Basic Copper Chloride is a kind of green crystal or crystalline powder, insoluble in water, soluble in acid and ammonia. Join the 2ml CuCl2 solution in a test tube, add a certain amount of NaOH solution, concussion, you can get blue green emulsion. This solution is heated to boiling. Not observed signs of decomposition of black CuO, the light green precipitate is very small solubility of tribasic copper chloride Cu4 (OH) 6Cl2.

Reaction with alkali generation will get blue floc, as copper hydroxide in boiling water is decomposed into copper oxide, which is the property of the special Ultrafine Products.