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Chromate and dichromate

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This equilibrium does not involve a change in hydrogen ion concentration, which would predict that the equilibrium is independent of pH. The red line on the predominance diagram is not quite horizontal due to the simultaneous equilibrium with the chromate ion. The hydrogen chromate ion may be
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Subsequent leaching of this material at higher temperatures dissolves the chromates, leaving a residue of insoluble iron oxide. Normally the chromate solution is further processed to make chromium metal, but a chromate salt may be obtained directly from the liquor.
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Brito, F.; Ascanioa, J.; Mateoa, S.; Hernándeza, C.; Araujoa, L.; Gili, P.; Martín-Zarzab, P.; Domínguez, S.; Mederos, A. (1997). "Equilibria of chromate(VI) species in acid medium and ab initio studies of these species".
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of chromium (VI) compounds. Chromium (VI) compounds cause cancer of the lung. Also positive associations have been observed between exposure to chromium (VI) compounds and cancer of the nose and nasal sinuses. There is
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and the analytical concentration of chromium. The chromate ion is the predominant species in alkaline solutions, but dichromate can become the predominant ion in acidic solutions.
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Anger, Gerd; Halstenberg, Jost; Hochgeschwender, Klaus; Scherhag, Christoph; Korallus, Ulrich; Knopf, Herbert; Schmidt, Peter; Ohlinger, Manfred (2005). "Chromium Compounds".
2638: 1286:, which can occur as spectacular long red crystals, is the most commonly found chromate mineral. Rare potassium chromate minerals and related compounds are found in the 1343:. The use of chromate compounds in manufactured goods is restricted in the EU (and by market commonality the rest of the world) by EU Parliament directive on the 1344: 1789: 397: 197: 1688: 1898: 2631: 1711: 1705: 1654: 1589: 1494: 1415: 1176:, chromates and dichromates convert into trivalent chromium, Cr, salts of which typically have a distinctively different blue-green color. 3160: 2624: 1559: 362: 1169:
was used for a very long time before environmental regulations discouraged its use. When used as oxidizing agents or titrants in a
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in the presence of air. The chromium is oxidized to the hexavalent form, while the iron forms iron(III) oxide, Fe
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Nazarchuk, Evgeny V.; Siidra, Oleg I.; Charkin, Dmitry O.; Kalmykov, Stepan N.; Kotova, Elena L. (2021-02-01).
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in experimental animals for the carcinogenicity of chromium (VI) compounds. Chromium (VI) compounds are
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are only very slightly soluble in water and are thus used as pigments. The lead-containing pigment
1146: 348: 340: 145: 38: 3150: 2753: 2733: 2713: 2703: 2675: 2353: 2006: 1798: 1460: 1211:, found as brittle metallic black crystals or granules. Chromite ore is heated with a mixture of 1153:
to protect metals from corrosion and to improve paint adhesion. Chromate and dichromate salts of
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shows that chromates are weaker oxidizing agent in alkaline solution than in acid solution.
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Further condensation reactions can occur in strongly acidic solution with the formation of
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of chromium. Thus, when pCr = 2, the chromium concentration is 10 mol/L.
1287: 1184: 1150: 631:, replaces one or more oxygen atoms. In acid solution the unstable blue peroxo complex 492: 478: 71: 1536: 3144: 2825: 2795: 1464: 1340: 1328: 1166: 1139: 3085: 2479: 1581:
Toxic Substances Controls Guide: Federal Regulation of Chemicals in the Environment
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This article is about the salts of the chromium(VI) anion. For other uses, see
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value for this reaction shows that it can be ignored at pH > 4.
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is not well characterized. Reported values vary between about −0.8 and 1.6.
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it to oxidation state +3. In acid solution the aquated Cr ion is produced.
