Copper sulfate with chemical formula CuSO4 * 5 H2O has blue crystals, clear and light blue powder. 24% copper sulfate crystals gradually bloom in dry air. At 45 degrees it loses two molecules of water and at 110 degrees it loses four molecules of crystalline water and it loses the last crystalline water at 250 degrees Celsius. It decomposes at a temperature of 400 degrees. Its specific gravity is 2.87. One gram of pure copper sulfate is dissolved in 3 ml of cold water and 0.5 ml of boiling water and its solubility in water containing sulfuric acid is reduced. Copper sulfate or; Blue gem; Or blue alum; is a chemical compound that is used in a wide range of industries.

Copper oxide (red) is used in many industries, some of which are mentioned below.

Anti-fouling coatings

Mineral supplements for animal diets

Paint and pigment industry in the manufacture of porcelain, glaze, and glass

the catalyst

Welding pastes

Agriculture industry