 2238: 2236: 1855: 1853: 1851: 1849: 1847: 1845: 1830:. National Pesticide Information Center 1731: 1698: 1646: 1622: 1620: 1618: 1616: 1479: 1319:In October 2014, the US EPA registered 1216:investigation found elevated levels of 1044:2,4-D is primarily used as a selective 995:Containers of 2-4 D herbicide, ca. 1947 816:United States Department of Agriculture 293: 14: 4444: 3484:Overview of the toxic effects of 2,4-D 2950:Applied and Environmental Microbiology 2549: 2543: 2408:. Germany: Springer. pp. 17, 18. 2403: 2177:. University of California at Berkeley 2153:"Herbicides – 2,4-D & Its Cousins" 2064:"Weed Control Methods Handbook: 2,4-D" 1927: 1918: 1859:National Pesticide Information Center 1557: 1505: 1503: 1467:"Compendium of Pesticide Common Names" 1404: 1402: 1400: 1398: 1272: 1030:Effect of 2-4-D foliar application on 193: 3514: 3442: 2173:Harvey W, Robblns W (February 1947). 1817: 1509: 864:, published their synthesis in 1941. 325:Key: OVSKIKFHRZPJSS-UHFFFAOYSA-N 160: 140: 3448: 3234: 2233: 2097:Journal of Integrative Plant Biology 2090: 2028:Journal of Integrative Plant Biology 2021: 2015: 2003:. Montana State University Extension 1967: 1902:EPA Press Release. October 15, 2014 1842: 1613: 1443: 2530: 2219:US Geological Survey (2021-10-12). 1500: 1395: 1258:, cleavage of the acid side-chain, 903:2,4-D is one of the ingredients in 884: — narrowleaf crops, such as 730:. It is usually referred to by its 335:Key: OVSKIKFHRZPJSS-UHFFFAOYAM 235: 219: 24: 3473:External links and further reading 3309:. APVMA. July 2013. Archived from 3114: 2885:Ju Z, Liu SS, Xu YQ, Li K (2019). 2734:Chlorphenoxy Herbicides (Group 2B) 2355:Sharp WR, Gunckel JE (July 1969). 2150: 1626:Andrew H. Cobb, John P. H. Reade. 1607:10.1111/j.1744-7348.1940.tb07517.x 833:William Templeman found that when 25: 4493: 2451:. EPA. 2014-09-22. Archived from 2311:Environmental Health Perspectives 1705:Canadian Journal of Plant Science 1541:Contrib. Boyce Thompson Institute 1512:"Chapter 5: Selective herbicides" 1313:Natural Resources Defense Council 1119: 1097: 999: 880:(broadleaf plants), but not most 850:2,4,5-trichlorophenoxyacetic acid 3260:. AGCanada.com. January 29, 2016 2533:"2,4-Dichlorophenoxyacetic acid" 2131:EPA Last revised March 30, 2007 917:2,3,7,8-tetrachlorodibenzodioxin 483: 478: 389: 383: 66:(2,4-Dichlorophenoxy)acetic acid 47: 38: 3403: 3328: 3296: 3271: 3250: 3228: 3207: 3093: 3072: 3021: 2994: 2970:10.1128/AEM.62.7.2464-2469.1996 2937: 2927: 2878: 2811: 2776: 2754: 2739: 2727: 2638: 2603: 2578: 2524: 2493: 2422: 2397: 2347: 2298: 2273: 2212: 2188: 2166: 2144: 2125: 2084: 1989: 1948: 1865: 1861:NPIC 2,4-D Technical Fact Sheet 1801: 1758: 1725: 1692: 1667: 1640: 1628:Herbicides and Plant Physiology 1238:(6.9% of the TRR in milk), and 1205: 1154:classifies 2,4-D as a possible 1126:Environmental Protection Agency 1039: 681:(at 25 °C , 100 kPa). 33:2,4-Dichlorophenoxyacetic acid 3082:. Mddep.gouv.qc.ca. 2005-04-03 2510:10.1002/14651858.CD005488.pub2 1734:Agricultural Control Chemicals 1699:Waterer D (1 September 2010). 1586: 1551: 1532: 1473: 1459: 1421: 1342:published that it had created 1306:European Food Safety Authority 1145: 961:, which is itself produced by 944: 697:2,4-Dichlorophenoxyacetic acid 395: 377: 13: 1: 3015:10.1016/j.soilbio.2006.07.011 3003:Soil Biology and Biochemistry 2818:von Stackelberg K. A (2013). 2746:Harveston K (13 March 2019). 2624:10.1016/S1470-2045(15)00081-9 2564:10.1016/s1470-2045(15)00081-9 2155:. Wessels Living History Farm 1510:Allen H, et al. (1978). 