NIOSH Publication No. 2005-151:

NIOSH Pocket Guide to Chemical Hazards

September 2005

Phosphorus pentasulfide

CAS
1314-80-3

P2S5/P4S10

RTECS
TH4375000
Synonyms & Trade Names

Phosphorus persulfide, Phosphorus sulfide, Sulfur phosphide
DOT ID & Guide
1340 / 139

Exposure
Limits

NIOSH REL: TWA 1 mg/m3 ST 3 mg/m3
OSHA PEL: TWA 1 mg/m3
IDLH
250 mg/m3 See: 1314803
Conversion
Physical Description
Greenish-gray to yellow, crystalline solid with an odor of rotten eggs.
MW: 222.3 (P2S5); 444.6 (P4S10)
BP: 957°F
MLT: 550°F
Sol: Reacts
VP(572°F): 1 mmHg
IP: ?

Sp.Gr: 2.09
Fl.P: ?
UEL: ?
LEL: ?

Flammable Solid, which may SPONTANEOUSLY ignite in presence of moisture.
Incompatibilities & Reactivities

Water, alcohols, strong oxidizers, acids, alkalis [Note: Reacts with water to form hydrogen sulfide, sulfur dioxide, and phosphoric acid.]
Measurement Methods
None available
See: NMAM or OSHA Methods
Personal Protection & Sanitation
(See protection)
Skin: Prevent skin contact
Eyes: Prevent eye contact
Wash skin: When contaminated
Remove: When wet or contaminated
Change: Daily

First Aid
(See procedures)
Eye: Irrigate immediately
Skin: Dust off solid; water flush
Breathing: Respiratory support
Swallow: Medical attention immediately
Respirator Recommendations
NIOSH/OSHA
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
Escape:
(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
Important additional information about respirator selection
Exposure Routes
inhalation, ingestion, skin and/or eye contact
Symptoms
Irritation eyes, skin, respiratory system; apnea, coma, convulsions; conjunctivitis pain, lacrimation (discharge of tears), photophobia (abnormal visual intolerance to light), kerato-conjunctivity, corneal vesiculation; dizziness; headache; lassitude (weakness, exhaustion); irritability, insomnia; gastrointestinal disturbance
Target Organs
Eyes, skin, respiratory system, central nervous system
See also: INTRODUCTION   See MEDICAL TESTS: 0190