Nomenclature
CAS number: 1314-80-3
Phosphoric sulfide; thiophosphoric anhydride; phosphorus persulfide.
P
2S
5; mol wt 222.27.
P 27.87%, S 72.13%.
Description and references
Exists as P4S10. Conveniently
prepd by fusing red phosphorus with sulfur: Stock, Herscovici, Ber. 43, 1223 (1910); Klement
in Handbook of Preparative Inorganic Chemistry vol. 1, G. Brauer, Ed. (Academic Press, New York, 2nd
ed., 1963) p 567. Manuf: Faith, Keyes &
Clark's Industrial Chemicals, F. A. Lowenheim, M. K. Moran,
Eds. (Wiley-Interscience, New York, 4th ed., 1975) pp 650-653.
Properties
Light yellow, triclinic crystals; peculiar odor.
d 2.09. mp 286-290°; bp 513-515°. Dec by water forming H3PO4 and H2S; sol in carbon disulfide, in aq
soln of alkali hydroxides. Dangerous when wet;
flammable. Keep tightly closed.Caution
Potential symptoms of overexposure
are irritation of eyes, skin and respiratory system; apnea, coma and
convulsions; conjunctival pain, lacrimation, photophobia, kerato-conjunctivitis
and corneal vesiculation; dizziness; headache; fatigue; irritability,
insomnia; GI disturbance. See NIOSH Pocket Guide to Chemical Hazards (DHHS/NIOSH 97-140,
1997) p 256.Use
In manuf of lube oil additives and pesticides.
Manuf safety matches, ignition compds, and for introducing sulfur
into organic compds.