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National Pollutant Inventory - Chromium(VI) and compounds fact sheet
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Holleman, Arnold Frederik; Wiberg, Egon (2001), Wiberg, Nils (ed.),
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The dichromate ion is a somewhat weaker base than the chromate ion:
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Except where otherwise noted, data are given for materials in their
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Restriction of Hazardous Substances (RoHS) Directive (2002/95/EC)
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Industrial Minerals & Rocks: Commodities, Markets, and Uses
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In aqueous solution, chromate and dichromate anions exist in a
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In alkaline solution chromium(III) hydroxide is produced. The
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pCr is equal to the negative of the decimal logarithm of the
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shows that the position of the equilibrium depends on both
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of chromium(VI) have structures made up of tetrahedral CrO
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results in the formation of the more stable complex CrO(O
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Zeitschrift für Kristallographie - Crystalline Materials
573:, chromate and dichromate ions can be interconvertible. 1700:. Lyon: International Agency for Research on Cancer. 3076: 2963: 2902: 2861: 2654: 2596: 2446: 2407: 2341: 2133: 2108: 2075: 1932: 1891: 1875: 1826: 1805: 1008:The chromate and dichromate ions are fairly strong 844:It is also in equilibrium with the dichromate ion: 1199:The primary chromium ore is the mixed metal oxide 1763:Demonstration of chromate-dichromate equilibrium 280: 272: 1694:Volume 100C: Arsenic, Metals, Fibres, and Dusts 1145:Approximately 136,000 tonnes (150,000 tons) of 163: 155: 34:. See also for disambiguation of derived terms. 1610:Ullmann's Encyclopedia of Industrial Chemistry 2632: 1783: 1040:+ 14 H + 6 e → 2 Cr + 7 H 473:115.994 g mol and 215.988 g mol 381:dichromate: InChI=1S/2Cr.7O/q;;;;;;;2*-1 8: 1578:Worobec, Mary Devine; Hogue, Cheryl (1992). 890:protonated, with the formation of molecular 2858: 2639: 2625: 2617: 2072: 1888: 1823: 1790: 1776: 1768: 1188:Crocoite specimen from the Red Lead Mine, 59: 1603: 1601: 309: 301: 3127: 3117: 3107: 3103: 3099: 3092: 3088: 3065: 3061: 3057: 3053: 3049: 3039: 3035: 3031: 3027: 3017: 3013: 3009: 2999: 2995: 2991: 2981: 2977: 2973: 2948: 2944: 2940: 2936: 2926: 2922: 2918: 2914: 2890: 2886: 2882: 2871: 2850: 2846: 2842: 2832: 2828: 2818: 2808: 2798: 2788: 2784: 2774: 2764: 2760: 2756: 2746: 2736: 2726: 2716: 2706: 2696: 2692: 2682: 2678: 2668: 2664: 2583: 2571: 2567: 2563: 2553: 2549: 2539: 2535: 2525: 2515: 2511: 2501: 2497: 2493: 2486: 2482: 2472: 2468: 2458: 2435: 2425: 2421: 2417: 2396: 2386: 2376: 2366: 2356: 2330: 