DICHLOROTETRAFLUOROETHANE†

Chemical Identification
Chemical Identification
CAS # 76-14-2, 1320-37-2 (mixed isomers)
Formula

C₂Cl₂F₄

Synonyms

1,2-dichlorotetrafluoroethane; Freon114; Genetron114; Halon242; Refrigerant 114

Physical Properties
Physical Properties
Physical description Colorless gas with a faint, ether-like odor at high concentrations.
Boiling point 38°F Molecular weight 170.9
Freezing point/melting point -137°F Vapor pressure 1.9 atm at 70°F
Flash point Vapor density 1.455
Specific gravity Ionization potential 12.20 eV
Lower explosive limit (LEL) Upper explosive limit (UEL)
NFPA health rating NFPA fire rating
NFPA reactivity rating NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs
Monitoring Methods Used by OSHA
Monitoring Methods Used by OSHA
Analyte code (IMIS no.) 0900
Sampling group
Sampler/Sampling media 2 CSC tubes (100/50 mg sections, 20/40 mesh) in series [SKC 226-01]
Sampling time*
Sampling volume (TWA)*

1-4 L

Sampling flow rate (TWA)*

0.01-0.05 L/min

Sampling volume (STEL/Peak/C)*
Sampling flow rate (STEL/Peak/C)*
Analytical method instruments GC-FID
Method reference NIOSH 1018 (fully validated)
Notes
Special requirements

* All sampling instructions above are recommended guidelines for OSHA Compliance Safety and Health Officers (CSHOs), please see the corresponding OSHA method reference for complete details.

Wipe Method
Wipe Method
Sampler/Sampling media
Bulk Method
Bulk Method
On-Site Screening Techniques
On-Site Screening Techniques
Device Infrared spectrophotometer Infrared spectrophotometer Organic vapor analyzer
Model/Type Miran 1A & 1B Miran 103
Sampling information
(see manufacturer instructions)
0.06 ppm@8.7 µm 0-500 ppm@8.1 µm range
Exposure Limits
Exposure Limits
OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
NIOSH REL
Up to 10-hour TWA
(ST) STEL
(C) Ceiling
ACGIH TLV©
8-hour TWA
(ST) STEL
(C) Ceiling
CAL/OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
PEL-TWA

1000 ppm (7000 mg/m³)

REL-TWA

1000 ppm (7000 mg/m³)

TLV-TWA

1000 ppm [1979]

PEL-TWA

1000 ppm (7000 mg/m³)

PEL-STEL REL-STEL TLV-STEL PEL-STEL
PEL-C REL-C TLV-C PEL-C
Skin notation

N

Skin notation

N

Skin notation

N

Skin notation

N

Notes:

See 29 CFR 1910.1000 Table Z-1.

Notes: Notes: Notes:
Health factors:  See NIH-NLM PubChem. IDLH

15,000 ppm

Carcinogenic classifications: TLV-A4 Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
Additional Resources and Literature References
Additional Resources and Literature References

NOAA: CAMEO Chemicals - 1,2-Dichloro-1,1,2,2-tetrafluoroethane

NIOSH: Pocket Guide to Chemical Hazards - Dichlorotetrafluoroethane

Literature References

  • ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Dichlorotetrafluoroethane. See annual publication for most recent 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.

Last Updated Date : 01/29/2021