phosphorus sesquisulfide


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phosphorus sesquisulfide

[′fäs·fə·rəs ¦ses·kwē′səl‚fīd]
(inorganic chemistry)
P4S3 Flammable, yellow crystals, melting at 172°C; decomposed by hot water, insoluble in water, soluble in carbon disulfide; used as chemical intermediate and to make matches. Also known as tetraphosphorus trisulfide.