1,1-DICHLOROETHANE (ETHYLIDENE CHLORIDE)†

Chemical Identification
CAS # 75-34-3
Formula
 

C₂H₄Cl₂

Synonyms
 

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

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
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
Sampler/Sampling media
 

 

Bulk Method
Bulk Method
 

 

On-Site Screening Techniques
Device
Model/Type
Sampling information
(see manufacturer instructions)
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:
 

 

Last Updated Date : 12/14/2020