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Phenyl ether-biphenyl mixture (vapor)																				Related Pages
Synonyms & Trade Names
			Diphenyl oxide-diphenyl mixture, Dowtherm® A
CAS No.
			8004-13-5
	RTECS No.
			DV1500000
	DOT ID & Guide

FormulaC6H5OC6H5/​C6H5C6H5
	Conversion
			1 ppm = 6.79 mg/m3 (approx)
	IDLH
			10 ppmSee: 8004135

Exposure Limits
			NIOSH RELTWA 1 ppm (7 mg/m3)
					OSHA PEL TWA 1 ppm (7 mg/m3)
	Measurement Methods
			**NIOSH** 2013
					
					See: NMAM or OSHA Methods
										
Physical Description
			Colorless to straw-colored liquid or solid (below 54°F) with a disagreeable, aromatic odor.
					[Note: A mixture typically contains 75% phenyl ether & 25% biphenyl.]													
										
Molecular Weight166 (approx)	
	Boiling Point495°F
	Freezing Point54°F
	SolubilityInsoluble
	Vapor Pressure(77°F): 0.08 mmHg
	Ionization Potential?											
Specific Gravity(77°F): 1.06	
	Flash Point239°F
	Upper Explosive Limit?
	Lower Explosive Limit?
Class IIIB Combustible Liquid: Fl.P. at or above 200°F.
Incompatibilities & Reactivities
			Strong oxidizers
Exposure Routes
			inhalation, skin and/or eye contact
Symptoms
			irritation eyes, nose, skin; nausea
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
	First Aid
			(See procedures)**Eye:**Irrigate immediately
							**Skin:**Soap wash promptly
							**Breathing:**Respiratory support
Respirator Recommendations
			**NIOSH/OSHA****Up to 10 ppm**: (APF = 25) Any supplied-air respirator operated in a continuous-flow mode£(APF = 50) Any air-purifying full-facepiece respirator equipped with organic vapor cartridge(s) in combination with an N100, R100, or P100 filter. Click here for information on selection of N, R, or P filters.(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.(APF = 25) Any powered, air-purifying respirator with an organic vapor cartridge in combination with a high-efficiency particulate filter.£(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

			
							

			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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