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Chemical Sampling Information (CSI)
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General Description

OSHA IMIS Code Number: 1880

Chemical Abstracts Service (CAS) Registry Number: 79-24-3

NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: KI5600000; 33632

Department of Transportation Regulation Number (49 CFR 172.101) and Guide: 2842 129 Flammable Liquid

Chemical Description and Physical Properties:

colorless liquid with a mild, fruity odor
molecular weight: 75
vapor pressure: 15.6 mm
boiling point: 237°F
melting point: -130°F

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

Exposure Limits

OSHA Permissible Exposure Limit (PEL):

General Industry: 100 ppm, 310 mg/m3

Construction Industry: 100 ppm, 310 mg/m3 TWA

American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV): 100 ppm, 307 mg/m3 TWA

National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): 100 ppm TWA

Health Factors

NIOSH Immediately Dangerous To Life or Health Concentration (IDLH):

Potential Symptoms: Dermatitis; In animals: lacrimation; dyspnea, pulmonary rales, edema; liver, kidney injury; narcosis

Health Effects: Irritation-Eye, Nose, Throat, Skin---Moderate (HE15) Narcosis (HE8)

Affected Organs: Skin

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):

  • sampling media: Two XAD-2 tubes in series (First tube 600 mg section, second tube 300 mg section - both 20/50 mesh)
    analytical solvent: Ethyl Acetate
    maximum volume: 3 Liters
    maximum flow rate: 0.05 L/min
    current analytical method: Gas Chromatography; GC/FID
    method reference: 1 (NIOSH 2526 [20 KB PDF, 4 pages])
    sampling and analytical error: 0.10
    method classification: Fully Validated

Secondary Laboratory Sampling/Analytical Method (SAM2):

  • device: Detector Tube
    company: MSA
    part #: 91624
    range: 10-300 ppm, Pyrolyzer required
    class: Mfg

  • device: Instrumentation
    company: Infrared Spectrophotometer
    part #: MIRAN 1A & 1B
    range: 2.1 ppm @ 9.0 um
    class: Mfg

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