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Barium chromate

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Barium chromate has been found to be useful in many capacities. The compound is often used as a carrier for the chromium ions. One such case is the use of barium chromate as a sulfate scavenger in chromium electroplating baths. Over time the chromium concentration of the bath will decrease until the
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type nanorods. This method consisted of a modified template synthesis technique that was originally used for the synthesis of organic microtubules. Nanoparticles are allowed to grow in the pores of alumina membranes of various sizes. The varying sizes of the pores allow the growth to be controlled
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Barium has also been used to color paints. The pigment known as lemon yellow often contained barium chromate mixed with lead sulfate. Due to its moderate tinting strength lemon yellow was not employed very frequently in oil painting.
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In 2010, a study was conducted on four hexavalent chromium compounds to test the carcinogenic effects of chromium. The chromium ions accumulate in the bronchial bifurcation sites, settling into the tissue and inducing tumors. Using
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Wise, Sandra S; Holmes, Amie L; Qin,Qin; Xie, Hong; Kafsifis, Spiros P; Thompson, W Douglas; Wise, John Pierce Sr. (2010) "Comparative Genotoxicity and Cytotoxicity of Four Haxevalent Chromium Compounds in Human Bronchial Cells."
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and cause the shapes to be reproducible. The alumina is then dissolved, leaving the nanoparticles behind intact. The synthesis can be carried out at room temperature, greatly reducing the cost and constrictions on conditions.
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The hashemite crystals are not composed of pure barium chromate but instead contain some small sulfur content as well. The different crystals contain a range of sulfur impurities ranging from the more pure dark crystals,
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Kühn, H. and Curran, M., Strontium, Barium and Calcium Chromates, in Artists' Pigments. A Handbook of Their History and Characteristics, Vol. 1: Feller, R.L. (Ed.) Oxford University Press 1986, p. 205 –
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Kühn, H. and Curran, M., Strontium, Barium and Calcium Chromates, in Artists' Pigments. A Handbook of Their History and Characteristics, Vol. 1: Feller, R.L. (Ed.) Oxford University Press 1986, p. 205 –
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in honor of the Hashemite Kingdom of Jordan. The hashemite crystals range in color from light yellowish-brown to a darker greenish-brown and are usually less than 1mm in length.
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Barium chromate is an oxidizing agent, making it useful as a burn rate modifier in pyrotechnic compositions. It is especially useful in delay compositions such as delay fuses.
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Jackson, Herman R. (1993) "SOlid fumaric acid-solid barium chromate catalyst for removing impurities and residual moisture and method for its use" US Patent No. 5154726 A.
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Jones, Allen R; Meng, John; Newboy, Kenneth R. (1993) Use of barium chromate as a sulfate scavenger in chromium electroplating baths" US Patent No. 5207890 A.
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The first naturally occurring barium chromate was found in the country of Jordan. The brown crystals found perched on host rocks were named
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Mao, Yuanbing; Wong, Stanislaus S. (2004) "General, Room-Temperature Method for the Synthesis and well as Arrays of Single-Crystalline ABO
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Ruettinger, Wolfgang; Jacubinas, Richard. (2013) "Chromia Alumina Catalysts for Alkane Dehydrogenation" US Patent No. 20130072739 A1.
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bath is no longer functional. Adding barium chromate enhances the life of the bath by adding to the chromic acid concentration.
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Fountoulakis, Stavros G; Humayan, Arif; Lezzi, Robert A. (1985) "Electroplated product and method" EP Patent No. 0140564 A2.
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Espagnacq, Andre; Morand, Philippe. (1997) "Pyrotechnic composition for delay fuses" EP Patent No 0630876 B1.
618: 626: 556: 214: 143: 495: 2576: 2026: 245: 606: 490: 2042: 1254:{\displaystyle {\ce {\mathsf {{4BaCrO4}+2Ba(OH)2->{2Ba3(CrO4)2}+O_{2}{\uparrow }+2H2O{\uparrow }}}}} 566: 485: 614: 2617: 2602: 2331: 2052: 1571: 794:. It is a known oxidizing agent and produces a green flame when heated, a result of the barium ions. 650: 155: 598: 2320: 2006: 1729: 1276:
Barium chromate is used as a corrosion inhibitive pigment when zinc-alloy electroplating surfaces.
