# NIOSH Pocket Guide to Chemical Hazards
L.P.G. | CAS 68476-85-7
C3H8/C3H6/C4H10/C4H8 | 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
Exposure Limits | NIOSH REL: TWA 1000 ppm (1800 mg/m3)
OSHA PEL: TWA 1000 ppm (1800 mg/m3)
IDLH 2000 ppm [10%LEL] | 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)
Personal Protection & Sanitation Skin: Frostbite Eyes: Frostbite Wash skin: No recommendation Remove: When wet (flammable) Change: No recommendation Provide: Frostbite | First Aid (See procedures) Eye: Irrigate immediately (liquid) Skin: Water flush immediately (liquid) Breathing: Respiratory support
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
See also: INTRODUCTION