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Chemical Sampling Information (CSI)
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General Description

OSHA IMIS Code Number: 1940

Chemical Abstracts Service (CAS) Registry Number: 108-03-2

NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: TZ5075000; 66050

Department of Transportation Regulation Number (49 CFR 172.101) and Guide: UN2608 Flammable Liquid

Chemical Description and Physical Properties:

colorless liquid with a mild, fruity odor
molecular weight:
89
vapor pressure: 7.5 mm
boiling point: 268°F
melting point: -162°F

Incompatibilities: Amines, strong acids, alkalies; strong oxidizers; hydrocarbons, other combustibles, metal oxides

Exposure Limits

OSHA Permissible Exposure Limit (PEL):

General Industry: 25 ppm, 90 mg/m3

Construction Industry: 25 ppm, 90 mg/m3 TWA

American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV): 25 ppm, 91 mg/m3 TWA; Appendix A4 (Not Classifiable as a Human Carcinogen)

National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): 25 ppm TWA

Health Factors

Potential Symptoms: Eye irritation; headaches; nausea, vomiting, diarrhea

Health Effects: Irritation-Eye, Nose, Throat, Skin---Moderate (HE15) Cumulative liver and kidney damage (HE3)

Affected Organs: Eyes, CNS

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):

  • sampling media: XAD-4 Tube (80/40 mg sections)
    analytical solvent: Carbon Disulfide
    maximum volume: 4 Liters
    maximum flow rate: 0.1 L/min
    current analytical method: Gas Chromatography; GC/FID
    method reference: 2 (OSHA 46)
    sampling analytical error: 0.12
    method classification: Fully Validated

Secondary Laboratory Sampling/Analytical Method (SAM2):

  • device: Detector Tube
    company:
    MSA
    part #: 91624
    range:
    2-100 ppm, Pyrolyzer required
    class: Mfg

  • device: Instrumentation
    company:
    Organic Vapor Analyzer
    part #: Organic Vapor Analyzer
    class: Mfg

  • device: Instrumentation
    company:
    Infrared Spectrophotometer
    part #: MIRAN 1A & 1B
    range: 4.8 ppm @ 12.5 um
    class: Mfg

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