2320: 2310: 2306: 2296: 2286: 2276: 2272: 2262: 2258: 2254: 2244: 2240: 2230: 2220: 2216: 2206: 2196: 2192: 2176: 2172: 2168: 2164: 2160: 2156: 2152: 2148: 2122: 2118: 2093: 2089: 2085: 2064: 2054: 2044: 2034: 2019: 1999: 1989: 1985: 1981: 1970: 1966: 1956: 1952: 1942: 1917: 1913: 1909: 1905: 1901: 1861: 1857: 1853: 1843: 1839: 1835: 1815: 1573: 1571: 961: 948: 922: 918: 714: 701: 1391: 1368: 1278:Chromate containing minerals are rare. 580: 402: 367: 347: 339: 246: 1641:Papp, John F.; Lipin Bruce R. (2006). 647:molecule, which may be extracted into 371:chromate: InChI=1S/Cr.4O/q;;;2*-1 1294:– the only known dichromate mineral. 384:Key: SOCTUWSJJQCPFX-UHFFFAOYSA-N 374:Key: ZCDOYSPFYFSLEW-UHFFFAOYSA-N 225: 217: 7: 529:salts contain the dichromate anion, 1304:Hexavalent chromium § Toxicity 262: 513:salts contain the chromate anion, 410:dichromate: O=(=O)()O(=O)(=O) 25: 1180:Natural occurrence and production 1741:carcinogenic to humans (Group 1) 643:, is formed; it is an uncharged 597: 583: 794:The hydrogen chromate ion, HCrO 495:(at 25 °C , 100 kPa). 1114:      1046:      1004:Oxidation–reduction properties 977:      831:      1: 1537:10.1016/S0277-5387(97)00128-9 2076:Organochromium(II) compounds 1892:Organochromium(I) compounds 1827:Organochromium(0) compounds 1357:Chromate conversion coating 633:Chromium(VI) oxide peroxide 615:, giving products in which 94: 66: 3177: 3161:Transition metal oxyanions 1671:"Mines, Minerals and More" 1301: 562:and are moderately strong 36: 29: 2648:Chromates and dichromates 1584:. BNA Books. p. 13. 1483:Chemistry of the Elements 1481:; Earnshaw, Alan (1997). 1404:Chemistry of the Elements 1402:; Earnshaw, Alan (1997). 1122: = −0.13 V 489: 418: 393: 358: 138: 126: 121: 93: 65: 1618:10.1002/14356007.a07_067 1054: = 1.33 V 61:Chromate and dichromate 37:Not to be confused with 2606:Chromate and dichromate 1612:. Weinheim: Wiley-VCH. 791:units sharing corners. 405:chromate: (=O)(=O) 132:Chromate and dichromate 1449:10.1515/zkri-2020-0078 1196: 1142: 679: 112: 103: 84: 75: 1649:(7th ed.). SME. 1487:Butterworth-Heinemann 1479:Greenwood, Norman N. 1408:Butterworth-Heinemann 1400:Greenwood, Norman N. 1302:Further information: 1187: 1163:alkaline earth metals 1134: 912:for the equilibrium 674: 611:Chromates react with 128:Systematic IUPAC name 111: 102: 83: 74: 724:predominance diagram 684:chemical equilibrium 676:Predominance diagram 667:Acid–base properties 605:potassium dichromate 1737:sufficient evidence 1728:sufficient evidence 1552:Inorganic Chemistry 1377:molar concentration 1309:Hexavalent chromium 1147:hexavalent chromium 577:Chemical properties 62: 39:chromite (compound) 27:Chromium(VI) anions 1799:Chromium compounds 1730:in humans for the 1197: 1143: 680: 591:potassium chromate 499:Infobox references 113: 104: 85: 76: 60: 3138: 3137: 2959: 2958: 2614: 2613: 2109:Chromium(II, III) 2104: 2103: 1928: 1927: 1871: 1870: 1707:978-92-832-0135-9 1656:978-0-87335-233-8 1591:978-0-87179-752-0 1531:(21): 3835–3846. 