Detail of > 7778-50-9
- MSDS Download
- CAS Number:
- 7778-50-9
- Name:
Chromicacid (H2Cr2O7), potassium salt (1:2)
- Superlist Name:
- Potassium dichromate
- Formula:
- Cr2H2O7 . 2K
- Molecular Structure:
- Synonyms:
- Chromicacid (H2Cr2O7), dipotassium salt (9CI);Dichromic acid (H2Cr2O7), dipotassiumsalt (8CI);C 501;Chromium potassium oxide (K2Cr2O7);Dichromic aciddipotassium salt;Dipotassium bichromate;Dipotassium bichromate (K2Cr2O7);Dipotassium dichromate;Dipotassium dichromate (K2Cr2O7);Dipotassiumdichromium heptaoxide;Potassium bichromate;Potassium dichromate;Potassiumdichromate (K2(Cr2O7));Potassium dichromate(VI);SRM 935a;
- Molecular Weight:
- 294.20
- EINECS:
- 231-906-6
- Density:
- 2.676 g/cm3
- Melting Point:
- 398 °C
- Boiling Point:
- 500 °C
- Solubility:
- 125 g/L (20 °C) in water
- Appearance:
- Orange red crystals
- Hazard Symbols:
T, 
N, 
T+, 
O- Risk Codes:
- 45-46-60-61-8-21-25-26-34-42/43-48/23-50/53-52/53-20-48/20-23-51/53-22-36/37/38
- Safety:
- 53-45-60-61-36/37-23-26Details
- Transport Information:
- UN 3086 6.1/PG 1
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Reference
- Mechanism of corrosion processes during storage of spent fuel elements in aqueous solutions of potassium dichromate
- Mechanism of corrosion processes during storage of spent fuel elements in aqueous solutions of potassium dichromate. Berezin, G. Ya.; Kapitanov, V. F.; Shcherbakova, O. M. (Voronezh. Tekhnol. Inst., Voronezh, USSR). Deposited Doc., SPSTL 1194 Khp-D82, 7 pp. Avail. SPSTL (Russian) 1982. DOCUMENT TYPE: Report CA Section: 71 (Nuclear Technology) The corrosion was investigated of U and various structural materials (e.g., Mg-Be alloy PMB-2 [12684-46-7], Zr alloy Ts2M [91314-53-3], etc.), used in prepg. the cladding, in aq. solns. of K2Cr2O7 [7778-50-9]. The effect of adding certain salts as inhibitors was also examd.
- Selective flotation of mercury- and antimony-containing sulfide minerals
- Selective flotation of mercury- and antimony-containing sulfide minerals. Wang, Xiuyao; Wu, Zhendong (Baiyin Res. Inst. Min. Metall., Peop. Rep. China). Miner. Process. Extr. Metall., Pap. Int. Conf., 677-86. Edited by: Jones, Michael J.; Gill, P. Inst. Min. Metall.: London, UK. (English) 1984. CODEN: 52VSAY. DOCUMENT TYPE: Conference CA Section: 54 (Extractive Metallurgy) Cinnabar [19122-79-3] is sepd. from stibnite by selective flotation with K Bu xanthante [871-58-9] and pine oil, using Pb(NO3)2 for activation and K2Cr2O7 [7778-50-9] as depressant for stibnite. From ore contg. 0.27-0.39 Hg and 1.12-1.55% Sb, a conc. contg. 69.08-70.18 Hg and a conc. contg. 49.39-52.06% Sb (recovery 89-91%) were obtained. The mechanism of flotation is based on the formation of a hydrophilic PbCrO4 [7758-97-6] film.
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