| Identification | More | [Name]
TRANS-1,2-DICHLOROETHYLENE | [CAS]
156-60-5 | [Synonyms]
1,2-DICHLOROETHYLENE
TRANS-1,2-DICHLOROETHENE
TRANS-1,2-DICHLOROETHYLENE
TRANS-ACETYLENE DICHLORIDE
TRANS-SYM-ACETYLENEDICHLORIDE
(E)-1,2-Dichlorethen
(E)-1,2-Dichlorethylen
(E)-1,2-Dichloroethene
(E)-1,2-Dichloroethylene
(E)-CHCl=CHCl
1,2-Dichlorethentrans-
1,2-dichloro-,(E)-Ethene
1,2-dichloro-ethylen
1,2-dichloroethylene,(E)-
1,2-dichloroethylene,(transisomers)
1,2-trans-Dichloroethene
1,2-trans-Dichloroethylene
1,trans-2-Dichloroethene
2-dichloro-(e)-ethen
2-dichloro-(e)-ethylen | [EINECS(EC#)]
205-860-2 | [Molecular Formula]
C2H2Cl2 | [MDL Number]
MFCD00062942 | [Molecular Weight]
96.94 | [MOL File]
156-60-5.mol |
| Chemical Properties | Back Directory | [Appearance]
1,2-Dichloroethylene exists in three isomers,
sym-, cis-60% and trans-40%. There are variations in toxicity between these two forms. At room temperature, these
chemicals are colorless liquids with a slightly acrid, ethereal odor. The Odor Threshold in air is 17 ppm.
sym-isomer: | [Melting point ]
−57 °C(lit.)
| [Boiling point ]
48-60 °C(lit.)
| [density ]
1.257 g/mL at 25 °C(lit.) | [vapor pressure ]
5.32 psi ( 20 °C)
| [refractive index ]
n20/D 1.447(lit.)
| [Fp ]
43 °F
| [storage temp. ]
Refrigerator | [solubility ]
Miscible with acetone, ethanol, and ether and very soluble in benzene and chloroform (U.S. EPA,
1985) | [form ]
Liquid | [color ]
Clear colorless | [Stability:]
Incompatible with oxidizing agents, bases. Stable, but may decompose on exposure to air, moisture or light. Highly flammable. | [explosive limit]
12.8% | [Water Solubility ]
Miscible with ethanol, ethyl ether, acetone, benzene and chloroform. Immiscible with water. | [Merck ]
14,92 | [BRN ]
1420761 | [Henry's Law Constant]
10.12 at 30 °C (headspace-GC, Sanz et al., 1997) | [Dielectric constant]
2.27 | [Exposure limits]
OSHA PEL: TWA 200 ppm (790 mg/m3); ACGIH TLV:
TWA 200 ppm (adopted). | [LogP]
2.06 | [CAS DataBase Reference]
156-60-5(CAS DataBase Reference) | [EPA Substance Registry System]
trans-1,2-Dichloroethylene (156-60-5) |
| Safety Data | Back Directory | [Hazard Codes ]
F,Xn,T | [Risk Statements ]
R11:Highly Flammable.
R20:Harmful by inhalation.
R52/53:Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment .
R39/23/24/25:Toxic: danger of very serious irreversible effects through inhalation, in contact with skin and if swallowed .
R23/24/25:Toxic by inhalation, in contact with skin and if swallowed . | [Safety Statements ]
S7:Keep container tightly closed .
S16:Keep away from sources of ignition-No smoking .
S29:Do not empty into drains .
S61:Avoid release to the environment. Refer to special instructions safety data sheet .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
S36/37:Wear suitable protective clothing and gloves . | [RIDADR ]
UN 1150 3/PG 2
| [WGK Germany ]
2
| [RTECS ]
KV9400000
| [TSCA ]
Yes | [HazardClass ]
3 | [PackingGroup ]
II | [HS Code ]
29032990 | [Safety Profile]
Moderately toxic by ingestion. Mddly toxic by inhalation. Human systemic effects by inhalation: sleep, hallucinations, and distorted perceptions. Experimental reproductive effects. A skin and eye irritant. Mutation data reported. Exposure to high vapor concentration can cause nausea, vomiting, weakness, tremor, and cramps. Recovery is usually prompt following removal from exposure. Dermatitis may result from defatting action on skin. Dangerous fire hazard when exposed to heat, flame, or oxidtzers. Moderate explosion hazard in the form of vapor when exposed to flame. Violent reaction with difluoromethylene dihypofluorite. Forms shock-sensitive explosive mixtures with dinitrogen tetraoxide. Reaction with solid caustic alkahes or their concentrated solutions produces chloracetylene gas that ignites spontaneously in air. Reacts violently with N2O4, KOH, Na, NaOH. Moderate explosion hazard in the form of vapor when exposed to flame. Can react vigorously with oxidizing materials. To fight fire, use water spray, foam, CO2, dry chemical. When heated to decomposition it emits toxic fumes of Cl-. See also CHLORIDES; CHLORINATED HYDROCARBONS, ALIPHATIC; and ACETYLENE COMPOUNDS.
