1,1-DICHLOROETHANE (ETHYLIDENE CHLORIDE)†

Chemical Identification
Chemical Identification
CAS # 75-34-3
Formula
 

C₂H₄Cl₂

Synonyms
 

asymmetrical dichloroethane; ethylidene chloride; 1,1-ethylidene dichloride

Physical Properties
Physical Properties
Physical description Colorless, oily liquid with a chloroform-like odor.
Boiling point 135°F Molecular weight 99
Freezing point/melting point -143°F Vapor pressure 182 mmHg at 68°F
Flash point 22°F Vapor density 3.44
Specific gravity 1.18 Ionization potential 11.06 eV
Lower explosive limit (LEL) 5.4% Upper explosive limit (UEL) 11.4%
NFPA health rating 1 NFPA fire rating 3
NFPA reactivity rating 0 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.) 1160
Sampling group
Sampler/Sampling media CSC tube (100/50 mg) [SKC 226-01]
Sampling time*
 

 

Sampling volume (TWA)*
 

10 L

Sampling flow rate (TWA)*
 

0.01-0.2 L/min

Sampling volume (STEL/Peak/C)*
 

 

Sampling flow rate (STEL/Peak/C)*
 

 

Analytical method instruments GC-FID
Method reference NIOSH 1003 (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
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
 

100 ppm (400 mg/m³)

REL-TWA
 

100 ppm (400 mg/m³)

TLV-TWA
 

100 ppm [1990]

PEL-TWA
 

100 ppm (400 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:
 

See Appendix C, Supplementary Exposure Limits (Chloroethanes).

Notes:
 

 

Notes:
 

 

Health factors:  See NIH-NLM PubChem. IDLH
 

3000 ppm

Carcinogenic classifications: TLV-A4, EPA-C 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-Dichloroethane

NIOSH: Pocket Guide to Chemical Hazards - 1,1-Dichloroethane

Literature References

 
  • ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - 1,1-Dichloroethane. See annual publication for most recent information.
  • International Chemical Safety Cards (WHO/IPCS/ILO): 1,1-Dichloroethane.
  • EPA Air Toxics Website: Ethylidene Dichloride (1,1-Dichloroethane). U.S. Environmental Protection Agency Technology Transfer Network.
  • Muralidhara, S., Ramanathan, R., Mehta, S.M., Lash, L.H., Acosta, D. and Bruchner, J.V: Acute, subacute, and chronic oral toxicity studies of 1,1-dichloroethane in rats: application to risk evaluation. Toxicol. Sci. 64(1): 135-145, 2001.
  • Pohanish, R.P. (editor): Dichlorobenzenes. In, Sittig's Handbook of Toxic and Hazardous Chemicals and Carcinogens, Fourth Ed., Vol. 1. Norwich, NY: Noyes Publications, William Andrew Publishing, 2002, pp. 799-804.

Last Updated Date : 12/14/2020