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Chlorpyrifos																				Related Pages
Synonyms & Trade Names
			Chlorpyrifos-ethyl, O,O-Diethyl O-3,5,6-trichloro-2-pyridyl phosphorothioate, Dursban®
CAS No.
			2921-88-2
	RTECS No.
			TF6300000
	DOT ID & Guide
			2783 152

FormulaC9H11Cl3NO3PS
	Conversion
	IDLH
			N.D.See: IDLH INDEX

Exposure Limits
			NIOSH RELTWA 0.2 mg/m3 ST 0.6 mg/m3 [skin]
					OSHA PEL none See Appendix G
	Measurement Methods
			**NIOSH** 5600;**OSHA** 62
					
					See: NMAM or OSHA Methods
										
Physical Description
			Colorless to white, crystalline solid with a mild, mercaptan-like odor.
					[pesticide] [Note: Commercial formulations may be combined with combustible liquids.]													
										
Molecular Weight350.6	
	Boiling Point320°F (Decomposes)
	Melting Point108°F
	Solubility0.0002%
	Vapor Pressure0.00002 mmHg
	Ionization Potential?											
Specific Gravity1.40 (Liquid at 110°F)	
	Flash Point?
	Upper Explosive Limit?
	Lower Explosive Limit?
Combustible Solid
Incompatibilities & Reactivities
			Strong acids, caustics, amines
					[Note: Corrosive to copper & brass.]
Exposure Routes
			inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms
			wheezing, laryngeal spasms, salivation; bluish lips, skin; miosis, blurred vision; nausea, vomiting, abdominal cramps, diarrhea
Target Organs
			respiratory system, central nervous system, peripheral nervous system, plasma 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: 0851

			
							

			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
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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
First Aid Procedures Follow NIOSH Facebook
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