| [Hazardous Substances Data]
156-60-5(Hazardous Substances Data) | [Toxicity]
LD50 in rats (ml/kg): 1.0 orally; 60 i.p.; in mice (ml/kg): 3.2 i.p. (Freundt) |
| Hazard Information | Back Directory | [General Description]
Clear colorless liquid with a pleasant odor. Flash point 43°F. | [Reactivity Profile]
1,2-DICHLOROETHYLENE reacts with alkalis, difluoromethylene, dihypofluorite, and nitrogen tetraoxide. Contact with solid alkalis or their concentrated solutions will cause formation of chloroacetylene, which ignites in air. Avoid contact with copper and copper alloys. Corrosive to metals unless an inhibitor has been added. Oxidation in the presence of concentrated sulfuric acid or a free radical initiator gives chloroacetyl chloride via epoxide intermediates. Incompatible with organic peroxides . | [Air & Water Reactions]
Highly flammable. Oxidizes in air to form unstable peroxides that may explode spontaneously. Insoluble in water. | [Potential Exposure]
Primary irritant (w/o allergic reaction).
1,2-Dichloroethylene is 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. | [Fire Hazard]
This compound is flammable. | [First aid]
If this chemical gets into the eyes, remove any
contact lenses at once and irrigate immediately for at least
15 minutes, occasionally lifting upper and lower lids. Seek
medical attention immediately. If this chemical contacts the
skin, remove contaminated clothing and wash immediately
with soap and water. Seek medical attention immediately.
If this chemical has been inhaled, remove from exposure,
begin rescue breathing (using universal precautions, including resuscitation mask) if breathing has stopped and CPR if
heart action has stopped. Transfer promptly to a medical
facility. When this chemical has been swallowed, get medical attention. Give large quantities of water and induce
vomiting. Do not make an unconscious person vomit | [Shipping]
UN1150 Dichloroethylene, Hazard Class: 3;
Labels: 3-Flammable liquid. | [Incompatibilities]
May form explosive mixture with air.
Attacks some plastics, rubber, and coatings. Incompatible
with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.);
contact may cause fires or explosions. Keep away from
alkaline materials, strong bases, strong acids, oxoacids, and
epoxides. Gradual decomposition results in hydrochloric
acid formation in the presence of ultraviolet light or upon
contact with hot metal or other hot surfaces. Reacts with
strong bases; potassium hydroxide; difluoromethylene,
dihypofluoride, nitrogen tetroxide (explosive); or copper
(and its alloys) producing toxic chloroacetylene which is
spontaneously flammable on contact with air. Attacks some
plastics and coatings. | [Chemical Properties]
1,2-Dichloroethylene exists in three isomers,
sym-, cis-60% and trans-40%. There are variations in toxicity between these two forms. At room temperature, these
chemicals are colorless liquids with a slightly acrid, ethereal odor. The Odor Threshold in air is 17 ppm.
sym-isomer: | [Chemical Properties]
colourless liquid | [Waste Disposal]
Incineration, preferably after
mixing with another combustible fuel. Care must be exercised to assure complete combustion to prevent the formation of phosgene. An acid scrubber is necessary to remove
the halo acids produced. Consult with environmental
regulatory agencies for guidance on acceptable disposal
practices. Generators of waste containing this contaminant
(≧100 kg/mo) must conform with EPA regulations governing storage, transportation, treatment, and waste disposal. | [Physical properties]
Colorless, viscous liquid with a sweet, pleasant odor. Odor threshold concentration is 17 ppm
(quoted, Amoore and Hautala, 1983). | [Uses]
Solvent for fats, phenol, camphor, etc. Intermediate in synthesis of chlorinated solvents and compounds. | [Definition]
ChEBI: 1,2-dichloroethene is a member of chloroethenes. | [Flammability and Explosibility]
Flammable | [Environmental Fate]
Soil. In a methanogenic aquifer material, trans-1,2-dichloroethylene biodegraded to vinyl
chloride (Wilson et al., 1986). Under anoxic conditions trans-1,2-dichloroethylene, when
subjected to indigenous microbes in uncontaminated sediments, degraded to vinyl chloride
(Barrio-Lage et al., 1986). trans-1,2-Dichloroethylene showed slow to moderate degradation
concomitant with the rate of volatilization in a static-culture flask-screening test (settled domestic
wastewater inoculum) conducted at 25 °C. At concentrations of 5 and 10 mg/L, percent losses
after 4 wk of incubation were 95 and 93, respectively. The amount lost due to volatilization was
26 to 33% after 10 d (Tabak et al., 1981).
Biological. Heukelekian and Rand (1955) reported a 10-d BOD value of 0.05 g/g which is 7.6%
of the ThOD value of 0.66 g/g.
Photolytic. Carbon monoxide, formic and hydrochloric acids were reported to be photooxidation
products (Gay et al., 1976). | [Purification Methods]
Dry it with MgSO4, and fractionally distil it under CO2. Fractional crystallisation at low temperatures has also been used. [Beilstein 1 IV 709.] |
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