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Chemical Sampling Information (CSI)
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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 of Chemical Substances (RTECS) Identification Number: SE7545000; 55311

Department of Transportation Regulation Number (49 CFR 172.101) and Guide: UN1075 Flammable Gas

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): 1000 ppm, 1800 mg/m3 TWA

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):

  • sampling media: Combustible Gas Meter

Secondary Laboratory Sampling/Analytical Method (SAM2):

  • device: Detector Tube
    company:
    Gastec
    part #: 100A
    range:
    0.02-0.8%
    class: Mfg

  • device: Instrumentation
    company:
    Infrared Spectrophotometer
    part #: MIRAN 1A & 1B
    range: 0.3 ppm @ 3.4 um
    class: Mfg

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