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Temephos																				Related Pages
Synonyms & Trade Names
			Abate®, Temefos, O,O,O'O'-Tetramethyl O,O'-thiodi-p-phenylene phosphorothioate
CAS No.
			3383-96-8
	RTECS No.
			TF6890000
	DOT ID & Guide

FormulaS[C6H4OP(S)(OCH3)2]2
	Conversion
	IDLH
			N.D.See: IDLH INDEX

Exposure Limits
			NIOSH RELTWA 10 mg/m3 (total) TWA 5 mg/m3 (resp)
					OSHA PEL TWA 15 mg/m3 (total) TWA 5 mg/m3 (resp) See Appendix G
	Measurement Methods
			**NIOSH** 0500 , 0600;**OSHA** PV2056
					
					See: NMAM or OSHA Methods
										
Physical Description
			White, crystalline solid or liquid (above 87°F).
					[insecticide] [Note: Technical grade is a viscous, brown liquid.]													
										
Molecular Weight466.5	
	Boiling Point248-257°F (Decomposes)
	Melting Point87°F
	SolubilityInsoluble
	Vapor Pressure(77°F): 0.00000007 mmHg
	Ionization Potential?											
Specific Gravity1.32	
	Flash Point?
	Upper Explosive Limit?
	Lower Explosive Limit?
Combustible Solid
Incompatibilities & Reactivities
			None reported
Exposure Routes
			inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms
			irritation eyes, blurred vision; dizziness; dyspnea (breathing difficulty); salivation; abdominal cramps, nausea, diarrhea, vomiting
Target Organs
			Eyes, respiratory system, central nervous system, cardiovascular system, blood cholinesterase
										
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:**Soap wash immediately
							**Breathing:**Respiratory support
							**Swallow:**Medical attention immediately
Respirator Recommendations
			Not available.
				Important additional information about respirator selection
See also
			INTRODUCTION
					  ICSC CARD: 0199

			
							

			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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Chemical Names, Synonyms and Trade Names
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CAS Numbers
RTECS Numbers
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
First Aid Procedures Follow NIOSH Facebook
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