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Chemical Sampling Information (CSI)
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General Description

Synonyms: Hydrofluoroether-7100 (HFE-7100)

OSHA IMIS Code Number: P451

Chemical Abstracts Service (CAS) Registry Number: 163702-07-6 (methyl nonafluorobutyl ether); 163702-08-7 (methyl nonafluoroisobutyl ether)

Chemical Description and Physical Properties:

clear, colorless liquid with a slight ethereal odor
molecular weight: 250.06
molecular formula: C4F9OCH3

Incompatibilities: This is a mixture containing approximately 40% methyl nonafluorobutyl ether and approximately 60% methyl nonafluoroisobutyl ether. Other physical properties vary according to the isomer

Health Factors

Health Effects: Eye irritation

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):

  • sampling media: Anasorb CMS (150/75 mg sections)
    analytical solvent: (99:1) Carbon disulfide:dimethylformamide
    maximum volume: 1 Liter
    maximum flow rate: 0.05 L/min
    current analytical method: Gas Chromatography; GC/FID
    method reference: OSHA Salt Lake Technical Center In-House File
    method classification: Not Validated
    note: Samples should be refrigerated after sampling, sent to the lab as soon as possible, and analyzed within 5 days after sampling.

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