copper sulphate

noun

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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Examples from the Web for copper sulphate

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Here the copper-sulphate method was put to a practical test.
The Home Medical Library, Volume V (of VI)
Various

copper sulphate

Examples from the Web for copper sulphate

Historical Examples

Here the copper-sulphate method was put to a practical test.