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Chemical Sampling Information (CSI)
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General Description

OSHA IMIS Code Number: 0615

Chemical Abstracts Service (CAS) Registry Number: 7790-91-2

NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: FO2800000

Department of Transportation Regulation Number (49 CFR 172.101) and Guide: 1749 44

Chemical Description and Physical Properties:

greenish-yellow, almost colorless liquid or gas with a sweet, irritating odor
molecular weight: 93
vapor pressure >1 atm
boiling point: 53°F
melting point: -105°F

Incompatibilities Combustible substances, water, sand, glass, asbestos, silicon-containing compounds

Exposure Limits

OSHA Permissible Exposure Limit (PEL):

General Industry: 0.1 ppm, 0.4 mg/m3 ceiling

Construction Industry: 0.1 ppm, 0.4 mg/m3 ceiling

American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV): 0.1 ppm, 0.38 mg/m3 ceiling

National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): 0.1 ppm ceiling

Health Factors

Potential Symptoms: Eye, skin burns; In animals: lacrimation, corneal ulcers; pulmonary edema

Health Effects: Irritation-Eye, Nose, Throat, Skin---Marked (HE14) Mutagen (HE2)

Affected Organs: Skin, eyes

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):

  • sampling media: Midget Fritted Glass Bubbler (MFGB) containing 10 mL 0.01 N NaOH
    maximum volume: 15 Liters
    maximum flow rate: 1.0 L/min (Ceiling)
    current analytical method: Ion Specific Electrode; ISE
    method reference: 2 (OSHA In-House File)
    method classification: Not Validated
    note: Submit as a separate sample. The sample is analyzed for total F- &/or Cl- and reported as the compound. Proposed sampling and analytical method follows OSHA ID-110.

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