hydrosulphide

/ ˌhaɪdrəʊˈsʌlfaɪd /

noun

any salt derived from hydrogen sulphide by replacing one of its hydrogen atoms with a metal atom Technical namehydrogen sulphide

Sulphide of ammonium, Hydrosulphide of ammonium, Hydrosulphate of ammonia.

It is a white powder which is readily decomposed by water with the formation of the hydroxide and hydrosulphide.

The action of the vapor of the ammonium hydrosulphide will cause the obliterated writing to slowly turn brown, then black.

Two saucers containing yellow ammonium hydrosulphide are placed in the bottom of the box.

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