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Hauff, Phoebe L; Foord, Eugene E; Rosenblum, Sam; and Hakki, Walid. (1983) "Hashemite, Ba(Cr,S)O
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Hauff, Phoebe L; Foord, Eugene E; Rosenblum, Sam; and Hakki, Walid. (1983) "Hashemite, Ba(Cr,S)O
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Hauff, Phoebe L; Foord, Eugene E; Rosenblum, Sam; and Hakki, Walid. (1983) "Hashemite, Ba(Cr,S)O
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Barium chromate is also used in the composition of a catalyst for alkane dehydrogenation.
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Chromic acid, (BaCrO4), barium salt (1:1), barium tetraoxochromate(VI)
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Except where otherwise noted, data are given for materials in their
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as a standard, it was discovered that barium chromate is both
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Hashemite was found to be an isostructural chromate analog of
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In 2004 a method was found for making single-crystalline ABO
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InChI=1/Ba.Cr.4O/q+2;;;;2*-1/rBa.CrO4/c;2-1(3,4)5/q+2;-2
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Alternatively, it can be created by the interaction of
905: 899: 1073: 890: 790:, is a yellow sand like powder with the formula BaCrO 387:210 °C (410 °F; 483 K) (decomposes) 1253: 983: 532: 2594: 540: 528: 186: 1484:Institute for Dynamic Educational Development. 693: 662: 80: 1339:. Chromates, when pulverized and inhaled, are 666: 544: 2098: 2084: 1579: 1298:are known to have painted with lemon yellow. 864: 1364:(99th ed.). CRC Press. pp. 4–47. 1359: 1064:. The reaction releases oxygen and water. 2091: 2077: 1586: 1572: 646: 265: 146: 124: 1241: 1229: 1227: 1204: 1174: 1156: 1154: 1134: 1110: 1102: 1101: 1082: 1080: 976: 975: 952: 936: 923: 902: 894: 222: 261: 2595: 1233: 1224: 1221: 1208: 1200: 1191: 1178: 1160: 1151: 1138: 1118: 1098: 1095: 1086: 1077: 972: 969: 956: 940: 927: 919: 910: 137: 2072: 1567: 1362:CRC Handbook of Chemistry and Physics 830:, to the less pure light crystals, Ba 293:Key: QFFVPLLCYGOFPU-UHFFFAOYSA-N 1593: 1486:http://www.webexhibits.org/pigments/ 367:yellow powder, darkens upon heating 303:Key: QFFVPLLCYGOFPU-XPTLYTIWAW 177: 13: 1353: 869:It can be synthesized by reacting 689: 14: 2629: 1547: 753: 494: 489: 484: 479: 474: 31: 22: 1529: 1512: 1500: 1490: 1474: 749:(at 25 °C , 100 kPa). 1465: 1456: 1447: 1438: 1429: 1422:, a new mineral from Jordan." 1412: 1405:, a new mineral from Jordan." 