Label abbreviations descriptions

1,2-DICHLOROETHYLENE, MIXED ISOMERS (ACETYLENE DICHLORIDE)†

Chemical Identification
CAS # 540-59-0
Formula

C₂H₂Cl₂
Synonyms

acetylene dichloride; cis-acetylene dichloride; trans-acetylene dichloride; sym-dichloroethylene

Physical Properties
Physical description Colorless liquid (usually a mixture of the cis & trans isomers) with a slightly acrid, chloroform-like odor.
Boiling point 118-140°F Molecular weight 97.0
Freezing point/melting point -57 to -115°F Vapor pressure 180-265 mmHg
Flash point 36-39°F Vapor density 3.34
Specific gravity 1.27 Ionization potential 9.65 eV
Lower explosive limit (LEL) 5.6% Upper explosive limit (UEL) 12.8%
NFPA health rating 1 NFPA fire rating 3
NFPA reactivity rating 2 NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs

Monitoring Methods Used by OSHA
Analyte code (IMIS no.) 0870
Sampling group
Sampler/Sampling media CSC tube (100/50 mg) [SKC 226-01]
Sampling time*
Sampling volume (TWA)*

3 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 (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.

Bulk/Wipe Method
Wipe Sampler/Sampling media
Bulk Method

On-Site Screening Techniques
Device Detector tube Detector tube Detector tube
Model/Type Matheson-Kitagawa 8014-145S Matheson-Kitagawa 8014-180S Gastec 139
Sampling information
(see manufacturer instructions) 		follow mfr instructions; approx 1-400 ppm range follow mfr instructions; approx 2-1000 ppm range 0.5-2 strokes; 1-250 ppm range; 16.4% for 10-20 ppm, 8.2% for 20-100 ppm

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

200 ppm (790 mg/m³)

 REL-TWA

200 ppm (790 mg/m³)

 TLV-TWA PEL-TWA

200 ppm (790 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:

Visit the ACGIH TLV site for specific data

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

1000 ppm
Carcinogenic classifications: Not listed Notes:
 

 
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
 

 

Additional Resources and Literature References

Last Updated Date : 03/25/2024