Synonyms & Trade NamesPhosphorus persulfide, Phosphorus sulfide, Sulfur phosphide
NIOSH RELTWA 1 mg/m3 ST 3 mg/m3
OSHA PELTWA 1 mg/m3 See Appendix G
Physical DescriptionGreenish-gray to yellow, crystalline solid with an odor of rotten eggs.
Molecular Weight222.3 (P2S5)
Vapor Pressure(572°F): 1 mmHg
Upper Exposive Limit?
Lower Explosive Limit?
Incompatibilities & ReactivitiesWater, alcohols, strong oxidizers, acids, alkalis [Note: Reacts with water to form hydrogen sulfide, sulfur dioxide, and phosphoric acid.]
Exposure Routesinhalation, ingestion, skin and/or eye contact
Symptomsirritation eyes, skin, respiratory system; apnea, coma, convulsions; conjunctivitis pain, lacrimation (discharge of tears), photophobia (abnormal visual intolerance to light), kerato-conjunctivitis, corneal vesiculation; dizziness; headache; lassitude (weakness, exhaustion); irritability, insomnia; gastrointestinal disturbance
Target OrgansEyes, skin, respiratory system, central nervous system
Personal Protection/Sanitation(See protection codes)
Skin:Prevent skin contact
Eyes:Prevent eye contact
Wash skin:When contaminated
Remove:When wet or contaminated
First Aid(See procedures)
Skin:Dust off solid; water flush
Swallow:Medical attention immediately
Up to 10 mg/m3:
(APF = 10) Any supplied-air respirator*
Up to 25 mg/m3:
(APF = 25) Any supplied-air respirator operated in a continuous-flow mode*
Up to 50 mg/m3:
(APF = 50) Any self-contained breathing apparatus with a full facepiece
(APF = 50) Any supplied-air respirator with a full facepiece
Up to 250 mg/m3:
(APF = 2000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode
Emergency or planned entry into unknown concentrations or IDLH conditions:
(APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode
(APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus
(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted canister providing protection against the compound of concern and having an N100, R100, or P100 filter.
Click here for information on selection of N, R, or P filters.
Any appropriate escape-type, self-contained breathing apparatus
- Page last reviewed:April 11, 2016
- Page last updated:April 11, 2016
- Content source:
- National Institute for Occupational Safety and Health (NIOSH) Education and Information Division