1,2-Dichloroethylene

  • Acetylene dichloride
  • Dioform
  • 1,2-Dichloroethene
Formula
ClCH=CHCl
Structure
Description
Mobile liquid. Ethereal, slightly acrid.
Uses
Used as a solvent for waxes, resins, and acetylcellulose. It is also used in the extraction of rubber, as a refrigerant, in the manufacture of pharmaceuticals and artificial pearls and in the extraction of oils and fats from fish and meat. 1,2-Dichloroethylene.

Registry Numbers and Inventories.
CAS
540-59-0
EC (EINECS/ELINCS)
208-750-2
EC Index Number
602-026-00-3
EC Class
Highly flammable; Harmful; Dangerous for the Environment
RTECS
KV9360000
RTECS class
Mutagen; Primary Irritant
UN (DOT)
1150
Merck
12,93
Beilstein/Gmelin
1719345
Beilstein Reference
2-01-00-00158
RCRA
U079
Swiss Giftliste 1
G-1522
Canada DSL/NDSL
NDSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed

Properties.
Formula
C2H2Cl2
Formula mass
96.94
Boiling point, °C
48
Vapor pressure, mmHg
333 (25 C)
Vapor density (air=1)
3.34
Density
1.252 g/cm3
Solubility in water
Insoluble
Surface tension
24 g/s2
Partition coefficient, pKow
1.75
Heat of vaporization
27.9 kJ/mol
Heat of combustion
-1041 kJ/mol

Hazards and Protection.
Storage
Keep away from sources of ignition. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Flammables-area.
Handling
Wash thoroughly after handling. Use only in a well ventilated area. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation.
Protection
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Small spills/leaks
Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Remove all sources of ignition. Use a spark-proof tool.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Oxidizing agents, bases.
Decomposition
Hydrogen chloride, carbon monoxide, carbon dioxide.

Fire.
Flash Point,°C
6
Autoignition, °C
460
Upper exp. limit, %
12.8
Lower exp. limit, %
9.7
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Will burn if involved in a fire. Extinguishing media: Use water spray to cool fire-exposed containers. In case of fire, use water fog, dry chemical, carbon dioxide, or regular foam.
Fire potential
Flammable, dangerous fire hazard.
Hazards
Vapor is heavier than air and may travel a considerable distance to a source of ignition and flash back.
Combustion products
Phosgene and hydrogen chloride fumes may form in fires.
Health
1
 
Flammability
3
 
 
Reactivity
2
 

Health.
Exposure limit(s)
TLV (as TWA): 200 ppm; 793 mg/m3 (ACGIH 1997). OSHA PEL: TWA 200 ppm (790 mg/m3) NIOSH REL: TWA 200 ppm (790 mg/m3) NIOSH IDLH: 1000 ppm
Poison_Class
3
Exposure effects
May affect the central nervous system at high levels, resulting in narcosis.
   Ingestion
May cause gastrointestinal irritation with nausea, vomiting and diarrhea. May be harmful if swallowed.
   Inhalation
May cause respiratory tract irritation. May cause narcotic effects in high concentration.
   Skin
May cause skin irritation.
   Eyes
May cause eye irritation.

First aid
 
   Ingestion
If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.
   Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
   Skin
Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
   Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Transport.
UN number
1150
Response guide
Hazard class
3
Packing Group
II
 
USCG CHRIS Code
DEL
 
36 Halogenated hydrocarbons
Std. Transport #
4963373