1389: 1344:genetically modified soybeans 1296: 1224: 837:(IAA), a naturally-occurring 598:(US health exposure limits): 3449:Keim B (25 September 2014). 3423:Pollack A (April 25, 2012). 3279:"APVMA 2,4-D Review webpage" 2797:10.1016/j.envint.2017.10.020 1787:10.1126/science.100.2590.154 1104:Health effects of pesticides 951:phenoxy family of herbicides 804:Imperial Chemical Industries 782:List of multiple discoveries 7: 3396:ISAAA GM Approval Database 3235:Vogt W (January 26, 2016). 2428:NIOSH. Updated June 2014. 2138:September 10, 2015, at the 1372: 764:are relatively unaffected. 561:or concentration (LD, LC): 10: 4498: 3121:McKenna B (May 27, 2011). 2502:Cochrane Database Syst Rev 2196:"Fall Weed Control - FAQs" 1932:. AG Annex. Archived from 1828:"2,4-D General Fact Sheet" 1742:10.1021/ba-1950-0001.ch045 1675:"The weed-crop connection" 1456:. Retrieved on 2022-03-17. 1363:genetically modified maize 1334:Genetically modified crops 1236:4-chlorophenoxyacetic acid 1101: 953:. It is manufactured from 779: 775: 410:221.04 g/mol 4477:IARC Group 2B carcinogens 4348: 4306: 4265:Photosystem II inhibitors 4263: 4254: 4179:Photosystem II inhibitors 4168: 4127: 4089: 4064: 4041: 3993: 3984: 3958: 3910: 3901: 3848: 3839: 3791: 3743: 3710: 3654: 3552: 2785:Environment International 2667:. Epa.gov. August 8, 2007 2481:Associated RED Fact sheet 1595:Annals of Applied Biology 1175:World Health Organization 1023:versions exist, as well. 949:2,4-D is a member of the 675: 654: 592: 579:500 mg/kg (oral, hamster) 557: 459: 454: 364: 344: 309: 80: 72: 60: 55: 46: 37: 4138:Photosystem I inhibitors 2903:10.1021/acsomega.8b02282 2537:pubchem.ncbi.nlm.nih.gov 2406:Plant Cell Biotechnology 2266:10.2903/j.efsa.2011.2431 2175:"2,4-D as a Weed Killer" 2091:Song Y (February 2014). 828:Boyce Thompson Institute 524:Precautionary statements 4472:Plant growth regulators 3362:10.1073/pnas.1013154107 3281:. APVMA. Archived from 3151:(Docket Folder Summary) 2691:Environ Health Perspect 1928:Fleury D (April 2014). 1326:On 21 August 2013, the 820:Ministry of Agriculture 794:were discovered during 584:347 mg/kg (oral, mouse) 418:white to yellow powder 3214:US Geological Survey. 1514:. In Peacock F (ed.). 1302:Maximum residue limits 1246:Environmental behavior 1140:Urinary alkalinisation 1124:According to the U.S. 1072: 1036: 996: 869:Allies of World War II 356:Clc1cc(Cl)ccc1OCC(=O)O 1070: 1029: 1004:2,4-D is a synthetic 994: 862:Westport, Connecticut 812:University of Chicago 586:699 mg/kg (oral, rat) 582:100 mg/kg (oral, dog) 2373:10.1104/pp.44.7.1073 1158:to humans while the 835:indole-3-acetic acid 62:Preferred IUPAC name 4482:Systemic herbicides 4462:Phenoxyacetic acids 4366:aminocyclopyrachlor 4331:sulfometuron methyl 3353:2010PNAS..10720240W 3042:2000Natur.403..646R 2962:1996ApEnM..62.2464S 2837:10.1155/2013/371610 2703:10.1289/ehp.9196213 2612:The Lancet Oncology 2552:The Lancet Oncology 2323:10.1289/ehp.0900970 1779:1944Sci...100..154H 1661:10.1021/ja01851a601 1494:10.1021/ja01851a601 1273:Microbial breakdown 1234:, dichloroanisole, 1108:Pesticide poisoning 971:tetrachlorodibenzo- 808:Rothamsted Research 740:. It is a systemic 445:Solubility in water 34: 4457:Auxinic herbicides 4326:metsulfuron-methyl 3995:Nitrophenyl ethers 3487:Sierra Club Canada 3429:The New York Times 3127:The Globe and Mail 2651:2015-06-23 at the 2486:2008-05-17 at the 2110:10.1111/jipb.12131 2041:10.1111/jipb.12131 1961:2014-05-04 at the 1912:2017-08-04 at the 1361:As of April 2014, 1358:-resistant weeds. 