Alternate Names: Copper(II) sulfate pentahydrate, blue stone, cupric sulfate, copper sulphate
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|DENS - Density (Specific Gravity)||2.28|
Copper sulfate is a blue crystalline powder or granulate. It slowly effluoresces in air. It can be easily dehydrated to its gray anhydrous form by heating, then changed by to crystals by adding water. It is soluble in water, methanol, slightly soluble in alcohol and glycerol.
It is made by exposing copper or copper oxide to a dilute sulfuric acid and then evaporating and the crude sulfate to purify by recystallization. Many grades are available and huge amounts are manufactured so that less pure grades and inexpensive.
Copper sulfate is used in agricultural chemicals, feeds, germicides; in the textile and leather industries, in pigments, electric batteries, as a reagent in analytical chemistry, in medicine, as a wood preservative, for engraving and lithography; in the mining and petroleum industries; for use in synthetic rubber; steel manufacture; and in asphalts. The anhydrous salt is used as a dehydrating agent.
Copper sulfate is employed in ceramics for metallic coloration and is sometimes sprayed as a solution or used as a creamy paste on biscuit for pit firing.
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Synthetic Malachite, CuCO3