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Copper(II) sulfate CAS#7758-98-7
Basic Information
blue vitriol
CuSO₄
greenish-white crystalline solid (anhydrous); blue powder, granules or ultramarine crystals (pentahydrate)
Copper(II) sulfate is an inorganic copper salt whose appearance depends on hydration. The anhydrous material is pale to grayish white, whereas the pentahydrate forms blue crystals; moisture converts the anhydrous salt toward its hydrated form. It dissolves in water to give blue, generally acidic solutions. Applications include electroplating, mineral flotation, chemical synthesis and laboratory work, with the supplied hydration state requiring confirmation.
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Chemical Identity and Appearance: Copper(II) sulfate (CuSO₄, CAS 7758-98-7) is an inorganic copper salt. The anhydrous form is typically white to grayish-white, while copper(II) sulfate pentahydrate (CuSO₄·5H₂O, CAS 7758-99-8) forms blue crystals. The supplied form should be confirmed when ordering.
Water Solubility: Copper(II) sulfate dissolves in water to form a blue solution. Solubility varies with temperature, and solutions are generally acidic.
Heating and Moisture Response: The pentahydrate loses its water of crystallization in stages when heated. Anhydrous copper sulfate absorbs moisture and turns blue as it hydrates. At sufficiently high temperatures, copper sulfate decomposes, releasing sulfur oxides.
Industrial Applications: Copper(II) sulfate is used in electroplating, mineral flotation, chemical synthesis, and laboratory applications. Product purity and impurity limits should match the intended use.
Handling and Storage: Store tightly sealed in a cool, dry, well-ventilated area. Avoid ingestion, dust inhalation, and eye contact. Prevent release into waterways, as copper sulfate is highly toxic to aquatic life.
Products Description of Copper(II) sulfate CAS#7758-98-7
Anhydrous copper sulfate is a greenish-white crystalline solid, while its pentahydrate occurs as blue powder, granules or ultramarine crystals.
The molecular weights are 159.60 (anhydrous) and 249.70 (pentahydrate).
The pentahydrate partially dehydrates at about 110 °C and fully loses water near 150 °C, melting and decomposing around 200 °C.
Anhydrous copper sulfate decomposes into copper(II) oxide at 650 °C.
Product Applications of Copper(II) sulfate CAS#7758-98-7
Copper sulfate, or blue vitriol, is synthesized from sulfuric acid and elemental copper. It forms bright blue crystals soluble in water and alcohol. Mixed with ammonia, it is applied in liquid filtration systems. Blended with potassium bromide, it yields copper bromide bleach for image enhancement and toning. It also serves as a restrainer in ferrous sulfate developers for collodion photography.
Parameters
Safety Information
Delivery Time
Inventory 2-3 working days New manufacturing 7-10 working days
Mode of Transportation
1. By Air, fast but expensive.
2. By Sea, usual and economy.
3. By Train, suit for middle Asia countries.
4. By Express, suit for small package.
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1. What products does Shandong Junzheng Chemical supply?
We supply inorganic chemicals, organic solvents, water treatment chemicals, and surfactants, including calcium chloride, soda ash, sodium bicarbonate, caustic soda, citric acid, ethyl acetate, and SLES. Please contact us to confirm specific product availability.
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Our products serve pharmaceutical, agrochemical, dye, rubber, construction, coal processing, and other chemical industries. Product suitability depends on the required grade, specifications, and application.
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Please provide the product name, CAS number, required specifications, quantity, packaging requirements, and destination port. These details help us prepare an accurate quotation.
4. How do you control product quality?
We follow strict quality testing procedures supported by technical personnel, research equipment, and an established management system. Specific quality requirements can be confirmed before placing an order.
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