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General Description

  • Synonyms: LPG; Bottled gas; Liquified Petroleum Gas; (see related, Propane)
  • OSHA IMIS Code Number: 1803
  • Chemical Abstracts Service (CAS) Registry Number: 68476-85-7
  • NIOSH Registry of Toxic Effects (RTECS) Identification Number: SE7545000; 55311
  • Department of Transportation Regulation Number (49 CFR 172.101) and Emergency Response Guidebook: 1075 115
  • Chemical Description and Physical Properties:
    • colorless, odorless gas (foul-smelling odorant added)
    • molecular weight: 42 to 58
    • vapor pressure: 2.1 to 8.6 atm
    • boiling point: -40°F to 31°F
  • Incompatibilities: Strong oxidizers

Exposure Limits

  • OSHA Permissible Exposure Limit (PEL):
    • General Industry: 1000 ppm (1800 mg/m3)
    • Construction Industry: 1000 ppm (1800 mg/m3) TWA
  • American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV) (2017): See Appendix F: Minimal Oxygen Content
  • National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): 1000 ppm TWA

Health Factors

  • Potential symptoms: Lightheadedness, drowsiness
  • Health Effects: Explosive (HE18); Asphyxiants (HE17); Narcosis (HE8)
  • Affected Organs: Respiratory system, CNS

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):
  • Combustible Gas Meter
On-Site Sampling Techniques/Methods:
  • Detector Tube
  • company: Gastec
  • part #: 100A
  • range: 0.02-0.8%
  • class: Mfg
  • Instrumentation
  • company: Infrared Spectrophotometer
  • part #: MIRAN 1A & 1B
  • range: 0.3 ppm @ 3.4 µm
  • class: Mfg

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