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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

Additional Information:

  • Occupational Health Guidelines for Chemical Hazards. US Department of Health and Human Services (DHHS), National Institute for Occupational Safety and Health (NIOSH) Publication No. 81-123, (1981, January). Provides a table of contents of guidelines for many hazardous chemicals. The files provide technical chemical information, including chemical and physical properties, health effects, exposure limits, and recommendations for medical monitoring, personal protective equipment (PPE), and control procedures.
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
    class: Mfg
  • device: Instrumentation
    company: Infrared Spectrophotometer
    part #: MIRAN 1A & 1B
    range: 0.06 ppm @ 8.7 um
    class: Mfg
  • device: Instrumentation
    company: Infrared Spectrophotometer
    part #: MIRAN 103
    range: 0-500 ppm @ 8.1 um
    class: Mfg
  • device: Instrumentation
    company: Organic Vapor Analyzer
    part #: Organic Vapor Analyzer
    class: Mfg
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