1240:2,4-dichlorophenol 1130:median lethal dose 1114:fertility problems 1073: 1037: 1019:, but more potent 997: 959:2,4-dichlorophenol 854:phenoxy herbicides 800:multiple discovery 685:Infobox references 655:Related compounds 633:(Immediate danger) 32: 4439: 4438: 4344: 4343: 4250: 4249: 4164: 4163: 4085: 4084: 3986:Protox inhibitors 3980: 3979: 3976: 3975: 3903:ACCase inhibitors 3036:(6770): 646–649. 2415:978-0-387-56947-5 2404:Endreb R (1994). 1773:(2590): 154–155. 1751:978-0-8412-2442-1 1718:10.4141/CJPS10055 1450:Sigma-Aldrich Co. 1384:Genetic pollution 1173:In June 2015 the 955:chloroacetic acid 909:Malayan Emergency 693:Chemical compound 691: 690: 661:Related compounds 643:Safety data sheet 494:Hazard statements 278:CompTox Dashboard 122:Interactive image 16:(Redirected from 4489: 4261: 4260: 4175: 4174: 4134: 4133: 4043:Pyrimidinediones 3991: 3990: 3908: 3907: 3846: 3845: 3793:Organophosphorus 3535: 3528: 3521: 3512: 3511: 3467: 3466: 3464: 3462: 3446: 3440: 3439: 3437: 3435: 3420: 3414: 3407: 3401: 3394: 3385: 3384: 3374: 3364: 3332: 3326: 3325: 3323: 3321: 3315: 3308: 3300: 3294: 3293: 3291: 3290: 3275: 3269: 3268: 3266: 3265: 3254: 3248: 3247: 3245: 3244: 3232: 3226: 3225: 3223: 3222: 3211: 3205: 3204: 3199: 3197: 3185:Federal Register 3181: 3173: 3167: 3166: 3164: 3162: 3152: 3144: 3138: 3137: 3135: 3133: 3118: 3112: 3111: 3109: 3108: 3097: 3091: 3090: 3088: 3087: 3076: 3070: 3069: 3050:10.1038/35001054 3025: 3019: 3018: 2998: 2992: 2991: 2981: 2956:(7): 2464–2469. 2941: 2935: 2931: 2925: 2924: 2914: 2897:(1): 1669–1677. 2882: 2876: 2869: 2860: 2859: 2849: 2839: 2815: 2809: 2808: 2780: 2774: 2773: 2771: 2770: 2758: 2752: 2751: 2743: 2737: 2731: 2725: 2724: 2714: 2682: 2676: 2675: 2673: 2672: 2661: 2655: 2642: 2636: 2635: 2607: 2601: 2600: 2598: 2596: 2590: 2582: 2576: 2575: 2547: 2541: 2540: 2528: 2522: 2521: 2497: 2491: 2474: 2465: 2464: 2462: 2460: 2441: 2432: 2426: 2420: 2419: 2401: 2395: 2394: 2384: 2361:Plant Physiology 2351: 2345: 2344: 2334: 2302: 2296: 2295: 2293: 2292: 2281:"2,4-D Benefits" 2277: 2271: 2270: 2268: 2244: 2231: 2230: 2228: 2227: 2216: 2210: 2209: 2207: 2206: 2200: 2192: 2186: 2185: 2183: 2182: 2170: 2164: 2163: 2161: 2160: 2148: 2142: 2129: 2123: 2122: 2112: 2088: 2082: 2081: 2079: 2078: 2068: 2060: 2054: 2053: 2043: 2019: 2013: 2012: 2010: 2008: 1993: 1987: 1986: 1984: 1983: 1971: 1965: 1952: 1946: 1945: 1943: 1941: 1925: 1916: 1900: 1889: 1888: 1886: 1884: 1869: 1863: 1857: 1840: 1839: 1837: 1835: 1824: 1815: 1805: 1799: 1798: 1762: 1756: 1755: 1729: 1723: 1722: 1720: 1696: 1690: 1689: 1687: 1686: 1671: 1665: 1664: 1644: 1638: 1624: 1611: 1610: 1590: 1584: 1583: 1555: 1549: 1548: 1536: 1530: 1529: 1507: 1498: 1497: 1477: 1471: 1470: 1463: 1457: 1447: 1441: 1440: 1438: 1436: 1425: 1419: 1418: 1406: 986:monochlorophenol 930:developed a new 928:Dow AgroSciences 852:(2,4,5-T), both 744:that kills most 729: 705:chemical formula 701:organic compound 543: 539: 535: 531: 517: 513: 509: 505: 501: 487: 482: 397: 391: 385: 379: 372:Chemical formula 302: 301: 286: 284: 268: 248: 237: 223: 206: 195: 184: 164: 144: 124: 100: 51: 42: 35: 31: 21: 4497: 4496: 4492: 4491: 4490: 4488: 4487: 4486: 4442: 4441: 4440: 4435: 4340: 4302: 4246: 4160: 4123: 4081: 4060: 4037: 3972: 3954: 3897: 3835: 3787: 3753:flurochloridone 3739: 3725:copper arsenate 3706: 3650: 3548: 3539: 3475: 3470: 3460: 3458: 3447: 3443: 3433: 3431: 3421: 3417: 3408: 3404: 3395: 3388: 3347:(47): 20240–5. 