sodium hyposulphite

noun

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Copper may be separated from its solutions by means of sodium hyposulphite.

The iodine is measured by titrating with a solution of sodium hyposulphite, using starch paste as indicator.

The solution in hydrochloric acid is nearly neutralised and then boiled with sodium hyposulphite.

Sodium thiosulphate is familiar as sodium hyposulphite, the hypo of the photographers.

More commonly the salt is called sodium hyposulphite, or merely "hypo."

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