五硫化二磷

分子式：PS5

分子量: 191.3

Phosphorus pentasulfide, is a nonmetallic inorganic compound . It is a yellow to greenish-yellow crystalline mass with an odor similar to hydrogen sulfide. It is a dangerous fire risk and ignites by friction or in contact with water. Boiling point is 995°F (535°C) and ignition temperature is 287°F (141°C). It decomposes upon contact with water or moist air, liberating toxic and flammable hydrogen-sulfide gas. Specific gravity is 2.09, so it is heavier than water. It is toxic by inhalation, with a TLV of 1 mg/m3 of air. The four-digit UN identification number is 1340. The NFPA 704 designation is health 2, flammability 1, and reactivity 2. Primary uses are in insecticides, safety matches, ignition compounds, and sulfonation. Phosphorus pentasulfide is a greenish-gray to yellow, crystalline solid with an odor of rotten eggs. The Odor Threshold is 0.005 ppm.

用于制造润滑油添加剂和杀虫剂。制造安全火柴、点火化合物，以及将硫引入有机化合物。五硫化二磷用于制造润滑油添加剂、杀虫剂、安全火柴和浮选剂。五硫化二磷（磷硫化物，P2S5）是一种杀虫剂。它也是油的添加剂和安全火柴的成分。