3333: 3329: 3319: 3317: 3313: 3306: 3302: 3301: 3297: 3288: 3286: 3277: 3276: 3272: 3263: 3261: 3256: 3255: 3251: 3242: 3240: 3233: 3229: 3220: 3218: 3212: 3208: 3195: 3193: 3179: 3175: 3174: 3170: 3160: 3158: 3150: 3146: 3145: 3141: 3131: 3129: 3119: 3115: 3106: 3104: 3103:. Ene.gov.on.ca 3099: 3098: 3094: 3085: 3083: 3078: 3077: 3073: 3026: 3022: 2999: 2995: 2942: 2938: 2932: 2928: 2883: 2879: 2870: 2863: 2816: 2812: 2781: 2777: 2768: 2766: 2759: 2755: 2744: 2740: 2732: 2728: 2683: 2679: 2670: 2668: 2663: 2662: 2658: 2653:Wayback Machine 2643: 2639: 2608: 2604: 2594: 2592: 2588: 2584: 2583: 2579: 2548: 2544: 2529: 2525: 2504:(1): CD005488. 2498: 2494: 2488:Wayback Machine 2475: 2468: 2458: 2456: 2443: 2442: 2435: 2427: 2423: 2416: 2402: 2398: 2352: 2348: 2303: 2299: 2290: 2288: 2279: 2278: 2274: 2245: 2234: 2225: 2223: 2217: 2213: 2204: 2202: 2198: 2194: 2193: 2189: 2180: 2178: 2171: 2167: 2158: 2156: 2149: 2145: 2140:Wayback Machine 2130: 2126: 2089: 2085: 2076: 2074: 2066: 2062: 2061: 2057: 2022:Song Y (2014). 2020: 2016: 2006: 2004: 2001:www.montana.edu 1995: 1994: 1990: 1981: 1979: 1978:. UNEP, WHO ILO 1972: 1968: 1963:Wayback Machine 1953: 1949: 1939: 1937: 1926: 1919: 1914:Wayback Machine 1901: 1892: 1882: 1880: 1871: 1870: 1866: 1858: 1843: 1833: 1831: 1826: 1825: 1818: 1806: 1802: 1763: 1759: 1752: 1730: 1726: 1697: 1693: 1684: 1682: 1673: 1672: 1668: 1645: 1641: 1625: 1614: 1591: 1587: 1556: 1552: 1537: 1533: 1526: 1508: 1501: 1478: 1474: 1465: 1464: 1460: 1448: 1444: 1434: 1432: 1427: 1426: 1422: 1407: 1396: 1392: 1375: 1336: 1299: 1275: 1260:decarboxylation 1248: 1227: 1208: 1148: 1135: 1122: 1110: 1100: 1042: 1002: 947: 784: 778: 746:broadleaf weeds 727: 723: 719: 715: 711: 707: 694: 687: 682: 662: 634: 621: 608: 587: 585: 583: 580: 576: 570: 526: 496: 475: 447: 400: 394: 388: 382: 374: 360: 357: 352: 351: 340: 337: 336: 333: 327: 326: 323: 317: 316: 305: 287: 280: 271: 251: 238: 226: 187: 167: 147: 127: 114: 103: 90: 76: 68: 67: 28: 23: 22: 15: 12: 11: 5: 4495: 4485: 4484: 4479: 4474: 4469: 4464: 4459: 4454: 4437: 4436: 4434: 4433: 4428: 4423: 4418: 4413: 4408: 4403: 4398: 4393: 4388: 4383: 4378: 4373: 4368: 4363: 4358: 4352: 4350: 4346: 4345: 4342: 4341: 4339: 4338: 4333: 4328: 4323: 4318: 4312: 4310: 4308:ALS inhibitors 4304: 4303: 4301: 4300: 4295: 4290: 4285: 4280: 4275: 4269: 4267: 4258: 4252: 4251: 4248: 4247: 4245: 4244: 4239: 4234: 4232:terbuthylazine 4229: 4224: 4219: 4214: 4209: 4204: 4199: 4194: 4189: 4183: 4181: 4172: 4166: 4165: 4162: 4161: 4159: 4158: 4153: 4148: 4142: 4140: 4131: 4125: 4124: 4122: 4121: 4116: 4111: 4106: 4101: 4095: 4093: 4087: 4086: 4083: 4082: 4080: 4079: 4074: 4068: 4066: 4062: 4061: 4059: 4058: 4053: 4047: 4045: 4039: 4038: 4036: 4035: 4030: 4025: 4020: 4015: 4010: 4005: 3999: 3997: 3988: 3982: 3981: 3978: 3977: 3974: 3973: 3971: 3970: 3964: 3962: 3960:DIM herbicides 3956: 3955: 3953: 3952: 3947: 3942: 3937: 3932: 3927: 3922: 3916: 3914: 3912:FOP herbicides 3905: 3899: 3898: 3896: 3895: 3890: 3885: 3880: 3875: 3870: 3865: 3860: 3854: 3852: 3843: 3837: 3836: 3834: 3833: 3828: 3823: 3818: 3813: 3808: 3803: 3797: 3795: 3789: 3788: 3786: 3785: 3780: 3775: 3770: 3765: 3760: 3755: 3749: 3747: 3745:HPPD inhbitors 3741: 3740: 3738: 3737: 3732: 3727: 3722: 3720:cacodylic acid 3716: 3714: 3708: 3707: 3705: 3704: 3699: 3694: 3689: 3684: 3679: 3674: 3669: 3663: 3661: 3652: 3651: 3649: 3648: 3643: 3638: 3633: 3628: 3623: 3618: 3613: 3608: 3603: 3598: 3593: 3588: 3583: 3578: 3573: 3568: 3562: 3560: 3550: 3549: 3538: 3537: 3530: 3523: 3515: 3509: 3508: 3502: 3496: 3490: 3481: 3474: 3471: 3469: 3468: 3441: 3415: 3402: 3386: 3327: 3316:on 6 June 2014 3295: 3270: 3249: 3239:. Farm Futures 3227: 3206: 3168: 3139: 3113: 3092: 3071: 3020: 2993: 2936: 2926: 2877: 2861: 2810: 2775: 2753: 2738: 2726: 2677: 2656: 2637: 2618:(8): 891–892. 