Dark blue triclinic crystal or blue crystalline powder or granule. It smells like nasty metal. It slowly weathers in dry air. It`s very soluble in water and the solution is acidic. PH value of 0.1mol/L water solution is 4.17(15℃). It`s very soluble in glycerol. It`s soluble in dilute ethanol but insoluble in pure ethanol. Copper sulfate pentahydrate is a chemical raw material for pigments, batteries, insecticides, wood preservation, etc. Copper sulfate pentahydrate is one of the most important copper salts. It has been widely used in electroplating, printing and dyeing, pigments, pesticides and so on. The Bordeaux solution of inorganic pesticide is a mixture of copper sulfate and lime emulsion. It is a good fungicide and can be used to control diseases of many crops.