1395: 1388:, a new mineral from Jordan." 1378: 1264: 1245: 1217: 965: 948: 1: 1360:John Rumble (June 18, 2018). 1346: 290:InChI=1S/Ba.Cr.4O/q+2;;;;2*-1 7: 1301: 10: 2634: 1482:Pigments through the Ages. 1480:Douma, M. curator. (2008) 797: 359:253.37 g/mol 2528: 2415: 2354: 2313: 2106: 2100:Chromates and dichromates 1601: 1330: 865:Preparation and Reactions 743: 455: 450: 433: 399:0.2775 mg/100 mL (20 °C) 332: 312: 277: 64: 54: 44: 39: 30: 21: 557:Precautionary statements 429:soluble in strong acids 1279:When mixed with solid 1255: 985: 700: 57:Barium chromate oxide, 2613:Pyrotechnic oxidizers 1526:126(46), 15245-15252. 1424:American Mineralogist 1407:American Mineralogist 1390:American Mineralogist 1292:Pierre-Auguste Renoir 1256: 986: 699: 1071: 1013:, but is soluble in 888: 682:(fire diamond) 1538:Chem. Res. Toxicol. 1335:Barium chromate is 1240: 1215: 1198: 1185: 1167: 1147: 1145: 1125: 1093: 1056:in the presence of 963: 947: 934: 917: 394:Solubility in water 18: 1251: 1228: 1203: 1173: 1168: 1155: 1133: 1105: 1081: 1062:barium chromate(V) 1052:It can react with 981: 951: 935: 922: 897: 879:potassium chromate 776:Infobox references 701: 406:Solubility product 16: 2590: 2589: 2411: 2410: 2066: 2065: 1524:J. Am. Chem. Soc. 1243: 1231: 1206: 1176: 1158: 1148: 1136: 1112: 1104: 1084: 1026:+ 2 H → 2 Ba + Cr 978: 954: 938: 925: 904: 896: 784:Chemical compound 782: 781: 732:Safety data sheet 519:Hazard statements 441:Crystal structure 246:CompTox Dashboard 106:Interactive image 2625: 2618:Oxidizing agents 2603:Barium compounds 2582: 2572: 2562: 2547: 2520: 2494: 2472: 2454: 2436: 2403: 2381: 2346: 2327: 2311: 2310: 2305: 2287: 2273: 2263: 2253: 2243: 2229: 2219: 2201: 2191: 2181: 2171: 2161: 2151: 2137: 2123: 2093: 2086: 2079: 2070: 2069: 2058: 2048: 1595:Barium compounds 1588: 1581: 1574: 1565: 1564: 1541: 1533: 1527: 1522:Type Nanorods." 1516: 1510: 1504: 1498: 1494: 1488: 1478: 1472: 1469: 1463: 1460: 1454: 1451: 1445: 1442: 1436: 1433: 1427: 1426:, 69, 1223-1225. 1416: 1410: 1409:, 69, 1223-1225. 1399: 1393: 1392:, 69, 1223-1225. 1382: 1376: 1375: 1357: 1260: 1258: 1257: 1252: 1250: 1249: 1248: 1239: 1236: 1220: 1214: 1211: 1199: 1197: 1194: 1189: 1184: 1181: 1166: 1163: 1149: 1146: 1144: 1141: 1127: 1124: 1121: 1116: 1094: 1092: 1089: 1054:barium hydroxide 1039: 990: 988: 987: 982: 980: 979: 968: 962: 959: 946: 943: 933: 930: 918: 916: 913: 908: 871:barium hydroxide 766: 760: 757: 756: 721: 714: 707: 692: 672: 668: 664: 660: 656: 652: 648: 644: 640: 636: 632: 628: 624: 620: 616: 612: 608: 604: 600: 596: 592: 588: 584: 580: 576: 572: 568: 564: 550: 546: 542: 538: 534: 530: 526: 498: 493: 488: 483: 478: 340:Chemical formula 270: 269: 254: 252: 226: 190: 179: 