Traits: purple crystals, slight deliquescence in air, easily soluble in water, ethanol, propanol,slightly soluble in ether. The aqueous solution is purple, blue change after heating, cooling and thenrestore the purple. 110-120 ℃ dehydration, melting point: 80°C.
Purposes: as ammonia absorbers, gas mask, electroplating, manufacturing driers and other cobalt salts,indicating that the moisture level of the gum, the system air pressure meter, hydrometer and invisible ink, etc..
Packing: 25kg / barrel