1,2-Dichloroethylene

Synonyms & Trade Names
Acetylene dichloride, cis-Acetylene dichloride, trans-Acetylene dichloride, sym-Dichloroethylene
CAS No.
540-59-0
RTECS No.
DOT ID & Guide
1150 130P
Formula
ClCH=CHCl
Conversion
1 ppm = 3.97 mg/m3
IDLH
1000 ppm
See: 540590
Exposure Limits
NIOSH REL
TWA 200 ppm (790 mg/m3)
OSHA PEL
TWA 200 ppm (790 mg/m3)
Measurement Methods
NIOSH 1003;
OSHA 7
See: NMAM or OSHA Methods
Physical Description
Colorless liquid (usually a mixture of the cis & trans isomers) with a slightly acrid, chloroform-like odor.
Molecular Weight
97.0
Boiling Point
118-140°F
Freezing Point
-57 to -115°F
Solubility
0.4%
Vapor Pressure
180-265 mmHg
Ionization Potential
9.65 eV
Specific Gravity
(77°F): 1.27
Flash Point
36-39°F
Upper Exposive Limit
12.8%
Lower Explosive Limit
5.6%
Class IB Flammable Liquid: Fl.P. below 73°F and BP at or above 100°F.
Incompatibilities & Reactivities
Strong oxidizers, strong alkalis, potassium hydroxide, copper [Note: Usually contains inhibitors to prevent polymerization.]
Exposure Routes
inhalation, ingestion, skin and/or eye contact
Symptoms
irritation eyes, respiratory system; central nervous system depression
Target Organs
Eyes, respiratory system, central nervous system
Personal Protection/Sanitation
(See protection codes)
Skin:Prevent skin contact
Eyes:Prevent eye contact
Wash skin:When contaminated
Remove:When wet (flammable)
Change:No recommendation
First Aid
(See procedures)
Eye:Irrigate immediately
Skin:Soap wash promptly
Breathing:Respiratory support
Swallow:Medical attention immediately
Respirator Recommendations

NIOSH/OSHA

Up to 1000 ppm:
(APF = 25) Any supplied-air respirator operated in a continuous-flow mode£
(APF = 25) Any powered, air-purifying respirator with organic vapor cartridge(s)£
(APF = 50) Any chemical cartridge respirator with a full facepiece and organic vapor cartridge(s)
(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted organic vapor canister
(APF = 50) Any self-contained breathing apparatus with a full facepiece
(APF = 50) Any supplied-air respirator with a full facepiece

Emergency or planned entry into unknown concentrations or IDLH conditions:
(APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode
(APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus

Escape:
(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted organic vapor canister
Any appropriate escape-type, self-contained breathing apparatus

Important additional information about respirator selection

See also
INTRODUCTION   ICSC CARD: 0436
Page last reviewed: November 29, 2018