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Chromium Potassium Sulfate dodecahydrate

CAS number : 7788-99-0

Molecular weight :499.40

Molecular formula/chemical symbol :CrK(SO4)2.12H2O

Description :

Purple-red to black octahedral cubic crystal. Ruby red in transmitted light. Easily weathered. Ruby red in transmitted light, heated to 100 ? C lose some crystal water becomes green too dihydrate 110 ° C, 350 into anhydrous yellowish green and lose water-soluble. Soluble in water and dilute acids, insoluble in alcohol, can be dissolved in 4 parts of cold water, 2 parts boiling water, almost insoluble in alcohol. Its aqueous solution cold, purple, hot green.

USES :

Microscopic analysis with the fixing agent, leather, preparation of other chromium salts.

 Keywords:Functional Chemicals

Report :

TEST ITEMS

TEST RESULT

(AR)

(CP)

≥99.5

99.0

Water insoluble matter

≤0.005

0.01

Chloride (Cl)

≤0.002

0.005

Ammonium salts (NH4) (%)

≤0.01

0.03

(AL)

≤0.02

0.05

(Fe)

≤0.005

0.02

Heavy metals (as Pb)

≤0.002

0.01