Violet-red rhombic crystal. Insoluble in cold water, soluble in acid, ammonium carbonate and liquid ammonia. Decomposed in hot water. Suspended in water surface, can be absorbed by carbon dioxide. Preparation: Add sodium carbonate solution to cobalt ethanol and get it.
Red violet crystal; insoluble in water; decomposes in hot water; soluble in dilute acids and ammonia.
The cobalt carbonate basic salt is the commercially-used cobalt carbonate. It is used primarily for manufacturing cobalt pigments. It also is used to prepare cobalt(II) oxide and other cobalt salts.
The basic carbonate is prepared by adding a solution of sodium carbonate to a cobalt(II) acetate or other Co2+ salt solution. The precipitate is filtered and dried.