2602: 2591:. 23 June 2015 2577: 2558:(8): 891–892. 2542: 2523: 2492: 2466: 2433: 2421: 2414: 2396: 2346: 2297: 2272: 2232: 2211: 2187: 2165: 2143: 2124: 2083: 2055: 2034:(2): 106–113. 2014: 1988: 1966: 1947: 1936:on May 3, 2014 1917: 1890: 1864: 1841: 1816: 1800: 1757: 1750: 1724: 1711:(5): 745–753. 1691: 1666: 1639: 1636:978-1405129350 1612: 1601:(4): 453–471. 1585: 1566:(2): 290–297. 1550: 1531: 1524: 1499: 1472: 1458: 1442: 1420: 1393: 1391: 1388: 1387: 1386: 1381: 1374: 1371: 1335: 1332: 1298: 1295: 1274: 1271: 1247: 1244: 1232:dichlorophenol 1226: 1223: 1207: 1204: 1162:does not. The 1147: 1144: 1133: 1121: 1120:Acute toxicity 1118: 1099: 1098:Health effects 1096: 1090:media such as 1041: 1038: 1001: 1000:Mode of action 998: 946: 943: 926:In the 2000s, 896:, and similar 882:monocotyledons 824:Jealott's Hill 777: 774: 725: 721: 717: 713: 709: 692: 689: 688: 683: 679:standard state 676: 673: 672: 663: 660: 657: 656: 652: 651: 646: 639: 638: 635: 629: 626: 625: 622: 616: 613: 612: 609: 603: 600: 599: 590: 589: 577: 568: 566: 563: 562: 555: 554: 551: 545: 544: 542:P305+P351+P338 527: 522: 519: 518: 497: 492: 489: 488: 476: 471: 468: 467: 457: 456: 452: 451: 448: 443: 440: 439: 436: 430: 429: 426: 420: 419: 416: 412: 411: 408: 402: 401: 398: 392: 386: 380: 375: 370: 367: 366: 362: 361: 359: 358: 355: 347: 346: 345: 342: 341: 339: 338: 334: 331: 330: 328: 324: 321: 320: 312: 311: 310: 307: 306: 304: 303: 290: 288: 276: 273: 272: 270: 269: 261: 259: 253: 252: 250: 249: 241: 239: 231: 228: 227: 225: 224: 216: 214: 208: 207: 197: 189: 188: 186: 185: 177: 175: 169: 168: 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4130: 4126: 4120: 4117: 4115: 4112: 4110: 4107: 4105: 4102: 4100: 4097: 4096: 4094: 4092: 4088: 4078: 4077:sulfentrazone 4075: 4073: 4072:carfentrazone 4070: 4069: 4067: 4065:Triazolinones 4063: 4057: 4054: 4052: 4049: 4048: 4046: 4044: 4040: 4034: 4031: 4029: 4026: 4024: 4021: 4019: 4016: 4014: 4011: 4009: 4006: 4004: 4001: 4000: 3998: 3996: 3992: 3989: 3987: 3983: 3969: 3966: 3965: 3963: 3961: 3957: 3951: 3948: 3946: 3943: 3941: 3938: 3936: 3933: 3931: 3928: 3926: 3923: 3921: 3918: 3917: 3915: 3913: 3909: 3906: 3904: 3900: 3894: 3891: 3889: 3886: 3884: 3881: 3879: 3876: 3874: 3871: 3869: 3866: 3864: 3861: 3859: 3856: 3855: 3853: 3851: 3847: 3844: 3842: 3838: 3832: 3829: 3827: 3824: 3822: 3819: 3817: 3814: 3812: 3809: 3807: 3804: 3802: 3799: 3798: 3796: 3794: 3790: 3784: 3781: 3779: 3776: 3774: 3771: 3769: 3766: 3764: 3763:leptospermone 3761: 3759: 3756: 3754: 3751: 3750: 3748: 3746: 3742: 3736: 3733: 3731: 3728: 3726: 3723: 3721: 3718: 3717: 3715: 3713: 3709: 3703: 3700: 3698: 3695: 3693: 3690: 3688: 3685: 3683: 3680: 3678: 3675: 3673: 3670: 3668: 3665: 3664: 3662: 3660: 3657: 3653: 3647: 3644: 3642: 3639: 3637: 3634: 3632: 3629: 3627: 3626:pendimethalin 3624: 3622: 3619: 3617: 3614: 3612: 3609: 3607: 3604: 3602: 3599: 3597: 3594: 3592: 3589: 3587: 3584: 3582: 3579: 3577: 3574: 3572: 3569: 3567: 3564: 3563: 3561: 3559: 3555: 3551: 3547: 3543: 3536: 3531: 3529: 3524: 3522: 3517: 3516: 3513: 3506: 3503: 3500: 3497: 3494: 3491: 3489:January, 2005 3488: 3485: 3482: 3480: 3477: 3476: 3456: 3452: 3445: 3430: 3426: 3419: 3412: 3406: 3399: 3393: 3391: 3382: 3378: 3373: 3368: 3363: 3358: 3354: 3350: 3346: 3342: 3338: 3331: 3312: 3305: 3299: 3285:on 2014-06-06 3284: 3280: 3274: 3259: 3253: 3238: 3231: 3217: 3210: 3203: 3196:September 12, 3191: 3187: 3186: 3178: 