Copper Sulfate Pentahydrate丨CAS 7758-99-8

Copper sulfate pentahydrate丨CAS 7758-99-8 is a bright blue crystalline compound that is the most common form of copper sulfate. It is widely used in agriculture, industry, education, and chemistry. This hydrated form contains five molecules of water per copper sulfate unit, giving it its characteristic appearance and handling properties.

1. Agriculture and Animal Husbandry
● Fungicide and Pesticide: Copper sulfate pentahydrate丨CAS 7758-99-8 is used as a fungicide, algaecide, and molluscicide to control bacterial and fungal diseases in crops and aquatic systems. It is an active component of Bordeaux mixture (a blend of copper sulfate and lime) used to prevent mildew, leaf spots, blight, and other fungal infections.
● Animal Feed Supplement: It is added in trace amounts to animal feed as a source of copper, an essential micronutrient for proper development, immunity, and metabolism in livestock.
● Soil Additive: In soils deficient in copper, it is used to correct micronutrient imbalances, promoting healthy plant growth.
2. Industrial Applications
● Electroplating and Metal Finishing: Copper sulfate is extensively used in electroplating, especially in copper plating baths. It helps deposit copper onto substrates for corrosion resistance, conductivity, and aesthetics.
● Textile and Leather Industry: Used as a mordant in the dyeing of textiles and in leather tanning.
● Mining and Metallurgy: Employed in floatation processes to separate ores like zinc, lead, and iron by enhancing the binding of the desired metal to the flotation agent.
3. Chemistry and Laboratory Use
● Reagent in Chemical Education: Copper sulfate pentahydrate is a common reagent in school and university labs due to its vivid color and wide range of chemical reactivity. It's used in:
o Crystal-growing experiments.
o Demonstrating exothermic reactions.
o Identifying reducing sugars in Benedict's test.
● Synthesis and Catalysis: Serves as a catalyst or reagent in organic and inorganic synthesis, such as in the preparation of copper catalysts and coordination complexes.
4. Public Health and Water Treatment
● Algaecide in Water Systems: Used to treat and prevent the growth of algae in reservoirs, swimming pools, ponds, and fountains. It inhibits the growth of algal blooms that can harm aquatic life or interfere with water usage.
● Antimicrobial Agent: Sometimes applied as an antimicrobial in wood preservation, preventing fungal decay and insect infestation.
5. Construction and Cement Industry
● Pigment and Admixture: Copper sulfate is sometimes used in pigments for decorative concrete and as a set retarder in cement formulations.

1. Multifunctional Utility
● Copper sulfate pentahydrate丨CAS 7758-99-8 serves across diverse sectors-agriculture, industry, healthcare, and science-due to its strong oxidizing ability, antifungal and antibacterial properties, and solubility in water.
2. Cost-Effective and Readily Available
● Copper sulfate pentahydrate is relatively inexpensive, easy to produce, and stable in storage, making it an economical choice for large-scale applications.
3. Essential Micronutrient
● As a source of copper, it helps correct deficiencies in plants and animals, improving overall yield, health, and productivity in agriculture and livestock farming.
4. Environmental and Biological Compatibility
● Though toxic in high concentrations, at controlled doses it is biodegradable and naturally occurring, breaking down in the environment with relatively low persistence compared to synthetic chemicals.
5. Visual Educational Tool
● Its vivid blue color and pronounced reactivity make it an excellent visual aid for chemistry demonstrations, helping students grasp concepts of hydration, crystal formation, and redox reactions.

Copper sulfate pentahydrate丨CAS 7758-99-8 is a versatile and widely used compound with applications ranging from fungicide and nutritional supplement to chemical reagent and industrial additive. Its effectiveness in agriculture, water treatment, and laboratory chemistry makes it a vital material in multiple fields. When used responsibly, it offers both practical and economic benefits across many industries.