Nomenclature
CAS number: 1066-30-4
C
6H
9CrO
6; mol wt 229.13.
C 31.45%, H 3.96%, Cr 22.69%, O 41.90%.
Cr(CH
3COO)
3.
Description and references
The commercial material, usually sold as a
concd soln of the basic acetate, Cr(OH)(C2H3O2)2, contains Na acetate or Na2SO4 impurities. Industrial prepn: Stover; Drew, US 2650239; US 2678328 (1953, 1954 both to Socony-Vacuum Oil). Prepn of hexahydrate:
Hein, Herzog in Handbook of Preparative Inorganic
Chemistry vol. 2, G. Brauer, Ed. (Academic
Press, New York, 2nd ed., 1965) p 1371. Toxicity data: Cavalli, Arch. Int. Pharmacodyn. 62, 330
(1939). Review: ACS Monograph
Series no. 132, entitled “Chromium,” vol. 1,
M. J. Udy, Ed. (Reinhold, New York, 1956) pp 229-233.
Derivative
Hydrate.
Properties
Approx Cr(C2H3O2)3.H2O, gray-green powder or violet plates.
Slightly sol in water. Practically insol in alc. MLD in frogs, mice, rabbits (mg/kg): 6185, 2290, 1604 i.v. (Cavalli).Derivative
Hexahydrate.
Nomenclature
Hexaaquochromium triacetate. Properties
Blue-violet needles. Readily sol in water, with
partial hydrolysis, giving a soln which is blue under the incident
light and red under transmitted light; solvolyzed by alc.Derivative
Basic.
Cr(OH)(C
2H
3O
2)
2; mol wt 187.09.
Cr 27.79%, O 42.76%, H 3.77%, C 25.68%.
Properties
Violet cryst powder. Freely sol in water.Use
As a mordant in dyeing; in tanning; in hardening
photographic emulsions; to improve light stability and dye affinity
of textiles and polymers; in catalyst for polymerization of olefins;
as an oxidation catalyst.