3172: 3161:September 12, 3156: 3149: 3143: 3128: 3124: 3117: 3102: 3096: 3081: 3075: 3067: 3063: 3059: 3055: 3051: 3047: 3043: 3039: 3035: 3031: 3024: 3016: 3012: 3008: 3004: 2997: 2989: 2985: 2980: 2975: 2971: 2967: 2963: 2959: 2955: 2951: 2947: 2940: 2930: 2922: 2918: 2913: 2908: 2904: 2900: 2896: 2892: 2888: 2881: 2874: 2868: 2866: 2857: 2853: 2848: 2843: 2838: 2833: 2829: 2825: 2821: 2814: 2806: 2802: 2798: 2794: 2790: 2786: 2779: 2764: 2757: 2749: 2742: 2735: 2730: 2722: 2718: 2713: 2708: 2704: 2700: 2696: 2692: 2688: 2681: 2666: 2660: 2654: 2650: 2647: 2641: 2633: 2629: 2625: 2621: 2617: 2613: 2606: 2587: 2581: 2573: 2569: 2565: 2561: 2557: 2553: 2546: 2538: 2534: 2527: 2519: 2515: 2511: 2507: 2503: 2496: 2489: 2485: 2482: 2478: 2473: 2471: 2455:on 2022-04-26 2454: 2450: 2446: 2440: 2438: 2431: 2425: 2417: 2411: 2407: 2400: 2392: 2388: 2383: 2378: 2374: 2370: 2367:(7): 1073–9. 2366: 2362: 2358: 2350: 2342: 2338: 2333: 2328: 2324: 2320: 2317:(2): 177–81. 2316: 2312: 2308: 2301: 2287:on 2015-11-02 2286: 2282: 2276: 2267: 2262: 2258: 2254: 2250: 2243: 2241: 2239: 2237: 2222: 2215: 2197: 2191: 2176: 2169: 2154: 2147: 2141: 2137: 2134: 2128: 2120: 2116: 2111: 2106: 2103:(2): 106–13. 2102: 2098: 2094: 2087: 2072: 2065: 2059: 2051: 2047: 2042: 2037: 2033: 2029: 2025: 2018: 2002: 1998: 1992: 1977: 1970: 1964: 1960: 1957: 1951: 1935: 1931: 1924: 1922: 1915: 1911: 1908: 1905: 1899: 1897: 1895: 1879:on 2022-04-26 1878: 1874: 1868: 1862: 1856: 1854: 1852: 1850: 1848: 1846: 1829: 1823: 1821: 1813: 1810: 1804: 1796: 1792: 1788: 1784: 1780: 1776: 1772: 1768: 1761: 1753: 1747: 1743: 1739: 1735: 1728: 1719: 1714: 1710: 1706: 1702: 1695: 1681:on 2011-12-07 1680: 1676: 1670: 1662: 1658: 1654: 1650: 1643: 1637: 1633: 1629: 1623: 1621: 1619: 1617: 1608: 1604: 1600: 1596: 1589: 1581: 1577: 1573: 1569: 1565: 1561: 1554: 1546: 1542: 1535: 1527: 1521: 1517: 1513: 1506: 1504: 1495: 1491: 1487: 1483: 1476: 1468: 1462: 1455: 1451: 1446: 1430: 1424: 1416: 1412: 1405: 1403: 1401: 1399: 1394: 1385: 1382: 1380: 1377: 1376: 1370: 1368: 1364: 1359: 1357: 1353: 1352:Roundup Ready 1349: 1345: 1341: 1331: 1329: 1324: 1322: 1317: 1314: 1309: 1307: 1303: 1294: 1291: 1290: 1285: 1281: 1270: 1267: 1263: 1261: 1257: 1256:hydroxylation 1251: 1243: 1241: 1237: 1233: 1222: 1219: 1215: 1214: 1203: 1200: 1198: 1194: 1189: 1185: 1182: 1180: 1176: 1171: 1169: 1165: 1161: 1157: 1153: 1143: 1141: 1137: 1131: 1127: 1117: 1115: 1109: 1105: 1095: 1093: 1089: 1084: 1081: 1077: 1069: 1065: 1063: 1059: 1055: 1051: 1047: 1035: 1034: 1028: 1024: 1022: 1018: 1015: 1011: 1007: 993: 989: 987: 984:, as well as 983: 982:-nitrosamines 981: 976: 974: 968: 964: 960: 956: 952: 942: 940: 936: 933: 929: 924: 922: 918: 914: 910: 906: 901: 899: 895: 891: 887: 883: 879: 873: 870: 865: 863: 859: 855: 851: 847: 842: 840: 836: 831: 829: 825: 821: 817: 813: 809: 805: 801: 797: 793: 789: 783: 773: 770: 765: 763: 759: 755: 751: 747: 743: 739: 736: 733: 706: 702: 698: 686: 680: 674: 671: 667: 664: 659: 658: 653: 650: 647: 644: 641: 640: 636: 632: 628: 627: 623: 620:(Recommended) 619: 615: 614: 610: 607:(Permissible) 606: 602: 601: 597: 596: 591: 588: 578: 574: 565: 564: 560: 556: 553:nonflammable 552: 550: 547: 546: 528: 525: 521: 520: 498: 495: 491: 490: 486: 481: 477: 474: 470: 469: 465: 463: 458: 453: 449: 446: 442: 441: 437: 435: 434:Boiling point 432: 431: 427: 425: 424:Melting point 422: 421: 417: 414: 413: 409: 407: 404: 403: 376: 373: 369: 368: 363: 354: 353: 350: 343: 329: 319: 318: 315: 308: 300: 296: 295:DTXSID0020442 292: 291: 289: 279: 275: 274: 267: 