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Diphenyl																				Related Pages
Synonyms & Trade Names
			Biphenyl, Phenyl benzene
CAS No.
			92-52-4
	RTECS No.
			DU8050000
	DOT ID & Guide

FormulaC6H5C6H5
	Conversion
			1 ppm = 6.31 mg/m3
	IDLH
			100 mg/m3See: 92524

Exposure Limits
			NIOSH RELTWA 1 mg/m3 (0.2 ppm)
					OSHA PEL TWA 1 mg/m3 (0.2 ppm)
	Measurement Methods
			**NIOSH** 2530;**OSHA** PV2022
					
					See: NMAM or OSHA Methods
										
Physical Description
			Colorless to pale-yellow solid with a pleasant, characteristic odor.
					[fungicide]													
										
Molecular Weight154.2	
	Boiling Point489°F
	Melting Point156°F
	SolubilityInsoluble
	Vapor Pressure0.005 mmHg
	Ionization Potential7.95 eV											
Specific Gravity1.04	
	Flash Point235°F
	Upper Explosive Limit(311°F): 5.8%
	Lower Explosive Limit(232°F): 0.6%
Combustible Solid
Incompatibilities & Reactivities
			Oxidizers
Exposure Routes
			inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms
			irritation eyes, throat; headache, nausea, lassitude (weakness, exhaustion), numb limbs; liver damage
Target Organs
			Eyes, respiratory system, liver, 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
							**Provide:**Eyewash (molt), Quick drench (molt)
	First Aid
			(See procedures)**Eye:**Irrigate immediately
							**Skin:**Water flush immediately
							**Breathing:**Respiratory support
							**Swallow:**Medical attention immediately
Respirator Recommendations
			**NIOSH/OSHA****Up to 10 mg/m3**: (APF = 10) Any air-purifying half-mask respirator with organic vapor cartridge(s) in combination with an N95, R95, or P95 filter. The following filters may also be used: N99, R99, P99, N100, R100, P100. Click here for information on selection of N, R, or P filters.(APF = 10) Any supplied-air respirator**Up to 25 mg/m3**: (APF = 25) Any supplied-air respirator operated in a continuous-flow mode*(APF = 25) Any powered, air-purifying respirator with an organic vapor cartridge in combination with a high-efficiency particulate filter.***Up to 50 mg/m3**: (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 = 50) Any powered, air-purifying respirator with a tight-fitting facepiece and organic vapor cartridge(s) 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**Up to 100 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 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: 0106
					  MEDICAL TESTS: 0086

			
							

			Page last reviewed:  October 30, 2019						Content
							source: 	National Institute for Occupational Safety and Health NIOSH Pocket Guide to Chemical Hazards
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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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