158: 150: 139: 128: 108: 84: 35: 26: 19: 17:Barium chromate 15: 2633: 2632: 2628: 2627: 2626: 2624: 2623: 2622: 2593: 2592: 2591: 2586: 2581: 2577: 2571: 2567: 2561: 2557: 2553: 2549: 2546: 2542: 2538: 2524: 2519: 2515: 2511: 2507: 2503: 2499: 2493: 2489: 2485: 2481: 2477: 2471: 2467: 2463: 2459: 2453: 2449: 2445: 2441: 2435: 2431: 2427: 2423: 2407: 2402: 2398: 2394: 2390: 2386: 2380: 2376: 2372: 2368: 2364: 2356:Chromate esters 2350: 2344: 2340: 2336: 2332: 2325: 2321: 2314:Chlorochromates 2309: 2304: 2300: 2296: 2292: 2286: 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1132: 1126: 1122: 1117: 1106: 1090: 1085: 1076: 1075: 1074: 1072: 1069: 1068: 1047: 1037: 1033: 1029: 1025: 1021: 1000:sodium chromate 996:barium chloride 964: 960: 955: 944: 939: 931: 926: 914: 909: 898: 893: 892: 891: 889: 886: 885: 875:barium chloride 867: 860: 849: 845: 841: 837: 833: 829: 825: 821: 817: 813: 800: 793: 788:Barium chromate 785: 778: 773: 772: 771:  ?) 762: 758: 754: 750: 726: 725: 724: 723: 716: 709: 702: 698: 690: 559: 521: 507: 471: 443: 416: 414: 396: 348: 342: 328: 325: 320: 319: 308: 305: 304: 301: 295: 294: 291: 285: 284: 273: 255: 248: 229: 209: 193: 180: 168: 131: 111: 98: 87: 74: 60: 58: 50: 49:Barium chromate 12: 11: 5: 2631: 2621: 2620: 2615: 2610: 2605: 2588: 2587: 2585: 2584: 2579: 2574: 2569: 2564: 2559: 2555: 2551: 2544: 2540: 2534: 2532: 2526: 2525: 2523: 2522: 2517: 2513: 2509: 2505: 2501: 2496: 2491: 2487: 2483: 2479: 2474: 2469: 2465: 2461: 2456: 2451: 2447: 2443: 2438: 2433: 2429: 2425: 2419: 2417: 2413: 2412: 2409: 2408: 2406: 2405: 2400: 2396: 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1344: 1342: 1338: 1328: 1326: 1322: 1318: 1317:zinc chromate 1312: 1299: 1297: 1293: 1287: 1284: 1282: 1277: 1274: 1271: 1128: 1067: 1066: 1065: 1063: 1059: 1055: 1048:= = 2.1 × 10 1044: 1041: 1020: 1019: 1018: 1016: 1012: 1008: 1003: 1001: 997: 884: 883: 882: 880: 876: 872: 862: 856: 851: 807: 805: 795: 789: 777: 770: 765: 748: 742: 739: 738:External MSDS 736: 733: 730: 729: 722: 715: 708: 684: 681: 680: 676: 675: 561: 558: 554: 553: 523: 520: 516: 515: 512: 509: 506: 502: 501: 497: 492: 487: 482: 477: 473: 470: 466: 465: 461: 459: 454: 449: 446:orthorhombic 445: 442: 438: 437: 432: 428: 426: 423: 422: 418: 411: 407: 403: 402: 398: 395: 391: 390: 386: 384: 383:Melting point 381: 380: 376: 374: 371: 370: 366: 363: 362: 358: 356: 353: 352: 344: 341: 337: 336: 331: 322: 321: 318: 311: 297: 287: 286: 283: 276: 268: 264: 263:DTXSID1051517 260: 259: 257: 247: 243: 242: 238: 236: 233: 232: 225: 221: 220: 218: 216: 213: 212: 205: 204: 202: 200: 197: 196: 189: 185: 184: 182: 176: 172: 171: 164: 163: 161: 159: 154: 153: 149: 145: 142: 140: 138:ECHA InfoCard 135: 134: 127: 123: 122: 120: 118: 115: 114: 107: 103: 102: 100: 96: 91: 90: 83: 79: 78: 76: 73: 69: 68: 63: 53: 47: 43: 38: 34: 29: 25: 20: 2529: 2195: 1762: 1558:Lemon yellow 1540:23, 365-372. 