Copper sulfate can be used to kill fungi. After mixing with lime water, Bordeaux solution is produced, which is used as a bactericide to control fungi on crops such as lemons and grapes. Dilute solution is used for sterilization and snail control in aquarium. Because copper ions are toxic to fish, the dosage must be strictly controlled. Very low concentration of copper sulfate can kill most fungi, and Escherichia coli can also be controlled. In addition, aquaculture is also the main raw material of trace element copper as feed additive.

Extended data

Use of copper sulfate

1, which is used as analytical reagent, for example, it can be used to prepare the solution b of Ferlin reagent for identifying reducing sugar and biuret reagent for identifying protein in biology, but it is usually used now;

2. Used as food-grade chelating agent and clarifying agent, used in the production of preserved eggs and wine;

3. Industrial field. Used to make other copper salts such as cuprous chloride, cuprous chloride, cuprous pyrophosphate, cuprous oxide, copper acetate and copper carbonate, and copper monoazo dyes such as reactive brilliant blue and reactive violet. The coating industry is used to produce antifouling paints for ship bottoms; Electroplating industry is used as the main salt and copper ion additive for all-bright acidic copper plating; Printing and dyeing industry is used as mordant and oxygen promoter for fine dyed cloth;

The organic industry is used as a catalyst for the synthesis of perfume and dye intermediates and a polymerization inhibitor for methyl methacrylate. Anhydrous salt is used to catalyze acetal transfer reaction. Anhydrous salt reacts with potassium permanganate to generate oxidant, which is used to convert primary alcohol.

4. In the agricultural field, Bordeaux mixture is produced after mixing with lime water, which is used as a bactericide to control fungi on crops and prevent fruit from rotting; Because copper ions are toxic to fish, the dosage must be strictly controlled. Breeding industry is also used as the main raw material of trace element copper as feed additive;

5. Dehydrating agents for alcohols and organic compounds. Gas desiccant.

6, chemistry education, copper sulfate is usually included in children's chemical experimental reagents, used in crystal formation experiments and copper electroplating experiments. Because of its toxicity, it is not recommended for children. Copper sulfate can also be used to demonstrate the process of dehydration and weathering of crystals to obtain crystal water. In the experimental examination of junior high school, the law of conservation of mass was verified by the substitution reaction of copper sulfate and iron. Sulfuric acid can also be prepared.

7. Used as emetic in medical field.

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