12-02304. Chromous Oxalate [Archived]

Nomenclature

CAS number: 814-90-4
C2CrO4; mol wt 140.02.
C 17.16%, Cr 37.13%, O 45.71%.
CrC2O4.

Description and references

Prepn from chromous acetate and oxalic acid: Chromium Vol. 1, M. J. Udy, Ed., A.C.S. Monograph Ser., no. 132 (Reinhold, New York, 1956) p 227; from chromous sulfate and sodium oxalate: Lux, Illmann, Ber. 91, 2143 (1958). Reported as monohydrate (Udy, loc. cit.) or dihydrate (Lux, Illman, loc. cit.).

Derivative

Hydrate.

Properties

Yellow to yellowish-green crystalline powder. d 2.468. Most stable of chromous salts. Not appreciably oxidized by moist air. Practically insol in cold water, alcohol; sol in hot water, dil acids.

Status

This monograph has been retired and is no longer subject to revision or update.