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Phosphorus pentasulfide																				Related Pages
Synonyms & Trade Names
			Phosphorus persulfide, Phosphorus sulfide, Sulfur phosphide
CAS No.
			1314-80-3
	RTECS No.
			TH4375000
	DOT ID & Guide
			1340 139

FormulaP2S5/​P4S10
	Conversion
	IDLH
			250 mg/m3See: 1314803

Exposure Limits
			NIOSH RELTWA 1 mg/m3 ST 3 mg/m3OSHA PEL TWA 1 mg/m3See Appendix G
	Measurement Methods
			None available 
					
					See: NMAM or OSHA Methods
										
Physical Description
			Greenish-gray to yellow, crystalline solid with an odor of rotten eggs.													
										
Molecular Weight222.3 (P2S5)444.6 (P4S10)	
	Boiling Point957°F
	Melting Point550°F
	SolubilityReacts
	Vapor Pressure(572°F): 1 mmHg
	Ionization Potential?											
Specific Gravity2.09	
	Flash Point?
	Upper Explosive Limit?
	Lower Explosive Limit?
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.]
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-conjunctivitis, corneal vesiculation; dizziness; headache; lassitude (weakness, exhaustion); irritability, insomnia; gastrointestinal disturbance
Target Organs
			Eyes, 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
							**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
See also
			INTRODUCTION
					  ICSC CARD: 1407
					  MEDICAL TESTS: 0190

			
							

			Page last reviewed:  October 30, 2019						Content
							source: 	National Institute for Occupational Safety and Health NIOSH Pocket Guide to Chemical Hazards
Introduction
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Appendices
A – NIOSH Potential Occupational Carcinogens
B – Thirteen OSHA-Regulated Carcinogens
C – Supplementary Exposure Limits
D – Substances with No Established RELs
E – OSHA Respirator Requirements for Selected Chemicals
F – Miscellaneous Notes
G – 1989 Air Contaminants Update Project: Exposure Limits NOT in Effect
Type C & CE – Definitions for Type C and Type CE Respirators
Personal Protection and Sanitation Codes
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