2221. Chromic Carbonate

Nomenclature

CAS number: 29689-14-3

Description and references

Cr2O3.xCO2.yH2O. A basic carbonate of indefinite composition, contg. 50-55% Cr. Obtained by pptg a chromic salt with a sol carbonate or bicarbonate.

Properties

Blue-green amorphous powder. Practically insol in water. Slightly sol in CO2-contg water; sol in mineral acids.

Use

Prepn of chromic salts.