Copper sulfate is blue or light yellow granular crystals, the acidic aqueous solution, is a protective inorganic fungicides, relatively safe to humans and animals. Chemical formula CuSO4, the common name blue vitriol; blue rhombic crystals; density of 2.284 grams / cubic centimeter. Preparation of other copper compounds, copper sulfate is an important raw material. Mixed with milk of lime available "Bordeaux" solution, used as pesticides. Electrolytic refining of copper sulfate is also when the electrolyte.