POTASSIUM CHLOROCHROMATE Property

Melting point:

293-295 °C

Density 

2.497

solubility 

reacts with H2O; soluble in acetone,acid solutions

color 

orange crystals, crystalline

Water Solubility 

soluble H2O, hydrolyzes [KIR78]

Exposure limits

OSHA: Ceiling 0.1 mg/m3
NIOSH: IDLH 15 mg/m3; TWA 0.0002 mg/m3

EPA Substance Registry System

Chromate(1-), chlorotrioxo-, potassium, (T-4)- (16037-50-6)

Safety

Hazard Codes 

N-T-O,T,O

Risk Statements 

8-50/53-49-43-36/37/38-45

Safety Statements 

61-60-53-45-37-24-17-36/37/39-27-26

RIDADR 

UN3087

TSCA 

Yes

HazardClass 

5.1

PackingGroup 

II

HS Code 

28415000

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Hazard statements

H272May intensify fire; oxidizer

H317May cause an allergic skin reaction

H350May cause cancer

H400Very toxic to aquatic life

H410Very toxic to aquatic life with long lasting effects

Precautionary statements

P201Obtain special instructions before use.

P221Take any precaution to avoid mixing with combustibles/…

P273Avoid release to the environment.

P309IF exposed or if you feel unwell:

P310Immediately call a POISON CENTER or doctor/physician.

POTASSIUM CHLOROCHROMATE Chemical Properties,Usage,Production

Chemical Properties

Sparkling, orange-colored crystalline needles, soluble in glacial acetic acid and acetone. Undergoes hydrolytic cleavage in water. Heating the salt to 100°C causes loss of chlorine.

Uses

Oxidizing agent.

Preparation

Fifty grams of fine K2Cr2O7 powder is dissolved in a mixture of 65 ml. of cone. HCl and 50 ml. of water (by heating to 70 °C). The solution is filtered through a jacketed funnel heated with hot water. After 1-2 days, the nascent crystals are filtered off with suction, recrystallized from glacial acetic acid, and dried in a vacuum desiccator over H2SO4.

Hazard

Toxic by ingestion and inhalation.