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Propane

Synonyms & Trade Names
Bottled gas, Dimethyl methane, n-Propane, Propyl hydride
CAS No.
74-98-6
RTECS No.
TX2275000
DOT ID & Guide
1075 115
1978 115
Formula
CH3CH2CH3
Conversion
1 ppm = 1.80 mg/m3
IDLH
2100 ppm [10%LEL]
See: 74986
Exposure Limits
NIOSH REL
TWA 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 Weight
44.1
Boiling Point
-44°F
Freezing Point
-306°F
Solubility
0.01%
Vapor Pressure
(70°F): 8.4 atm
Ionization Potential
11.07 eV
Flash Point
NA (Gas)
Upper Exposive Limit
9.5%
Lower Explosive Limit
2.1%
Relative Gas Density
1.55
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
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