phosphorus pentasulfide


phosphorus pentasulfide

[′fäs·fə·rəs ¦pen·tə′səl‚fīd] (inorganic chemistry) P2S5 Flammable, hygroscopic, yellow crystals, melting at 281°C; decomposes in moist air; soluble in alkali hydroxides; used to make lube-oil additives, rubber additives, and flotation agents.