... MAXPH VALUE 5%SOL N3-4ApplicationCopper Sulphate is used for extracting the other copper is also used as a ... mordant, agricultural pesticides, fungicides, and for water treatment.Copper sulphate As a mordant for cotton and silk; Copper sulphate is ... green and blue pigment; used as insectucude, bactericide for water, antiseptics for wood, catalyst for tannage, electrocopper, battery. carving and so on ...