Nomenclature
CAS number: 1314-85-8
Phosphorus sesquisulfide; trisulfurated phosphorus.
P
4S
3; mol wt 220.09.
P 56.29%, S 43.71%.
Description and references
Prepn by fusing red phosphorus with sulfur:
Stock, Ber. 43, 150
(1910); also from white phosphorus and sulfur in a high-boiling solvent
such as α-chloronaphthalene: Frary, DE 309618 (1918); Chem. Zentralbl. 1919, II, 55.
Properties
Yellowish-green, long, rhombic needles from benzene.
Stable to air. d420 2.03. mp 172.5°. bp 407.5°. Insol in cold water. Dec by hot water, yielding H2S. Soly in carbon disulfide (20°): about 60% (w/w). Sol in benzene,
similar hydrocarbons, phosphorus trichloride.Use
In match tips.