Label abbreviations descriptions

PROPANE†

Chemical Identification
CAS # 74-98-6
Formula
 

C₃H₈
Synonyms
 

bottled gas; dimethyl methane; n-propane; propyl hydride; LPG

Physical Properties
Physical description Colorless, odorless gas.
Boiling point -44°F Molecular weight 44.1
Freezing point/melting point -306°F Vapor pressure 8.4 atm at 70°F
Flash point -156°F Vapor density 1.55
Specific gravity 0.59 at -58°F Ionization potential 11.07 eV
Lower explosive limit (LEL) 2.1% Upper explosive limit (UEL) 9.5%
NFPA health rating 2 NFPA fire rating 4
NFPA reactivity rating 0 NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs

Monitoring Methods Used by OSHA
Analyte code (IMIS no.) 2150
Sampling group
Sampler/Sampling media 2 tubes, ORBO™ 91 Carbosieve® S-III (130/65) in series [Supelco 20360]
Sampling time*
 

50 min
Sampling volume (TWA)*
 

5 L
Sampling flow rate (TWA)*
 

0.1 L/min
Sampling volume (STEL/Peak/C)*
 

 
Sampling flow rate (STEL/Peak/C)*
 

 
Analytical method instruments GC-FID
Method reference OSHA PV2077 (partially validated)
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.

Bulk/Wipe Method
Wipe Sampler/Sampling media
 

 
Bulk Method
 

 

On-Site Screening Techniques
Device Detector tube Detector tube Detector tube Combustible gas meter CMS Chip
Model/Type Dräger - Hydrocarbons 0.1%/b, CH26101 Gastec 103 Matheson-Kitagawa 8014-125SA Propane, 100-2000 ppm range
Sampling information
(see manufacturer instructions) 		7-15 strokes, approx 0.5 vol-%-1.3 vol-% range, uncertainty 49% 0.5-2 strokes, 0.05-2.4% range, uncertainty 16% follow mfr instructions, approx 0.02-0.5% range NIOSH Manual of Analytic Methods (NIOSH S87), fully validated

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
 

Withdrawn [2013]

 PEL-TWA
 

1000 ppm (1800 mg/m³)
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
 

N
Notes:

See 29 CFR 1910.1000 Table Z-1. Propane is classified as a simple asphyxiant and exposure is also addressed in OSHA Construction and Maritime standards. For OSHA's construction regulations, see 29 CFR 1926.55 Table 1: [E] The limiting factor is the available oxygen which shall be at least 19.5% and be within the requirements addressing explosion in 29 CFR 1926. For OSHA's maritime regulations, see 29 CFR 1915.1000 Table Z-Shipyards: [E] The limiting factor is the available oxygen which shall be at least 18% and be within the requirements addressing explosion in 29 CFR 1915, Subpart B.

 Notes:
 

 

 Notes:
 

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

 Notes:
 

A number of gases and vapors, when present in high concentrations, act primarily as asphyxiants without other adverse effects. A concentration limit is not included for each material because the limiting factor is the available oxygen. (Several of these materials present fire or explosion hazards.)
Health factors:  See NIH-NLM PubChem. IDLH
 

2100 ppm
Carcinogenic classifications: Not listed Notes:
 

10% LEL
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
 

 

Additional Resources and Literature References

Last Updated Date : 01/29/2021