Cobaltous Acetate

Title: Cobaltous Acetate
CAS Registry Number: 71-48-7
Molecular Formula: C4H6CoO4
Molecular Weight: 177.02
Percent Composition: C 27.14%, H 3.42%, Co 33.29%, O 36.15%
Line Formula: Co(C2H3O2)2
Literature References: Prepd commercially from cobaltous hydroxide or carbonate and an excess of dil acetic acid: Morral in Kirk-Othmer Encyclopedia of Chemical Technology vol. 5 (Interscience, New York, 2nd ed., 1964) p 737; prepn from powdered Co and acetic acid: Hahl, US 3133942 (1964 to BASF); prepn by oxidation of Co carbonyls in the presence of acetic acid: Gwynn et al., US 3246024 (1966 to Gulf). Review: de Bie, Doyen, Cobalt 15, 3-13; 16, 3-15 (1962).
Properties: Light-pink crystals. Readily sol in water.
Derivative Type: Tetrahydrate
Additional Names: Bis(acetato)tetraaquocobalt
Properties: Intense red, monoclinic, prismatic crystals. d 1.705. On heating becomes anhydrous by 140°. Sol in water, alcohols, dil acids, pentyl acetate. pH of 0.2 molar aq soln 6.8.
Density: d 1.705
Use: Bleaching agent and drier for lacquers, varnishes; in anodizing; catalyst for oxidation and esterification; foam stabilizer for malt beverages.
Cobaltous Arsenate Cobaltous Bromide Cobaltous Carbonate Cobaltous Chloride Cobaltous Chromate(III)