Chromic Acetate

Title: Chromic Acetate
CAS Registry Number: 1066-30-4
Molecular Formula: C6H9CrO6
Molecular Weight: 229.13
Percent Composition: C 31.45%, H 3.96%, Cr 22.69%, O 41.90%
Line Formula: Cr(CH3COO)3
Literature 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 Type: 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).
Toxicity data: MLD in frogs, mice, rabbits (mg/kg): 6185, 2290, 1604 i.v. (Cavalli)
Derivative Type: Hexahydrate
Additional Names: 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 Type: Basic
Molecular Formula: Cr(OH)(C2H3O2)2
Molecular Weight: 187.09
Percent Composition: 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.
Chromic Bromide Chromic Carbonate Chromic Chloride Chromic Fluoride Chromic Formate