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The Collaborative International Dictionary
Bisulphite

Bisulphite \Bi*sul"phite\, n. (Chem.) A salt of sulphurous acid in which the base replaces but half the hydrogen of the acid; an acid sulphite.

Wiktionary
bisulphite

n. (context inorganic chemistry British English) (alternative spelling of bisulfite English)

Usage examples of "bisulphite".

Schutzenberger and Lalande, bisulphite of soda and zinc dust are used with either quick-lime or caustic soda.

To this is then added 1 gallon of either hydrosulphite or bisulphite of soda to destroy the free oxygen it contains, and prevent it from oxidising the indigo solution, which is next added.

The preservatives mostly used are the bisulphites of lime and potash, and these, when employed in small quantities, are generally held to be harmless.