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Chemical Sampling Information (CSI)
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General Description

Synonyms: Carbon difluoride oxide, Carbon fluoride oxide, Carbon oxyfluoride, Carbonyl difluoride, Fluoroformyl fluoride, Fluorophosgene

OSHA IMIS Code Number: C105

Chemical Abstracts Service (CAS) Registry Number: 353-50-4

NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: FG6125000

Department of Transportation Regulation Number (49 CFR 172.101) and Guide: 2417 125

NIOSH Pocket Guide to Chemical Hazards, Carbonyl fluoride: chemical description, physical properties, potentially hazardous incompatibilities, and more

Chemical Description and Physical Properties:

colorless gas with a pungent and very irritating odor

Exposure Limits

American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV): 2 ppm, 5.4 mg/m3 TWA; 5 ppm, 13 mg/m3 STEL

National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): 2 ppm TWA; 5 ppm STEL


Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):

  • sampling media: Midget Fritted Glass Bubbler containing 10 mL 0.1 N NaOH
    maximum volume: 480 Liters
    maximum flow rate: 2.0 L/min (TWA)
    maximum volume: 30 Liters
    maximum flow rate: 2.0 L/min (STEL)
    current analytical method: Ion Specific Electrode; ISE
    method reference: 2 (OSHA In-House File)
    method classification: Not Validated
    note: Submit as a separate sample; analyte hydrolyzes instantly to fluoride in water. Analysis is for total F-. Proposed method + follows OSHA method ID-110.

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