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Chemical Sampling Information (CSI)
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General Description

Synonyms: 2,2-Dichloro-1,1-difluoro-1-methoxyethane; Penthrane Pentran; Pentrane; 2,2-Dichloro-1,1-difluoroethyl methyl ether; Methflurane; Methoxflurane

OSHA IMIS Code Number: 1647

Chemical Abstracts Service (CAS) Registry Number: 76-38-0

NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: KN7820000; 34945

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

Chemical Description and Physical Properties:

molecular weight: 164.97
molecular formula: C3H4C12F2O

Exposure Limits

National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): 2 ppm Ceiling

Health Factors

Carcinogenic Classification:

International Agency for Research on Cancer (IARC): Anaesthetics, volatile - Group 3, not classifiable as to its carcinogenicity to humans

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):

  • sampling media: Two Charcoal Tubes in series (100/50 mg sections, 20/40 mesh)
    analytical solvent: Carbon Disulfide
    maximum volume: 10 Liters
    maximum flow rate: 0.1 L/min
    current analytical method: Gas Chromatography; GC/FID
    method reference: 2 (OSHA In-House File)
    method classification: Not Validated

Secondary Laboratory Sampling/Analytical Method (SAM2):

  • device: Instrumentation
    company: Infrared Spectrophotometer
    part #: MIRAN 1A & 1B
    range #: 0.2 ppm @ 12.0 um
    class: Mfg

  • device: Instrumentation
    company: Infrared Spectrophotometer
    part #: MIRAN 103
    range #: 0-10 ppm @ 12.0 um
    class: Mfg

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