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

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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

The copper sulphate solution, being the heavier of the two, rests at the bottom of the battery jar, while the dilute sulphuric acid remains at the top.

From Hawkins Electrical Guide, Number One Questions, Answers, & Illustrations, A Progressive Course of Study for Engineers, Electricians, Students and Those Desiring to acquire a Working Knowledge of Electricity and its Applications by Hawkins, Nehemiah