Sodium dichromate dihydrate
[CAS# 7789-12-0]

Identification

• Classification: Inorganic chemical industry >> Inorganic salt >> Metal oxide acid salt
• Name: Sodium dichromate dihydrate
• Synonyms: Sodium dichromate dihydrate; Sodium bichromate dihydrate
• Molecular Formula: Na₂Cr₂O₇.2(H₂O)
• Molecular Weight: 298.00
• CAS Registry Number: 7789-12-0
• EC Number: 234-190-3

Properties

• Melting point: 357 °C
• Boiling point: 400 °C
• Water solubility: 730 g/L (20 °C)

Safety Data

• Hazard Symbols: O;T+;N
• Risk Statements: R21;R25;R26;R34;R42/43;R45;R46;R48/23;R50/53;R60;R61;R8
• Safety Statements: S45;S53;S60;S61

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Skin sensitization	Skin Sens.	1	H317
Acute hazardous to the aquatic environment	Aquatic Acute	1	H400
Chronic hazardous to the aquatic environment	Aquatic Chronic	1	H410
Carcinogenicity	Carc.	1A	H350
Acute toxicity	Acute Tox.	4	H312
Reproductive toxicity	Repr.	1B	H360
Carcinogenicity	Carc.	1B	H350
Specific target organ toxicity - repeated exposure	STOT RE	1	H372
Germ cell mutagenicity	Muta.	1B	H340
Skin corrosion	Skin Corr.	1B	H314
Oxidising solids	Ox. Sol.	2	H272
Acute toxicity	Acute Tox.	3	H301
Acute toxicity	Acute Tox.	2	H330
Respiratory sensitization	Resp. Sens.	1	H334