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Dibutyl phosphate																				Related Pages
Synonyms & Trade Names
			Dibutyl acid o-phosphate, Di-n-butyl hydrogen phosphate, Dibutyl phosphoric acid
CAS No.
			107-66-4
	RTECS No.
			TB9605000
	DOT ID & Guide

Formula(C4H9O)2(OH)PO
	Conversion
			1 ppm = 8.60 mg/m3
	IDLH
			30 ppmSee: 107664

Exposure Limits
			NIOSH RELTWA 1 ppm (5 mg/m3) ST 2 ppm (10 mg/m3)
					OSHA PEL TWA 1 ppm (5 mg/m3) See Appendix G
	Measurement Methods
			**NIOSH** 5017
					
					See: NMAM or OSHA Methods
										
Physical Description
			Pale-amber, odorless liquid.													
										
Molecular Weight210.2	
	Boiling Point212°F (Decomposes)
	Freezing Point?
	SolubilityInsoluble
	Vapor Pressure1 mmHg (approx)
	Ionization Potential?											
Specific Gravity1.06	
	Flash Point?
	Upper Explosive Limit?
	Lower Explosive Limit?
Combustible Liquid
Incompatibilities & Reactivities
			Strong oxidizers
Exposure Routes
			inhalation, ingestion, skin and/or eye contact
Symptoms
			irritation eyes, skin, respiratory system; headache
Target Organs
			Eyes, skin, respiratory 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:**No recommendation
							**Provide:**Quick drench
	First Aid
			(See procedures)**Eye:**Irrigate immediately
							**Skin:**Soap wash promptly
							**Breathing:**Respiratory support
							**Swallow:**Medical attention immediately
Respirator Recommendations
			**NIOSH/OSHA****Up to 10 ppm**: (APF = 10) Any supplied-air respirator**Up to 25 ppm**: (APF = 25) Any supplied-air respirator operated in a continuous-flow mode**Up to 30 ppm**: (APF = 50) Any supplied-air respirator that has a tight-fitting facepiece and is operated in a continuous-flow mode(APF = 50) Any self-contained breathing apparatus with a full facepiece(APF = 50) Any supplied-air respirator with a full facepiece**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 organic vapor canister 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: 1278
					  MEDICAL TESTS: 0070

			
							

			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
First Aid Procedures Follow NIOSH Facebook
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