1510:IUPAC SC-Database 1496:978-0-08-037941-8 1417:978-0-08-037941-8 1311:compounds can be 1213:calcium carbonate 1174:chemical reaction 986: = 1.18 613:hydrogen peroxide 507:Chemical compound 505: 504: 346:dichromate: 323:CompTox Dashboard 308:dichromate: 279:dichromate: 245:dichromate: 224:dichromate: 198:Interactive image 195:dichromate: 190:Interactive image 162:dichromate: 117: 116: 89: 88: 16:(Redirected from 3168: 3156:Oxidizing agents 3130: 3120: 3110: 3095: 3068: 3042: 3020: 3002: 2984: 2951: 2929: 2894: 2875: 2859: 2853: 2835: 2821: 2811: 2801: 2791: 2777: 2767: 2749: 2739: 2729: 2719: 2709: 2699: 2685: 2671: 2641: 2634: 2627: 2618: 2586: 2575: 2556: 2542: 2528: 2518: 2504: 2489: 2475: 2461: 2438: 2428: 2399: 2389: 2379: 2369: 2359: 2333: 2323: 2313: 2299: 2289: 2279: 2265: 2247: 2233: 2223: 2209: 2199: 2180: 2125: 2096: 2073: 2067: 2057: 2047: 2037: 2022: 2002: 1992: 1974: 1959: 1945: 1920: 1889: 1864: 1846: 1824: 1818: 1792: 1785: 1778: 1769: 1746: 1745: 1723: 1722: 1716: 1710:. Archived from 1699: 1685: 1679: 1678: 1667: 1661: 1660: 1638: 1632: 1631: 1605: 1596: 1595: 1575: 1566: 1564: 1547: 1541: 1540: 1519: 1513: 1507: 1501: 1500: 1489:. p. 1009. 1485:(2nd ed.). 1475: 1469: 1468: 1428: 1422: 1421: 1406:(2nd ed.). 1396: 1380: 1373: 1290:. Among them is 1217:sodium carbonate 1115: 1112: 1111: 1110: 1101: 1100: 1099: 1089: 1087: 1086: 1076: 1075: 1074: 1047: 1039: 1038: 1037: 1029: 1028: 1010:oxidizing agents 978: 974: 972: 971: 968: 959: 958: 955: 935: 933: 932: 929: 880: 879: 878: 870: 869: 859: 858: 857: 840: ≈ 5.9 832: 828: 827: 826: 816: 815: 814: 782: 781: 780: 772: 771: 757: 756: 755: 747: 746: 718: 712: 711: 708: 699: 698: 695: 630: 629: 628: 601: 587: 564:oxidizing agents 549: 548: 547: 539: 538: 524: 523: 522: 462: 461: 460: 452: 451: 441: 440: 439: 426:Chemical formula 351: 343: 331: 329: 313: 305: 284: 276: 264: 250: 229: 221: 200: 192: 167: 159: 95: 67: 63: 21: 3176: 3175: 3171: 3170: 3169: 3167: 3166: 3165: 3141: 3140: 3139: 3134: 3129: 3125: 3119: 3115: 3109: 3105: 3101: 3097: 3094: 3090: 3086: 3072: 3067: 3063: 3059: 3055: 3051: 3047: 3041: 3037: 3033: 3029: 3025: 3019: 3015: 3011: 3007: 3001: 2997: 2993: 2989: 2983: 2979: 2975: 2971: 2955: 2950: 2946: 2942: 2938: 2934: 2928: 2924: 2920: 2916: 2912: 2904:Chromate esters 2898: 2892: 2888: 2884: 2880: 2873: 2869: 2862:Chlorochromates 2857: 2852: 2848: 2844: 2840: 2834: 2830: 2826: 2820: 2816: 2810: 2806: 2800: 2796: 2790: 2786: 2782: 2776: 2772: 2766: 2762: 2758: 2754: 2748: 2744: 2738: 2734: 2728: 2724: 2718: 2714: 2708: 2704: 2698: 2694: 2690: 2684: 2680: 2676: 2670: 2666: 2662: 2650: 2645: 2615: 2610: 2592: 2585: 2581: 2573: 2569: 2565: 2561: 2555: 2551: 2547: 2541: 2537: 2533: 2527: 2523: 2517: 2513: 2509: 2503: 2499: 2495: 2491: 2488: 2484: 2480: 2474: 2470: 2466: 2460: 2456: 2442: 2437: 2433: 2427: 2423: 2419: 2415: 2403: 2398: 2394: 2388: 2384: 2378: 2374: 2368: 2364: 2358: 2354: 2337: 2332: 2328: 2322: 2318: 2312: 2308: 2304: 2298: 2294: 2288: 2284: 2278: 2274: 2270: 2264: 2260: 2256: 2252: 2246: 2242: 2238: 2232: 2228: 2222: 2218: 2214: 2208: 2204: 2198: 2194: 2190: 2178: 2174: 2170: 2166: 2162: 2158: 2154: 2150: 2146: 