2224. Chromic Formate

Nomenclature

CAS number: 27115-36-2
C3H3CrO6; mol wt 187.05.
C 19.26%, H 1.62%, Cr 27.80%, O 51.32%.
Cr(HCOO)3.

Description and references

Prepd from Cr(OH)3 and formic acid: Akhmedli, Negretov, J. Gen. Chem. USSR 20, 2045 (1950).

Derivative

Hexahydrate.

Properties

Fine green crystals or gray-green powder. Dec above 300°, evolving CO and CO2. Sol in water; concd aq soln is blue under incident light, red under transmitted light; dil aq soln is green.

Use

In printing cotton in skeins; in leather tanning and waterproofing.