Cobalt hydroxide is a fine inorganic compound, generally a rose-red monoclinic or tetragonal crystal, which is decomposed by heating at a relative density of 3.597 (15 ° C).
Cobalt hydroxide is soluble in acid and ammonium salts and insoluble in water and ethanol. Reacts with some organic acids to form a cobalt-containing soap. Easy to decompose when heated.
Cobalt hydroxide is dehydrated to CoO by heating at 160 ° C in a vacuum. It is more active and can react to form a salt in a weak acid aqueous solution. In the presence of oxygen, the reaction rapidly changes to a high-priced state. It is generally prepared by reacting a cobalt salt with an alkali metal hydroxide or by using cobalt as an anode to electrolyze brine.
Cobalt hydroxide is used as a cobalt salt raw material, as a desiccant for paints and varnishes, as a saturated liquid for batteries, as a catalyst for decomposition of H2O2, and the like.
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