Physical and chemical properties:

Blue or blue-green gel or light blue crystalline powder is a kind of blue flocculent precipitation with a relative density of 3.368. It is difficult to dissolve in water, decomposes when heated, slightly shows amphoteric, dissolves in acid, ammonia water and sodium cyanide, and easily dissolves in alkaline glycerol solution. When heated to 60-80 ℃, it becomes dark, and then decomposes into black copper oxide and water at a higher temperature.

Main use:

① Agricultural insecticides and fungicides; ② Analytical reagents, catalysts, and paper dyes; ③ Medicine; ④ Feed additives; ⑤ Manufacturing other copper salts.