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Chemical Sampling Information (CSI)
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General Description

Synonyms: 1,2-Dichloro-1,1,2,2-tetrafluoroethane; Freon 114; sym-Dichlorotetrafluoroethane

OSHA IMIS Code Number: 0900

Chemical Abstracts Service (CAS) Registry Number: 76-14-2

Other Chemical Abstracts Service (CAS) Registry Number: 1320-37-2

NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: KI1101000; 33579

Department of Transportation Regulation Number (49 CFR 172.101) and Guide: UN1958 Non-Flammable Gas

Chemical Description and Physical Properties:
colorless liquid or gas with a very slight, ethereal odor
molecular weight: 171
boiling point: 38°F
vapor pressure: 1444 mm
melting point: -137°F
Incompatibilities: Chemically active metals: sodium, potassium, calcium, powdered aluminum, zinc, magnesium

Exposure Limits

OSHA Permissible Exposure Limit (PEL):
General Industry: 1000 ppm, 7000 mg/m3

Construction Industry: 1000 ppm, 7000 mg/m3 TWA
American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV): 1000 ppm, 6990 mg/m3 TWA; Appendix A4 (Not Classifiable as a Human Carcinogen)

National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): 1000 ppm TWA

Health Factors

Potential Symptoms: Respiratory irritation, asphyxia; cardiac arrhythmias, cardiac arrest

Health Effects: Explosive, Flammable (No adverse effects when Good Housekeeping + Pr (HE18)

Affected Organs: Respiratory system, CVS

NIOSH/OSHA/DOE Health Guideline: Dichlorotetrafluoroethane

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):
  • sampling media: Two Charcoal Tubes in series (First tube 400/200 mg sections, second tube 100/50 mg sections, both tubes 20/40 mesh)
    analytical solvent: Methylene Chloride
    maximum volume: 4 Liters
    maximum flow rate: 0.05 L/min
    current analytical method: Gas Chromatography; GC/FID
    method reference: 1 NIOSH 1018 [22 KB PDF, 4 pages]
    sampling and analytical error: 0.11
    method classification: Fully Validated
Secondary Laboratory Sampling/Analytical Method (SAM2):
  • device: Detector Tube
    company: MSA
    part #: 88536
    range: 200-2000 ppm, Pyrolyzer required
    method classification: Mfg
  • device: Instrumentation
    company: Infrared Spectrophotometer
    part #: MIRAN 1A & 1B
    range: 0.06 ppm @ 8.7 um
    method classification: Mfg
  • device: Instrumentation
    company: Infrared Spectrophotometer
    part #: MIRAN 103
    range: 0-500 ppm @ 8.1 um
    method classification: Mfg
  • device: Instrumentation
    company: Organic Vapor Analyzer
    part #: Organic Vapor Analyzer
    method classification: Mfg
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