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7778-50-9 Potassium dichromate

product Name Potassium dichromate
CAS No 7778-50-9
Synonyms Potassium dichromate standard solution; Potassium bichromate; Red potassium chromate; dipotassium oxido-(oxido-dioxo-chromio)oxy-dioxo-chromium
Molecular Formula Cr2K2O7
Molecular Weight 294.1846
InChI InChI=1/2Cr.2K.7O/q;;2*+1;;;;;;2*-1/rCr2O7.2K/c3-1(4,5)9-2(6,7)8;;/q-2;2*+1
EINECS 231-906-6
Molecular Structure 7778-50-9 Potassium dichromate
Melting point 398℃
Water solubility 125 g/L (20℃)
Hazard Symbols  O:Oxidizing agent;
 T+:Very toxic;
 N:Dangerous for the environment;
Risk Codes R8:;
R21:;
R25:;
R26:;
R34:;
R42/43:;
R45:;
R46:;
R48/23:;
R50/53:;
R60:;
R61:;
Safety Description S45:;
S53:;
S60:;
S61:;
MSDS Material Safety Data Sheet

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Specifications Purity: 99.8%
Packing 25kg, 500kg, 1000kg bag seaworthy
Description

DESCRIPTION

Other name: Chromium potassium oxide (K2Cr2O7); Dichromic acid dipotassium salt; Dipotassium bichromate

Appearance: Red-orange crystalline solid

Molecular formula: K2Cr2O7

Molecular weight: 294.18

CAS No.: 7778-50-9

EINECS No.: 231-906-6

UN No.: 3288

SPECIFICATION

Potassium dichromate(HG/T2324-2005)

Appearance:Red-orange crystalline solid

Content(K2Cr2O7)%:99.8min

Sulpahte(SO42-)%:0.01max

chloride(Cl-)%:0.02max

Na%:0.3max

APPLICATION:It is mainly used for making chromium trioxide, chrome yellow pigment, steel passivation, welding electrode, matches, used as oxidant, chromium potassium alum, and used in the manufacture of chemical reagents, etc.

PACKAGE:40kg/bag, plastic bag inside and knitting bag outside.

STORAGE:1. Do not store near foodstuffs or reductants.

2. Do not mix with inflammable substances.
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1Huangshi Yucheng Trade Co., Ltd.
2Wenzhou Chemical Material Factory
3Sinochem Hebei (Tianjin) Import & Export Corporation.
4Tianjin Xinxin Biotechnology Research And Development Center
5Anshan Pan-asia Import & Export Company Limited
6LIANYUNGANG CHEMIVIT INTERNATIONAL CO.,LTD
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