LIQUIFIED PETROLEUM GAS (L.P.G.)†

Chemical Identification
Chemical Identification
CAS # 68476-85-7
Formula

C₃H₈/C₃H₆/C₄H₁₀/C₄H₈

Synonyms

bottled gas; compressed petroleum gas; liquefied hydrocarbon gas

Physical Properties
Physical Properties
Physical description Colorless, noncorrosive, odorless gas when pure.
Boiling point >-40°F Molecular weight 42-58
Freezing point/melting point Vapor pressure >1 atm
Flash point varies - propane: -156° F (cc); butane: -76° F (cc) Vapor density 1.45-2.00
Specific gravity 0.51-0.58 at -58°F Ionization potential 10.95 eV
Lower explosive limit (LEL) 2.1% (Propane) 1.9% (Butane) Upper explosive limit (UEL) 9.5% (Propane) 8.5% (Butane)
NFPA health rating NFPA fire rating
NFPA reactivity rating NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs
Monitoring Methods Used by OSHA
Monitoring Methods Used by OSHA
Analyte code (IMIS no.)
Sampling group
Sampler/Sampling media
Sampling time*
Sampling volume (TWA)*
Sampling flow rate (TWA)*
Sampling volume (STEL/Peak/C)*
Sampling flow rate (STEL/Peak/C)*
Analytical method instruments
Method reference
Notes
Special requirements

* All sampling instructions above are recommended guidelines for OSHA Compliance Safety and Health Officers (CSHOs), please see the corresponding OSHA method reference for complete details.

Wipe Method
Wipe Method
Sampler/Sampling media
Bulk Method
Bulk Method
On-Site Screening Techniques
On-Site Screening Techniques
Device Combustible gas meter Detector tube Infrared spectrophotometer
Model/Type Gastec 100A Miran 1A & 1B
Sampling information
(see manufacturer instructions)
0.02-0.8% range 0.3 ppm@3.4 µm
Exposure Limits
Exposure Limits
OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
NIOSH REL
Up to 10-hour TWA
(ST) STEL
(C) Ceiling
ACGIH TLV©
8-hour TWA
(ST) STEL
(C) Ceiling
CAL/OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
PEL-TWA

1000 ppm (1800 mg/m³)

REL-TWA

1000 ppm (1800 mg/m³)

TLV-TWA PEL-TWA
PEL-STEL REL-STEL TLV-STEL PEL-STEL
PEL-C REL-C TLV-C PEL-C
Skin notation

N

Skin notation

N

Skin notation

N

Skin notation

NA

Notes:

See 29 CFR 1910.1000 Table Z-1.

Notes: Notes:

See Appendix F: Minimal Oxygen Content. L.P.G. is listed as a simple asphyxiant and explosion hazard.

Notes:

Not established

Health factors:  See NIH-NLM PubChem. IDLH

2000 ppm

Carcinogenic classifications: Not listed Notes:

10% of LEL

AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
Additional Resources and Literature References
Additional Resources and Literature References

NOAA: CAMEO Chemicals - Liquefied petroleum gas

NIOSH: Pocket Guide to Chemical Hazards - L.P.G.

Literature References

  • ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - L.P.G. (Liquified petroleum gas). See annual publication for most recent information.

Last Updated Date : 01/04/2021