1537: 1531: 1523: 1514: 1507:Lemon yellow 1502: 1492: 1481: 1476: 1467: 1458: 1449: 1440: 1431: 1423: 1414: 1406: 1397: 1389: 1380: 1361: 1355: 1334: 1313: 1305: 1296:Claude Monet 1288: 1285: 1281:fumaric acid 1278: 1275: 1272: 1268: 1058:sodium azide 1051: 1042: 1004: 993: 868: 852: 808: 801: 787: 786: 678: 510: 457: 409: 199:RTECS number 65:Identifiers 55:Other names 2416:Dichromates 1560:, ColourLex 1509:, ColourLex 1341:carcinogens 1265:Common Uses 1005:It is very 505:Signal word 377:4.498 g/cm 364:Appearance 333:Properties 144:100.030.587 2597:Categories 1347:References 1060:to create 469:Pictograms 434:Structure 425:Solubility 419:1.17 × 10 355:Molar mass 224:7D7O9CF0IX 117:ChemSpider 93:3D model ( 82:10294-40-3 72:CAS Number 46:IUPAC name 2608:Chromates 2107:Chromates 1325:cytotoxic 1321:genotoxic 1246:↑ 1218:↑ 1007:insoluble 966:↓ 949:⟶ 804:hashemite 659:P370+P378 651:P333+P313 635:P308+P313 631:P304+P340 627:P304+P312 623:P302+P352 619:P301+P312 615:P301+P310 460:labelling 324:.()(=O)=O 235:UN number 165:233-660-5 157:EC Number 2391:(OSi(OCH 1302:Research 1129:→ 679:NFPA 704 451:Hazards 206:CQ876000 2530:Related 2478:[NH 2293:[NH 1934:Ba(SCN) 1682:Ba(ClO) 1022:2 BaCrO 798:History 769:what is 767: ( 373:Density 349: 175:PubChem 2500:[C 2369:(OC(CH 2341:NH]CrO 2333:[C 2002:BaZnGa 1896:Ba(OH) 1835:Ba(MnO 1747:Ba(CN) 1735:Ba(ClO 1718:Ba(ClO 1634:Ba(BrO 1368:  1331:Safety 857:, BaSO 855:baryte 764:verify 761:  734:(SDS) 511:Danger 317:SMILES 40:Names 2568:EuCrO 2269:PbCrO 2259:CdCrO 2249:ZnCrO 2225:NiCrO 2197:BaCrO 2187:SrCrO 2177:CaCrO 2167:MgCrO 2157:BeCrO 2054:BaSiF 2044:BaGeF 1974:BaTiO 1966:BaSnO 1958:BaRuO 1926:BaSeO 1904:Ba(PO 1871:Ba(NO 1859:Ba(NO 1827:BaMnO 1815:Ba(IO 1779:BaFeO 1763:BaCrO 1730:BaClF 1646:Ba(CH 1614:Ba(BO 1337:toxic 1083:BaCrO 1015:acids 1011:water 998:with 953:BaCrO 877:with 345:BaCrO 282:InChI 239:1564 188:25136 126:23481 95:JSmol 2322:KCrO 2211:(CrO 1994:BaWO 1950:BaSO 1942:BaSO 1921:BaSe 1847:Ba(N 1787:BaFe 1755:BaCl 1698:BaCO 1662:Ba(C 1626:BaBr 1554:207. 1497:207. 1366:ISBN 1323:and 1294:and 844:1.00 840:0.36 836:0.64 832:1.00 824:1.00 820:0.07 816:0.93 812:1.00 671:P501 667:P405 663:P391 655:P363 647:P330 643:P321 639:P312 611:P281 607:P280 603:P273 599:P272 595:P271 591:P270 587:P264 583:P261 579:P221 575:P220 571:P210 567:P202 563:P201 549:H410 545:H350 541:H332 537:H317 533:H302 529:H301 525:H272 215:UNII 2578:CrO 2543:CrO 2508:NH] 2387:CrO 2365:CrO 2301:CrO 2283:CrO 2239:CrO 2147:CrO 2133:CrO 2119:CrO 2037:7-x 2027:YBa 2013:1-x 1986:TiO 1916:BaS 1888:BaO 1883:BaO 1807:BaI 1799:BaH 1771:BaF 1706:BaC 1690:BaC 1606:BaB 1175:CrO 1135:NaN 1034:+ H 1009:in 977:KOH 937:CrO 881:. 