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Propane																				Related Pages
Synonyms & Trade Names
			Bottled gas, Dimethyl methane, n-Propane, Propyl hydride
CAS No.
			74-98-6
	RTECS No.
			TX2275000
	DOT ID & Guide
			1075 1151978 115

FormulaCH3CH2CH3
	Conversion
			1 ppm = 1.80 mg/m3
	IDLH
			2100 ppm [10%LEL]See: 74986

Exposure Limits
			NIOSH RELTWA 1000 ppm (1800 mg/m3)
					OSHA PEL TWA 1000 ppm (1800 mg/m3)
	Measurement Methods
			**NIOSH** S87 (II-2);**OSHA** PV2077
					
					See: NMAM or OSHA Methods
										
Physical Description
			Colorless, odorless gas.
					[Note: A foul-smelling odorant is often added when used for fuel purposes. Shipped as a liquefied compressed gas.]													
										
Molecular Weight44.1	
	Boiling Point-44°F
	Freezing Point-306°F
	Solubility0.01%
	Vapor Pressure(70°F): 8.4 atm
	Ionization Potential11.07 eV											
Flash PointNA (Gas)
	Upper Explosive Limit9.5%
	Lower Explosive Limit2.1%
	Relative Gas Density1.55
Flammable Gas
Incompatibilities & Reactivities
			Strong oxidizers
Exposure Routes
			inhalation, skin and/or eye contact (liquid)
Symptoms
			dizziness, confusion, excitation, asphyxia; liquid: frostbite
Target Organs
			central nervous system
										
Personal Protection/Sanitation
			(See protection codes) **Skin:**Frostbite
							**Eyes:**Frostbite
							**Wash skin:**No recommendation
							**Remove:**When wet (flammable)
							**Change:**No recommendation
							**Provide:**Frostbite wash
	First Aid
			(See procedures)**Eye:**Frostbite
							**Skin:**Frostbite
							**Breathing:**Respiratory support
Respirator Recommendations
			**NIOSH/OSHA****Up to 2100 ppm**: (APF = 10) Any supplied-air respirator(APF = 50) Any self-contained breathing apparatus 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:** Any appropriate escape-type, self-contained breathing apparatus
				Important additional information about respirator selection
See also
			INTRODUCTION
					  ICSC CARD: 0319

			
							

			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
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