1,1,2,2-TETRACHLOROETHANE

Chemical Identification
Chemical Identification
CAS # 79-34-5
Formula

C₂H₂Cl₄

Synonyms

acetylene tetrachloride; tetrachloroethane; 1,1-dichloro-2,2-dichloroethane

Physical Properties
Physical Properties
Physical description Colorless to pale yellow liquid with a sweet odor.
Boiling point 295°F Molecular weight 167.86
Freezing point/melting point -33°F Vapor pressure 14 mmHg at 77°F
Flash point Vapor density 5.79
Specific gravity 1.595 Ionization potential 11.10 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.) 2340
Sampling group
Sampler/Sampling media solid sorbent tube (petroleum charcoal, 100/50 mg)
Sampling time*
Sampling volume (TWA)*

0.01 - 0.2 L/min

Sampling flow rate (TWA)*

3 L @ 5 ppm - 30 L

Sampling volume (STEL/Peak/C)*
Sampling flow rate (STEL/Peak/C)*
Analytical method instruments GC-FID
Method reference NIOSH 1019 (partially 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
Model/Type
Sampling information
(see manufacturer instructions)
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

5 ppm (35 mg/m³)

REL-TWA

1 ppm (7 mg/m³)

TLV-TWA

1 ppm [1995]

PEL-TWA
 

1 ppm (7 mg/m³)

PEL-STEL REL-STEL TLV-STEL PEL-STEL
 

 

PEL-C REL-C TLV-C PEL-C
 

 

Skin notation

Y

Skin notation

Y

Skin notation
 

Y

Skin notation
 

Y

Notes:

See 29 CFR 1910.1000 Table Z-1.

Notes:

CARCINOGEN (Ca): REDUCE EXPOSURE TO LOWEST FEASIBLE CONCENTRATION. See Appendix A, NIOSH Potential Occupational Carcinogens.

Notes:
 

 

Notes:
 

 

Health factors:  See NIH-NLM PubChem. IDLH
 

100 ppm [Ca]

Carcinogenic classifications: TLV-A3 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 - 1,1,2,2-Tetrachloroethane

NIOSH: Pocket Guide to Chemical Hazards - 1,1,2,2-Tetrachloroethane

Literature References

 
  • ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - 1,1,2,2-Tetrachloroethane. 2018.

Last Updated Date : 01/29/2021