Copper Sulfate Granules

Copper sulfate appears as sky-blue or slightly yellowish granular crystals. Its aqueous solution is acidic. It is a protective inorganic fungicide, relatively safe for humans and livestock. Its chemical formula is CuSO₄. It usually exists as pentahydrate CuSO₄·5H₂O, commonly known as blue vitriol; it is a blue rhombic crystal with a density of 2.284 g/cm³. Copper sulfate is an important raw material for preparing other copper compounds. Mixed with lime milk, it can form “Bordeaux mixture” used as an insecticide. Copper sulfate is also used as an electrolyte in the electrolytic refining of copper.

Functions and Applications of Copper Sulfate
(1) In inorganic industry, used for manufacturing other copper salts such as cuprous chloride, cupric chloride, copper pyrophosphate, cuprous oxide, copper acetate, copper carbonate, etc.
(2) In dyestuff and pigment industry, used for producing copper-containing monoazo dyes such as reactive brilliant blue, reactive violet, etc.
(3) In organic industry, used as a catalyst for synthesizing intermediates of fragrances and dyestuffs, and as a polymerization inhibitor for methyl methacrylate.
(4) In coating industry, used as a fungicide for producing antifouling paints for ship bottoms; in electroplating industry, used as the main salt and copper ion additive for bright acid copper plating.
(5) In printing and dyeing industry, used as a mordant and oxygenating agent for fine dyeing of fabrics.
(6) Used as a fungicide in agriculture.
(7) In breeding industry, used as the main raw material of trace element copper for feed additives.
(8) Food-grade copper sulfate can be used as a chelating agent and clarifier in the production of preserved eggs and wine.
(9) In biology, used to prepare Fehling’s reagent for detecting reducing sugars and Solution B of Biuret reagent for identifying proteins, usually prepared fresh before use.
(10) Used for preparing Bordeaux mixture.