873:or 838:, S 834:(Cr 818:, S 814:(Cr 458:GHS 251:EPA 178:CID 2599:: 2554:Cr 2512:Cr 2486:Cr 2464:Cr 2460:Ag 2446:Cr 2428:Cr 2424:Na 2345:Cl 2326:Cl 2279:Pb 2235:Ag 2207:Fe 2143:Cs 2115:Na 2031:Cu 2015:Nb 2011:Ba 2007:Sr 1982:Ba 1650:CO 1343:. 1157:Ba 1111:OH 1103:Ba 1046:sp 1017:: 903:OH 895:Ba 861:. 850:. 810:Ba 669:, 665:, 661:, 657:, 653:, 649:, 645:, 641:, 637:, 633:, 629:, 625:, 621:, 617:, 613:, 609:, 605:, 601:, 597:, 593:, 589:, 585:, 581:, 577:, 573:, 569:, 565:, 547:, 543:, 539:, 535:, 531:, 527:, 462:: 415:) 413:sp 2580:5 2570:4 2560:7 2558:O 2556:2 2552:2 2550:H 2548:/ 2545:4 2541:2 2539:H 2518:7 2516:O 2514:2 2510:2 2506:5 2504:H 2502:5 2492:7 2490:O 2488:2 2484:2 2482:] 2480:4 2470:7 2468:O 2466:2 2462:2 2452:7 2450:O 2448:2 2444:2 2442:K 2434:7 2432:O 2430:2 2426:2 2401:2 2399:) 2397:3 2395:) 2393:3 2389:2 2379:2 2377:) 2375:3 2373:) 2371:3 2367:2 2343:3 2339:5 2337:H 2335:5 2324:3 2303:4 2299:2 2297:] 2295:4 2285:5 2281:2 2271:4 2261:4 2251:4 2241:4 2237:2 2227:4 2217:3 2215:) 2213:4 2209:2 2199:4 2189:4 2179:4 2169:4 2159:4 2149:4 2145:2 2135:4 2131:2 2129:K 2121:4 2117:2 2092:e 2085:t 2078:v 2056:6 2046:6 2035:O 2033:3 2029:2 2021:6 2019:O 2017:2 2009:2 1996:4 1988:4 1984:2 1976:3 1968:3 1960:3 1952:4 1944:3 1936:2 1928:4 1910:2 1908:) 1906:3 1898:2 1890:2 1877:2 1875:) 1873:3 1865:2 1863:) 1861:2 1853:2 1851:) 1849:3 1841:2 1839:) 1837:4 1829:4 1821:2 1819:) 1817:3 1809:2 1801:2 1793:4 1791:O 1789:2 1781:4 1773:2 1765:4 1757:2 1749:2 1741:2 1739:) 1737:4 1724:2 1722:) 1720:3 1712:4 1710:O 1708:2 1700:3 1692:2 1684:2 1676:2 1674:) 1672:2 1670:O 1668:7 1666:H 1664:5 1656:2 1654:) 1652:2 1648:3 1640:2 1638:) 1636:3 1628:2 1620:2 1618:) 1616:2 1608:6 1587:e 1580:t 1573:v 1520:4 1420:4 1403:4 1386:4 1374:. 1308:4 1242:O 1234:2 1230:H 1225:2 1222:+ 1209:2 1205:O 1201:+ 1192:2 1187:) 1179:4 1171:( 1161:3 1152:2 1139:3 1119:2 1114:) 1108:( 1099:2 1096:+ 1087:4 1078:4 1043:K 1038:O 1036:2 1032:7 1030:O 1028:2 1024:4 973:2 970:+ 957:4 941:4 928:2 924:K 920:+ 911:2 906:) 900:( 859:4 848:4 846:O 842:) 828:4 826:O 822:) 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Index



IUPAC name
CAS Number
10294-40-3
JSmol
Interactive image
ChemSpider
23481
ECHA InfoCard
100.030.587
Edit this at Wikidata
EC Number
PubChem
25136
RTECS number
UNII
7D7O9CF0IX
UN number
CompTox Dashboard
DTXSID1051517
Edit this at Wikidata
InChI
SMILES
Chemical formula
Molar mass
Density
Melting point
Solubility in water
Solubility product

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