phos'phorus ses•qui•sul'fide

Pronunciation: (ses"kwi-sul'fīd), [key]
(not in scientific use) a yellow, crystalline, flammable substance, P4S3, insoluble in cold water and decomposed by hot water: used chiefly in organic synthesis and in the manufacture of matches.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

phosphorus pentoxidephosphorus trichloride


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