copper sulphate

British  

noun

1. 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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Example Sentences

See Examples For:

copper sulphate

Today when industrial-scale food adulteration occurs, such as the 85,000 tonnes of olives treated with copper sulphate that Italian police seized in February, we expect a systemic response.

From The Guardian ● Apr. 18, 2016

In particular, he and his team are working on alternative treatments for common vine mildews; the conventional one, copper sulphate, accumulates in soil in doses that are toxic to wildlife.

From Nature ● Dec. 19, 2012

Putting a crystal of copper sulphate in solution so that it grows is not life.

From Nature ● Oct. 12, 2011

After that, he brushed the two tablets with fine graphite, suspended them in a copper sulphate solution with pieces of pure copper and made master plates by electrolysis.

From Time Magazine Archive

When this disease appears, wash the sores with a solution of copper sulphate or a solution of peroxide of hydrogen and water, equal parts.

From Profitable Squab Breeding by Dare, Carl