2129: 2124: 2120: 2116: 2100: 2095: 2091: 2087: 2083: 2071: 2066: 2062: 2056: 2052: 2046: 2042: 2036: 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2960: 2957: 2956: 2954: 2953: 2931: 2908: 2906: 2900: 2899: 2897: 2896: 2877: 2865: 2863: 2856: 2855: 2837: 2823: 2813: 2803: 2793: 2779: 2769: 2751: 2741: 2731: 2721: 2711: 2701: 2687: 2673: 2658: 2656: 2652: 2651: 2646: 2644: 2643: 2636: 2629: 2621: 2612: 2611: 2609: 2608: 2602: 2600: 2598:Polyatomic ion 2594: 2593: 2591: 2590: 2588:(hypothetical) 2577: 2558: 2544: 2530: 2520: 2506: 2477: 2463: 2452: 2450: 2444: 2443: 2441: 2440: 2430: 2411: 2409: 2405: 2404: 2402: 2401: 2391: 2381: 2371: 2361: 2351: 2345: 2343: 2339: 2338: 2336: 2335: 2325: 2315: 2301: 2291: 2281: 2267: 2249: 2235: 2225: 2211: 2201: 2187: 2182: 2143: 2137: 2135: 2131: 2130: 2128: 2127: 2112: 2110: 2106: 2105: 2102: 2101: 2099: 2098: 2079: 2077: 2070: 2069: 2059: 2049: 2039: 2029: 2024: 2014: 2009: 2004: 1994: 1976: 1961: 1947: 1936: 1934: 1930: 1929: 1926: 1925: 1923: 1922: 1895: 1893: 1886: 1885: 1879: 1877: 1873: 1872: 1869: 1868: 1866: 1848: 1830: 1828: 1821: 1820: 1809: 1807: 1803: 1802: 1797: 1795: 1794: 1787: 1780: 1772: 1766: 1765: 1760: 1753: 1752:External links 1750: 1748: 1747: 1706: 1680: 1675:www.mindat.org 1662: 1655: 1633: 1626: 1597: 1590: 1567: 1560: 1542: 1514: 1502: 1495: 1470: 1443:(1–2): 11–21. 1423: 1416: 1390: 1388: 1385: 1382: 1381: 1367: 1366: 1364: 1361: 1360: 1359: 1352: 1349: 1331:compounds and 1299: 1296: 1288:Atacama desert 1283: 1272: 1271: 1268: 1264: 1260: 1256: 1252: 1248: 1244: 1240: 1236: 1232: 1224: 1220: 1208: 1204: 1181: 1178: 1151:chrome plating 1128: 1125: 1124: 1123: 1119: 1108: 1096: 1083: 1071: 1056: 1055: 1051: 1041: 1034: 1025: 1005: 1002: 994: 988: 987: 983: 937: 936: 908: 899: 895: 887: 886: 882: 875: 866: 854: 842: 841: 837: 823: 811: 795: 788: 777: 768: 760:tetrachromates 752: 743: 720: 719: 668: 665: 660: 656: 651:. Addition of 640: 636: 625: 609: 608: 603: 596: 594: 589: 582: 578: 575: 544: 535: 519: 506: 503: 502: 497: 493:standard state 490: 487: 486: 481: 479:Conjugate acid 475: 474: 471: 465: 464: 457: 448: 436: 429: 424: 421: 420: 416: 415: 413: 412: 409: 407: 404: 396: 395: 394: 391: 390: 388: 387: 383: 380: 379: 377: 373: 370: 369: 361: 360: 359: 356: 355: 353: 352: 344: 335: 333: 321: 318: 317: 315: 314: 306: 297: 295: 289: 288: 286: 285: 277: 268: 266: 258: 255: 254: 252: 251: 242: 240: 234: 233: 231: 230: 222: 213: 211: 205: 204: 202: 201: 193: 184: 182: 175: 172: 171: 169: 168: 160: 151: 149: 144: 141: 140: 136: 135: 131: 130: 124: 123: 119: 118: 115: 114: 105: 91: 90: 87: 86: 77: 26: 24: 14: 13: 10: 9: 6: 4: 3: 2: 3173: 3162: 3159: 3157: 3154: 3152: 3149: 3148: 3146: 3131: 3123: 3121: 3113: 3111: 3084: 3083: 3081: 3079: 3075: 3069: 3045: 3043: 3023: 3021: 3005: 3003: 2987: 2985: 2969: 2968: 2966: 2962: 2952: 2932: 2930: 2910: 2909: 2907: 2905: 2901: 2895: 2878: 2876: 2867: 2866: 2864: 2860: 2854: 2838: 2836: 2824: 2822: 2814: 2812: 2804: 2802: 2794: 2792: 2780: 2778: 2770: 2768: 2752: 2750: 2742: 2740: 2732: 2730: 2722: 2720: 2712: 2710: 