263: 262: 260: 258: 255: 254: 247: 243: 242: 240: 234: 230: 229: 222: 218: 217: 215: 213: 210: 209: 205: 201: 198: 196: 194:ECHA InfoCard 191: 190: 183: 179: 178: 176: 174: 171: 170: 163: 159: 158: 156: 154: 151: 150: 143: 139: 138: 136: 134: 131: 130: 123: 119: 118: 116: 112: 107: 106: 99: 95: 94: 92: 89: 85: 84: 79: 71: 63: 59: 54: 50: 45: 41: 36: 30: 19: 4467:Acetic acids 4452:Chloroarenes 4426:pyribenzoxim 4421:prosulfocarb 4411:metam sodium 4273:chlortoluron 4056:saflufenacil 3857: 3758:isoxaflutole 3667:aminopyralid 3631:pretilachlor 3601:dimethenamid 3596:diflufenican 3542:Pest control 3459:. Retrieved 3457:. Condé Nast 3454: 3444: 3432:. Retrieved 3428: 3418: 3405: 3344: 3340: 3330: 3318:. Retrieved 3311:the original 3298: 3287:. Retrieved 3283:the original 3273: 3262:. Retrieved 3252: 3241:. Retrieved 3230: 3219:. Retrieved 3209: 3201: 3194:. Retrieved 3189: 3183: 3171: 3159:. Retrieved 3154: 3142: 3130:. Retrieved 3126: 3116: 3105:. Retrieved 3095: 3084:. Retrieved 3074: 3033: 3029: 3023: 3006: 3002: 2996: 2953: 2949: 2939: 2929: 2894: 2890: 2880: 2827: 2823: 2813: 2788: 2784: 2778: 2767:. Retrieved 2765:. Abc.net.au 2756: 2741: 2729: 2694: 2690: 2680: 2669:. Retrieved 2659: 2640: 2615: 2611: 2605: 2593:. Retrieved 2580: 2555: 2551: 2545: 2536: 2526: 2501: 2495: 2457:. Retrieved 2453:the original 2449:www2.epa.gov 2448: 2424: 2405: 2399: 2364: 2360: 2349: 2314: 2310: 2300: 2289:. Retrieved 2285:the original 2275: 2259:(11): 2431. 2256: 2253:EFSA Journal 2252: 2224:. Retrieved 2214: 2203:. Retrieved 2190: 2179:. Retrieved 2168: 2157:. 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However, 913:Vietnam War 735:common name 670:Dichlorprop 573:median dose 559:Lethal dose 549:Flash point 415:Appearance 365:Properties 200:100.002.147 142:CHEBI:28854 4446:Categories 4416:metribuzin 4396:indaziflam 4376:bromoxynil 4336:tribenuron 4242:metamitron 4202:hexazinone 4129:Quaternary 4104:fluroxypyr 3968:sethoxydim 3950:quizalofop 3935:fenoxaprop 3831:piperophos 3826:glyphosate 3778:sethoxydim 3773:nitisinone 3768:mesotrione 3712:Arsenicals 3697:quinclorac 3677:clopyralid 3672:chloramben 3636:propachlor 3566:acetochlor 3546:herbicides 3507:on Pubchem 3289:2014-06-06 3264:2016-02-05 3243:2016-02-05 3221:2020-02-15 3107:2014-05-03 3086:2014-05-03 2830:: 371610. 2769:2014-05-03 2697:: 213–22. 2671:2014-05-03 2291:2015-11-06 2226:2021-12-27 2205:2015-11-12 2181:2015-11-12 2159:2015-11-12 2151:Ganzel B. 2077:2015-11-01 1982:2020-02-02 1883:24 October 1685:2015-11-23 1547:: 321–343. 1525:0901747017 1390:References 1356:glyphosate 1321:Enlist Duo 1297:Regulation 1280:catabolism 1225:Metabolism 1156:carcinogen 1102:See also: 1052:, but not 939:glyphosate 780:See also: 769:defoliants 760:turf, and 473:Pictograms 406:Molar mass 266:2577AQ9262 173:ChemSpider 109:3D model ( 88:CAS Number 4406:methazole 4381:clomazone 4361:aclonifen 4237:terbutryn 4217:propazine 4212:prometryn 4197:cyanazine 4170:Triazines 4146:cyperquat 4119:triclopyr 4114:thiazopyr 4099:dithiopyr 4091:Pyridines 4018:fomesafen 3945:haloxyfop 3940:fluazifop 3925:cyhalofop 3806:bialaphos 3801:bensulide 3702:quinmerac 3591:diethatyl 3586:butachlor 3434:April 25, 3320:25 August 2891:ACS Omega 2824:J Toxicol 2531:Pubchem. 2479:, 2005. 1834:7 October 1338:In 2010, 1316:Service. 