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National Institute for Occupational Safety and Health
NIOSH Publication 2005-149         September 2005         Propane NIOSH Pocket Guide# 0524             Search

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.]
MW:
44.1
BP:
-44°F
FRZ:
-306°F
Sol:
0.01%		 VP(70°F): 8.4 atm
IP:
11.07 eV
Fl.P:
NA (Gas)
UEL:
9.5%
LEL:
2.1%
RGasD:
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   See ICSC CARD: 0319