2702: 2700: 2688: 2686: 2674: 2672: 2660: 2659: 2657: 2653: 2649: 2642: 2637: 2635: 2630: 2628: 2623: 2622: 2619: 2607: 2604: 2603: 2601: 2599: 2595: 2589: 2587: 2578: 2576: 2559: 2557: 2545: 2543: 2531: 2529: 2521: 2519: 2507: 2505: 2478: 2476: 2464: 2462: 2454: 2453: 2451: 2449: 2445: 2439: 2431: 2429: 2413: 2412: 2410: 2406: 2400: 2392: 2390: 2382: 2380: 2372: 2370: 2362: 2360: 2352: 2350: 2347: 2346: 2344: 2340: 2334: 2326: 2324: 2316: 2314: 2302: 2300: 2292: 2290: 2282: 2280: 2268: 2266: 2250: 2248: 2236: 2234: 2226: 2224: 2212: 2210: 2202: 2200: 2188: 2186: 2183: 2181: 2144: 2142: 2139: 2138: 2136: 2134:Chromium(III) 2132: 2126: 2114: 2113: 2111: 2107: 2097: 2081: 2080: 2078: 2074: 2068: 2060: 2058: 2050: 2048: 2040: 2038: 2030: 2028: 2025: 2023: 2015: 2013: 2010: 2008: 2005: 2003: 1995: 1993: 1977: 1975: 1962: 1960: 1948: 1946: 1938: 1937: 1935: 1931: 1921: 1897: 1896: 1894: 1890: 1884: 1881: 1880: 1878: 1874: 1865: 1849: 1847: 1831: 1829: 1825: 1819: 1811: 1810: 1808: 1804: 1800: 1793: 1788: 1786: 1781: 1779: 1774: 1773: 1770: 1764: 1761: 1759: 1756: 1755: 1751: 1744: 1742: 1738: 1733: 1729: 1717:on 2020-03-17 1713: 1709: 1703: 1696: 1695: 1690: 1684: 1681: 1676: 1672: 1666: 1663: 1658: 1652: 1648: 1644: 1637: 1634: 1629: 1623: 1619: 1615: 1611: 1604: 1602: 1598: 1593: 1587: 1583: 1582: 1574: 1572: 1568: 1563: 1561:0-12-352651-5 1557: 1553: 1546: 1543: 1538: 1534: 1530: 1526: 1518: 1515: 1511: 1506: 1503: 1498: 1492: 1488: 1484: 1480: 1474: 1471: 1466: 1462: 1458: 1454: 1450: 1446: 1442: 1438: 1434: 1427: 1424: 1419: 1413: 1409: 1405: 1401: 1395: 1392: 1386: 1378: 1372: 1369: 1362: 1358: 1355: 1354: 1350: 1348: 1346: 1342: 1341:nasal sinuses 1338: 1334: 1330: 1329:chromium (VI) 1326: 1322: 1318: 1314: 1310: 1305: 1297: 1295: 1293: 1289: 1281: 1276: 1230: 1229: 1228: 1218: 1214: 1202: 1195: 1191: 1186: 1179: 1177: 1175: 1172: 1168: 1167:chrome yellow 1164: 1160: 1156: 1152: 1148: 1141: 1140:Chrome yellow 1137: 1133: 1126: 1118: 1065: 1064: 1063: 1061: 1050: 1019: 1018: 1017: 1015: 1011: 1003: 1001: 998: 993: 982: 945: 944: 943: 940: 915: 914: 913: 911: 907: 893: 847: 846: 845: 836: 805: 804: 803: 801: 792: 786: 761: 736: 731: 729: 725: 689: 688: 687: 685: 677: 673: 666: 664: 654: 650: 646: 634: 618: 614: 606: 600: 595: 592: 586: 581: 576: 574: 572: 569: 565: 561: 557: 553: 528: 512: 500: 494: 488: 485: 482: 480: 477: 476: 472: 470: 467: 466: 430: 427: 423: 422: 417: 408: 403: 399: 392: 378: 368: 364: 357: 350: 349:DTXSID5074004 345: 342: 341:DTXSID7065675 337: 336: 334: 324: 320: 319: 312: 307: 304: 299: 298: 296: 294: 291: 290: 283: 278: 275: 270: 269: 267: 261: 257: 256: 249: 244: 243: 241: 239: 236: 235: 228: 223: 220: 215: 214: 212: 210: 207: 206: 199: 194: 191: 186: 185: 183: 179: 174: 173: 166: 161: 158: 153: 152: 150: 147: 143: 142: 137: 129: 125: 120: 110: 106: 101: 97: 96: 92: 82: 78: 73: 69: 68: 64: 56: 52: 48: 44: 40: 33: 19: 3077: 2647: 2605: 2579: 2448:Chromium(VI) 2342:Chromium(IV) 1933:Chromium(II) 1740: 1736: 1727: 1725: 1719:. Retrieved 1712:the original 1693: 1683: 1674: 1665: 1646: 1636: 1609: 1580: 