157:(tetrafluoroethane), which is widely used as a propellant and refrigerant. HFC-134a sold for those purposes is often sold at a higher price, which has led to the practice of using gas dusters as a less expensive source of HFCs for those purposes. Adapters have been built for such purposes, although in most cases, the use of such adapters will void the warranty on the equipment they are used with. One example of this practice is the case of
206:. Contrary to popular belief, the majority of the psychoactive effects of these inhalants is not a result of oxygen deprivation. The euphoric feeling produced stems from cellular mechanisms that are dependent on the molecular structure of the specific inhalant, as is the case with all psychoactive drugs. Their exact mechanisms of action have not been well elucidated, but it is hypothesized that they have much in common with that of
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Gas duster can be used for cleaning dust off surfaces such as keyboards, as well as sensitive electronics in which moisture is not desired. When using gas duster, it is recommended to not hold the can upside down, as this can result in spraying liquid on to the surface. The liquid, when released from
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Single-unit, i.e. unitary, hand-held apparatus comprising a container and a discharge nozzle attached thereto, in which flow of liquid or other fluent material is produced by the muscular energy of the operator at the moment of use or by an equivalent manipulator independent from the apparatus the
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True "air dusters" using ordinary air are also available in the market. These typically have much shorter run times than a chemical duster, but are easily refillable. Both hand pump and electric compressor models have been marketed. The maximum pressure for an aerosol can is typically 10 bar (145
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Recently electronic versions which only use air have become viable alternatives that are preferred by many large corporations due to the fact that they contain no hazardous chemicals, are safe for the environment, do not freeze and cannot be abused. Another mechanical alternative is a camera air
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spray being effected by a gas or vapour flow from a source where the gas or vapour is not in contact with the liquid or other fluent material to be sprayed, e.g. from a compressible bulb, an air pump or an enclosure surrounding the container designed for spraying particulate material.
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This type of product is most often packaged as a can that, when a trigger is pressed, blasts a stream of compressed gas through a nozzle at the top. Despite the names "canned air" or "compressed air", the cans do not actually contain
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or banning the sale of gas dusters and other inhalants to those under 18. Because of the generic name "canned air", it is mistakenly believed that the can only contains normal air or contains a less harmful substance (such as
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The first patent for a unitary, hand-held compressed air dusting tool was filed in 1930 by E C Brown Co, listing Tappan Dewitt as the product's sole inventor. The patent application describes the product as a
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gas guns, which use HFC-134a as the compressed gas. Several vendors sell "duster adapters" for use with airsoft guns, though it is necessary to add a lubricant when using gas dusters to power
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agent to deter people from inhaling the product. Some U.S. states, as well as the UK, have made laws regarding the abuse of gas dusters, as well as other inhalants, by criminalizing
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on contact with skin, especially if the can is held upside down. Also, the can gets very cold during extended use; holding the can itself can result in cold burns.
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is not practical, as it cannot be stored in metal spray cans due to extreme pressure and temperature requirements. Common duster gases include
261:(GWP) of HFC-152a, HFC-143a, and HFC-134a are 124, 4470, and 1430, respectively. GWP refers to global warming effect in comparison to CO
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Catalytic Air
Pollution Control: Commercial Technology – Ronald M. Heck, Robert J. Farrauto, Suresh T. Gulati – Google Books
46:, is a product used for cleaning or dusting electronic equipment and other sensitive devices that cannot be cleaned using
285:) gases. For example, tetrafluoroethane has insignificant ODP. This is a separate issue from the global warming concern.
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the can, boils at a very low temperature, rapidly cooling any surface it touches. This can cause mild to moderate
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381:"What causes compressed air (from "Dust Off" cans) to freeze, but only when turned upside down?"
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302:°F). Therefore, a fully compressed air duster will exhaust air about 10 times the can volume.
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gases) but rather contain other gases that are compressible into liquids. True
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539:"Aerosol Explosion Investigation and Accident Reconstruction at CHEMAXX.COM"
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463:"Huffing (Inhalant Abuse) Symptoms, Signs, Abuse Information - MedicineNet"
337:"Huffing (Inhalant Abuse) Symptoms, Signs, Abuse Information - MedicineNet"
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can cause a plethora of negative effects including brain and nerve damage,
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for unit mass. 1 kg of HFC-152a is equivalent to 124 kg of CO
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Heck, Ronald M.; Farrauto, Robert J.; Gulati, Suresh T. (2009-02-24).
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effects and may be harmful to health, sometimes even causing death.
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19:"Air spray" redirects here. For the North American airline, see
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that can be easily abused, many manufacturers have added a
253:(HFC-134a) are potent greenhouse gases. According to the
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from the blood, which can cause the user to suffer from
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which are used because of their lower flammability.
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486:. Cambridge University Press. 2007. p. 212
194:actually used are denser than air, such as
114:When inhaled, gas duster fumes may produce
255:Intergovernmental Panel on Climate Change
249:(HFC-143a), and completely non-flammable
221:Since gas dusters are often contained in
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277:Gas dusters sold in many countries are
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173:Since gas dusters are one of the many
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149:A dust spray can often be used as a
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396:"Dust Off Death : snopes.com"
356:"US1877778A Compressed air duster"
281:safe as they use "zero ODP" (zero
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416:"Neural basis of inhalant abuse"
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413:Balster, Robert (1 June 1998).
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421:Drug and Alcohol Dependence
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153:. Many gas dusters contain
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316:List of cleaning products
283:ozone depletion potential
109:1,1,1,2-tetrafluoroethane
259:global warming potential
394:snopes (4 March 2016).
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273:Ozone layer depletion
233:Environmental impacts
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105:1,1,1-trifluoroethane
58:(i.e. do not contain
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257:(IPCC), the
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322:References
294:psi) at 20
74:liquid air
36:gas duster
216:paralysis
179:bittering
175:inhalants
144:frostbite
93:isobutane
21:Air Spray
553:Category
310:See also
306:blower.
227:volatile
155:HFC-134a
441:9716942
208:alcohol
204:hypoxia
159:airsoft
122:History
89:propane
83:, like
81:alkanes
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490:11 May
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400:snopes
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298:°C (68
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95:, and
91:, and
85:butane
484:(PDF)
279:ozone
192:gases
107:, or
99:like
48:water
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492:2017
448:2021
437:PMID
367:2020
137:Uses
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