Cobalt acetate Chemical Properties
- Melting point:
- 298 °C (dec.)(lit.)
- Pale pink to purple
- Water Solubility
- Soluble in waterSoluble in water, alcohol, dilute acids and pentyl acetate(tetrahydrate).
- CAS DataBase Reference
- 71-48-7(CAS DataBase Reference)
- EPA Substance Registry System
- Acetic acid, cobalt(2+) salt (2:1) (71-48-7)
Cobalt acetate Usage And Synthesis
Cobalt(II) acetate is used for bleaching and drying varnishes and laquers. Other applications are: as a foam stabilizer for beverages; in sympathetic inks; as a mineral supplement in animal feed; and as a catalyst for oxidation. It also is used in aluminum anodizing solutions.
Cobalt(II) acetate is prepared by dissolving cobalt(II) carbonate or hydroxide in dilute acetic acid, followed by crystallization. Also, it may be prepared by oxidation of dicobalt octacarbonyl in the presence of acetic acid.
Violet Crystalline Powder
Red-to-violet monoclinic crystals (anhydrous acetate is light pink in color); density 1.705 g/cm3; becomes anhydrous when heated at 140°C; soluble in water, alcohols and acids.
Sympathetic inks, paint and varnish driers, catalyst, anodizing, mineral supplement in feed additives, foam stabilizer.
ChEBI: A cobalt salt in which the cobalt metal is in the +2 oxidation state and the counter-anion is acetate.
Red-violet crystalline solid. Vinegar-like odor.
Air & Water Reactions
Water soluble. Deliquescent
Salts, basic, such as Cobalt acetate, are generally soluble in water. The resulting solutions contain moderate concentrations of hydroxide ions and have pH's greater than 7.0. They react as bases to neutralize acids. These neutralizations generate heat, but less or far less than is generated by neutralization of the bases in reactivity group 10 (Bases) and the neutralization of amines. They usually do not react as either oxidizing agents or reducing agents but such behavior is not impossible.
May not be used in food products (FDA).
Inhalation causes shortness of breath and coughing; permanent disability may occur. Ingestion causes pain and vomiting. Contact with eyes causes irritation. Contact with skin may cause dermatitis.
Special Hazards of Combustion Products: Toxic cobalt oxide fumes may form in fire.
Poison by intravenous route. Moderately toxic by ingestion. Questionable carcinogen. Mutation data reported. See also COBALT COMPOUNDS. When heated to decomposition it emits acrid smoke and irritating fumes.
Cobalt acetate Preparation Products And Raw materials
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