1551: 1545: 1528: 1524: 1517: 1505: 1482: 1473: 1440: 1436: 1426: 1403: 1394: 1371: 1321:IARC Group 1 1317:carcinogenic 1307: 1277: 1273: 1198: 1155:heavy metals 1144: 1127:Applications 1116: 1057: 1048: 1007: 999: 991: 989: 980: 941: 938: 905: 892:chromic acid 888: 843: 834: 793: 759: 735:trichromates 734: 732: 721: 700:+ 2 H ⇌ Cr 681: 678:for chromate 610: 526: 510: 509: 484:Chromic acid 139:Identifiers 55:tetrachromat 2964:Dichromates 2408:Chromium(V) 1876:Chromium(I) 1806:Chromium(0) 1325:lung cancer 1267:+ 8 CO 1259:+ 2 Fe 1251:→ 8 Na 1239:+ 8 Na 1231:4 FeCr 1159:lanthanides 1138:painted in 550:. They are 419:Properties 227:CHEBI:33141 219:CHEBI:35404 43:monochromat 18:Trichromate 3145:Categories 1721:2020-01-05 1643:"Chromite" 1627:3527306730 1525:Polyhedron 1387:References 1247:+ 7 O 1136:School bus 902:, but the 783:. All poly 558:in the +6 527:Dichromate 469:Molar mass 311:9LKY4BFN2V 303:9S2Y101D6M 176:3D model ( 165:13907-47-6 157:13907-45-4 146:CAS Number 51:trichromat 3151:Chromates 2655:Chromates 1726:There is 1691:(2012) . 1465:231808339 1457:2196-7105 1194:Australia 800:weak acid 785:oxyanions 552:oxyanions 47:dichromat 2939:(OSi(OCH 2171:][CH 1351:See also 1298:Toxicity 1292:lópezite 1280:Crocoite 1201:chromite 1190:Tasmania 1090:+ 3 e → 1014:reducing 653:pyridine 645:covalent 617:peroxide 571:solution 566:. In an 556:chromium 511:Chromate 238:DrugBank 32:Chromate 3078:Related 3026:[NH 2841:[NH 2147:[Cr 1335:of the 1282:, PbCrO 925:⇌ HCrO 848:2  798:, is a 635:, CrO(O 568:aqueous 463: 260:PubChem 248:DB14182 3048:[C 2917:(OC(CH 2889:NH]CrO 2881:[C 2570:NH]CrO 2562:[C 2305:Cr(ClO 2229:Cr(OH) 1814:Cr(CO) 1704:  1653:  1624:  1588:  1558:  1493:  1463:  1455:  1414:  1333:cancer 1203:, FeCr 1092:Cr(OH) 758:, and 398:SMILES 122:Names 3116:EuCrO 2817:PbCrO 2807:CdCrO 2797:ZnCrO 2773:NiCrO 2745:BaCrO 2735:SrCrO 2725:CaCrO 2715:MgCrO 2705:BeCrO 2467:CrO(O 2191:Cr(NO 1980:Cr(CH 1715:(PDF) 1698:(PDF) 1461:S2CID 1363:Notes 1313:toxic 1171:redox 990:The p 960:⇌ Cr 691:2 CrO 649:ether 363:InChI 282:24503 274:24461 209:ChEBI 178:JSmol 53:, or 2870:KCrO 2759:(CrO 2524:CrOF 2420:Cr(O 2385:CrBr 2375:CrCl 2349:CrSi 2319:CrBr 2295:CrCl 2205:CrPO 2151:O(CH 2084:Cr(C 2053:CrBr 2043:CrCl 2027:CrSe 2018:CrSO 1998:CrSi 1965:Cr(C 1916:(CO) 1860:(CO) 1834:Cr(C 1702:ISBN 1689:IARC 1651:ISBN 1622:ISBN 1586:ISBN 1556:ISBN 1491:ISBN 1453:ISSN 1412:ISBN 1339:and 1337:nose 1315:and 1215:and 1161:and 1102:+ 5 1077:+ 4 850:HCrO 829:+ H; 807:HCrO 722:The 663:py. 442:and 293:UNII 3126:CrO 3091:CrO 3056:NH] 2935:CrO 2913:CrO 2849:CrO 2831:CrO 2787:CrO 2695:CrO 2681:CrO 2667:CrO 2582:CrF 2548:CrO 2534:CrO 2510:CrO 2485:CrO 2457:CrO 2434:CrF 2395:CrI 2365:CrF 2355:CrO 2329:CrI 2285:CrF 2257:(SO 2185:CrN 2141:CrB 2063:CrI 2033:CrF 2012:CrS 2007:CrO 1941:CrH 1883:CrH 1852:CrC 1614:doi 1533:doi 1445:doi 1441:236 1255:CrO 1067:CrO 973:+ H 947:HCr 934:+ H 921:CrO 898:CrO 894:, H 881:+ H 819:CrO 713:+ H 554:of 515:CrO 432:CrO 328:EPA 263:CID 3147:: 3102:Cr 3060:Cr 3034:Cr 3012:Cr 3008:Ag 2994:Cr 2976:Cr 2972:Na 2893:Cl 2874:Cl 2827:Pb 2783:Ag 2755:Fe 2691:Cs 2663:Na 2574:Cl 2552:Br 2538:Cl 2496:Cr 2275:Te 2271:Cr 2253:Cr 2239:Cr 2215:Cr 2175:CO 2167:O) 2163:(H 2155:CO 2117:Cr 1984:CO 1951:Cr 1904:(C 1900:Cr 1724:. 