NIOSH Pocket Guide to Chemical Hazards


CAS 68476-85-7


RTECS SE7545000
Synonyms & Trade Names
Bottled gas, Compressed petroleum gas, Liquefied hydrocarbon gas, Liquefied petroleum gas, LPG [Note: A fuel mixture of propane, propylene, butanes & butylenes.]
DOT ID & Guide
1075 115


NIOSH REL: TWA 1000 ppm (1800 mg/m3)
OSHA PEL: TWA 1000 ppm (1800 mg/m3)
IDLH 2000 ppm [10%LEL] See: 68476857 Conversion 1 ppm = 1.72-2.37 mg/m3
Physical Description
Colorless, noncorrosive, odorless gas when pure. [Note: A foul-smelling odorant is usually added. Shipped as a liquefied compressed gas.]
MW: 42-58
BP: >-44°F
FRZ: ?
Sol: Insoluble
VP: >1 atm
IP: 10.95 eV
RGasD: 1.45-2.00

Fl.P: NA (Gas)
UEL: 9.5% (Propane) 8.5% (Butane)
LEL: 2.1% (Propane) 1.9% (Butane)

Flammable Gas
Incompatibilities & Reactivities
Strong oxidizers, chlorine dioxide
Measurement Methods
NIOSH S93 (II-2)
See: NMAM or OSHA Methods
Personal Protection & Sanitation (See protection)
Skin: Frostbite
Eyes: Frostbite
Wash skin: No recommendation
Remove: When wet (flammable)
Change: No recommendation
Provide: Frostbite wash
First Aid (See procedures)
Eye: Irrigate immediately (liquid)
Skin: Water flush immediately (liquid)
Breathing: Respiratory support

Important additional information about respirator selection
Respirator Recommendations NIOSH/OSHA
Up to 2000 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
Exposure Routes inhalation, skin and/or eye contact (liquid)
Symptoms Dizziness, drowsiness, asphyxia; liquid: frostbite
Target Organs respiratory system, central nervous system