calcium sulfide

American  

noun

1. a yellow to light-gray, slightly water-soluble powder, CaS, having the odor of rotten eggs when moist: used chiefly in the preparation of luminous paint, hydrogen sulfide, and as a depilatory in cosmetics.

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Example Sentences

Officials say investigators determined that the fumes came from calcium sulfide and sulfuric acid, and did not come from a natural gas leak.

From Washington Times

The thread of nitrated cellulose may be rendered less inflammable by taking out the nitrate groups by treatment with ammonium or calcium sulfide.

From Project Gutenberg