1673:. 1645:. 1620:. 1600:^ 1570:^ 1529:16 1527:. 1459:. 1451:. 1439:. 1435:. 1347:. 1243:CO 1227:: 1192:, 1157:, 1104:OH 1021:Cr 967:2− 862:Cr 860:⇌ 817:⇌ 802:: 778:13 764:Cr 762:, 753:10 739:Cr 737:, 728:pH 707:2− 694:2− 686:. 619:, 531:Cr 525:. 444:Cr 49:, 45:, 41:, 3128:5 3118:4 3108:7 3106:O 3104:2 3100:2 3098:H 3096:/ 3093:4 3089:2 3087:H 3066:7 3064:O 3062:2 3058:2 3054:5 3052:H 3050:5 3040:7 3038:O 3036:2 3032:2 3030:] 3028:4 3018:7 3016:O 3014:2 3010:2 3000:7 2998:O 2996:2 2992:2 2990:K 2982:7 2980:O 2978:2 2974:2 2949:2 2947:) 2945:3 2943:) 2941:3 2937:2 2927:2 2925:) 2923:3 2921:) 2919:3 2915:2 2891:3 2887:5 2885:H 2883:5 2872:3 2851:4 2847:2 2845:] 2843:4 2833:5 2829:2 2819:4 2809:4 2799:4 2789:4 2785:2 2775:4 2765:3 2763:) 2761:4 2757:2 2747:4 2737:4 2727:4 2717:4 2707:4 2697:4 2693:2 2683:4 2679:2 2677:K 2669:4 2665:2 2640:e 2633:t 2626:v 2584:6 2572:3 2568:5 2566:H 2564:5 2554:2 2550:2 2540:2 2536:2 2526:4 2516:2 2514:F 2512:2 2502:7 2500:O 2498:2 2494:2 2492:H 2490:/ 2487:4 2483:2 2481:H 2473:2 2471:) 2469:2 2459:3 2436:5 2426:4 2424:) 2422:2 2418:3 2416:K 2397:4 2387:4 2377:4 2367:4 2357:2 2331:3 2321:3 2311:3 2309:) 2307:4 2297:3 2287:3 2277:3 2273:2 2263:3 2261:) 2259:4 2255:2 2245:3 2243:S 2241:2 2231:3 2221:3 2219:O 2217:2 2207:4 2197:3 2195:) 2193:3 2179:] 2177:2 2173:3 2169:3 2165:2 2161:6 2159:) 2157:2 2153:3 2149:3 2123:2 2121:C 2119:3 2094:2 2092:) 2090:5 2088:H 2086:5 2065:2 2055:2 2045:2 2035:2 2020:4 2000:2 1990:2 1988:) 1986:2 1982:3 1973:) 1971:4 1969:O 1967:2 1957:2 1955:C 1953:3 1943:2 1918:6 1914:2 1912:) 1910:5 1908:H 1906:5 1902:2 1862:3 1858:6 1856:H 1854:6 1844:2 1842:) 1840:6 1838:H 1836:6 1816:6 1791:e 1784:t 1777:v 1743:. 1677:. 1659:. 1630:. 1616:: 1594:. 1565:. 1539:. 1535:: 1499:. 1467:. 1447:: 1420:. 1319:( 1284:4 1269:2 1265:3 1263:O 1261:2 1257:4 1253:2 1249:2 1245:3 1241:2 1237:4 1235:O 1233:2 1225:3 1223:O 1221:2 1209:4 1207:O 1205:2 1120:0 1117:ε 1097:3 1088:O 1084:2 1079:H 1072:4 1052:0 1049:ε 1044:O 1042:2 1035:7 1030:O 1026:2 995:a 992:K 984:a 981:K 979:p 975:, 970:7 964:O 962:2 957:7 954:− 951:O 949:2 931:4 928:− 923:4 919:2 917:H 909:a 906:K 904:p 900:4 896:2 885:O 883:2 876:7 871:O 867:2 855:4 838:a 835:K 833:p 824:4 812:4 796:4 789:4 773:O 769:4 748:O 744:3 717:O 715:2 710:7 704:O 702:2 697:4 661:2 659:) 657:2 641:2 639:) 637:2 626:2 621:O 545:7 540:O 536:2 520:4 458:7 453:O 449:2 437:4 330:) 326:( 180:) 57:. 20:)

Index

Trichromate
Chromate
chromite (compound)
monochromat
dichromat
trichromat
tetrachromat

The structure and bonding of the dichromate ion
Ball-and-stick model of the chromate anion
Space-filling model of the dichromate anion
Systematic IUPAC name
CAS Number
13907-45-4
13907-47-6
JSmol
Interactive image
Interactive image
ChEBI
CHEBI:35404
CHEBI:33141
DrugBank
DB14182
PubChem
24461
24503
UNII
9S2Y101D6M
9LKY4BFN2V
CompTox Dashboard

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