Blue Copper Sulphate Powder , also known as cupric sulfate, is a chemical compound with the molecular formula CuSO4. It is a blue crystalline solid that is soluble in water and commonly used as a fungicide, algaecide, and herbicide. This is also used in the manufacturing of copper compounds, as a mordant in dyeing, and in electroplating. The powder should be stored in a cool, dry place away from children and pets. Blue Copper Sulphate Powder is toxic and should be handled with care. It can cause skin and eye irritation, and inhalation can cause respiratory problems. It should not be ingested, as it can cause serious health problems.