a copper salt found naturally as chalcanthite and made by the action of sulphuric acid on copper oxide. It usually exists as blue crystals of the pentahydrate that form a white anhydrous powder when heated: used as a mordant, in electroplating, and in plant sprays. Formula: CuSO 4
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- copper penny,
- copper pyrites,
- copper river,
- copper spot,
- copper sulfate,
- copper-sulfate method,
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Examples from the Web for copper sulphate
Here the copper-sulphate method was put to a practical test.