1092:MS medium 1046:herbicide 1010:meristems 762:grassland 742:herbicide 703:with the 649:ICSC 0033 637:100 mg/m 464:labelling 450:900 mg/L 27:Herbicide 4371:Bentazon 4227:simetryn 4222:simazine 4207:prometon 4192:atrazine 4156:paraquat 4109:imazapyr 4028:nitrofen 4023:lactofen 3930:diclofop 3888:mecoprop 3873:fenoprop 3816:fosamine 3811:ethephon 3687:picloram 3656:Aromatic 3641:propanil 3621:oryzalin 3606:flamprop 3571:alachlor 3558:anilines 3554:Anilides 3461:13 April 3381:21059954 3058:10688198 2921:31459423 2856:23533401 2805:29203058 2649:Archived 2632:26111929 2572:26111929 2518:17253558 2484:Archived 2391:16657160 2341:20123603 2136:Archived 2119:24237670 2050:24237670 1959:Archived 1910:Archived 1795:17778584 1580:85637273 1417:(NIOSH). 1373:See also 1284:metadata 1168:Group 2B 1058:mecoprop 911:and the 892:(corn), 814:and the 752:such as 455:Hazards 4401:juglone 4391:dinoseb 4288:monuron 4283:linuron 4187:ametryn 4008:bifenox 3893:2,4,5-T 3841:Phenoxy 3682:dicamba 3372:2996712 3349:Bibcode 3180:(Order) 3132:26 June 3066:4395764 3038:Bibcode 2988:8779585 2958:Bibcode 2912:6648169 2847:3600329 2721:1820267 2712:1568222 2332:2831914 1814::34-38. 1809:Golfdom 1775:Bibcode 1767:Science 1429:"2,4-D" 1411:"#0173" 1289:in situ 1218:dioxins 1197:2,4,5-T 1062:dicamba 1054:grasses 1033:Lantana 975:-dioxin 932:choline 921:2,4,5-T 858:analogs 788:2,4,5-T 776:History 754:cereals 750:grasses 666:2,4,5-T 233:PubChem 98:94-75-7 4349:Others 4151:diquat 3863:2,4-DB 3850:Auxins 3576:asulam 3379:  3369:  3064:  3056:  3030:Nature 2986:  2979:168028 2976:  2934:45-58. 2919:  2909:  2854:  2844:  2803:  2719:  2709:  2630:  2570:  2516:  2412:  2389:  2382:396217 2379:  2339:  2329:  2117:  2048:  1940:May 3, 1793:  1748:  1634:  1578:  1522:  967:phenol 898:cereal 790:, and 699:is an 645:(SDS) 349:SMILES 221:C03664 153:ChEMBL 56:Names 4431:Ziram 4256:Ureas 3858:2,4-D 3659:acids 3505:2,4-D 3455:Wired 3314:(PDF) 3307:(PDF) 3062:S2CID 2589:(PDF) 2199:(PDF) 2067:(PDF) 1576:S2CID 1454:2,4-D 1150:The 1132:or LD 1050:weeds 1021:ester 1014:amine 1006:auxin 890:maize 886:wheat 839:auxin 738:2,4-D 595:NIOSH 314:InChI 133:ChEBI 111:JSmol 75:2,4-D 18:2,4-D 4386:DCBN 4356:3-AT 4278:DCMU 3883:MCPB 3878:MCPA 3735:MSMA 3730:DSMA 3499:PPDB 3463:2015 3436:2012 3377:PMID 3322:2016 3198:2012 3163:2012 3134:2015 3054:PMID 2984:PMID 2917:PMID 2852:PMID 2828:2013 2801:PMID 2717:PMID 2628:PMID 2597:2016 2568:PMID 2514:PMID 2461:2014 2410:ISBN 2387:PMID 2337:PMID 2115:PMID 2046:PMID 2009:2023 1942:2014 1885:2015 1836:2015 1791:PMID 1746:ISBN 1632:ISBN 1520:ISBN 1437:2015 1367:USDA 1348:aad1 1195:and 1193:MCPA 1106:and 1060:and 1017:salt 957:and 935:salt 894:rice 856:and 846:i.e. 792:MCPA 758:lawn 631:IDLH 538:P280 534:P273 530:P261 516:H412 512:H335 508:H318 504:H317 500:H302 257:UNII 246:1486 212:KEGG 182:1441 3367:PMC 3357:doi 3345:107 3046:doi 3034:403 3011:doi 2974:PMC 2966:doi 2907:PMC 2899:doi 2842:PMC 2832:doi 2793:doi 2789:111 2707:PMC 2699:doi 2620:doi 2560:doi 2506:doi 2490:EPA 2377:PMC 2369:doi 2327:PMC 2319:doi 2315:118 2261:doi 2105:doi 2036:doi 1783:doi 1771:100 1738:doi 1713:doi 1657:doi 1603:doi 1568:doi 1490:doi 1340:Dow 1177:'s 965:of 732:ISO 720:OCH 618:REL 605:PEL 462:GHS 283:EPA 236:CID 4448:: 3544:: 3453:. 3427:. 3389:^ 3375:. 3365:. 3355:. 3343:. 3339:. 3200:. 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Index

2,4-D
2,4-dichlorophenoxyacetic acid
Ball-and-stick model of 2,4-dichlorophenoxyacetic acid
Preferred IUPAC name
CAS Number
94-75-7
JSmol
Interactive image
ChEBI
CHEBI:28854
ChEMBL
ChEMBL367623
ChemSpider
1441
ECHA InfoCard
100.002.147
Edit this at Wikidata
KEGG
C03664
PubChem
1486
UNII
2577AQ9262
CompTox Dashboard
DTXSID0020442
Edit this at Wikidata
InChI
SMILES
Chemical formula
Molar mass

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