1,2-Dichloroethylene,mixture of cis and trans
1,2-DICHLOROETHYLENE
CAS: 540-59-0
Molecular Formula: C2H2Cl2
1,2-Dichloroethylene,mixture of cis and trans - Names and Identifiers
1,2-Dichloroethylene,mixture of cis and trans - Physico-chemical Properties
| Molecular Formula | C2H2Cl2 |
| Molar Mass | 96.94 |
| Density | 1.265g/mLat 25°C(lit.) |
| Melting Point | −57°C(lit.) |
| Boling Point | 48-60°C(lit.) |
| Flash Point | 43°F |
| Vapor Presure | 5.32 psi ( 20 °C) |
| Appearance | Colorless liquid |
| Odor | Ethereal, slightly acrid; pleasant, chloroform-like. |
| Merck | 13,94 |
| Refractive Index | n20/D 1.447(lit.) |
| Physical and Chemical Properties | The product is composed of cis and trans isomers and is a colorless liquid. Melting point -57 ℃, boiling point 48~60 ℃. Slightly toxic, with a pleasant smell. In case of humidity, sunlight and air, hydrogen chloride gradually decomposes and escapes. Its hot vapor can catch fire, but it cannot continue to burn without external heat. Soluble in organic solvents such as alcohol and ether, insoluble in water. |
1,2-Dichloroethylene,mixture of cis and trans - Risk and Safety
| Risk Codes | R11 - Highly Flammable R20 - Harmful by inhalation R52/53 - Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment. |
| Safety Description | S7 - Keep container tightly closed. S16 - Keep away from sources of ignition. S29 - Do not empty into drains. S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. |
| UN IDs | UN 1150 3/PG 2 |
| WGK Germany | 2 |
| RTECS | KV9360000 |
| Hazard Class | 3.1 |
| Packing Group | II |
| Toxicity | LD50 i.p. in mice: ~2150 mg/kg (Gradiski) |
1,2-Dichloroethylene,mixture of cis and trans - References
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Use | can be used as solvents for paints, resins, waxes, rubber, cellulose acetate, for dry cleaning agents, insecticides, fungicides, anesthetic, low-temperature extractant and cryogen, etc. |
| production method | 1,1,2, 2-tetrachloroethane is obtained by dechlorination of zinc powder or iron powder; it can also be prepared by reacting acetylene with chlorine in an inert solvent; It can also be obtained from 1,1, 2-trichloroethane by cleavage of copper chloride on pumice. |
| category | flammable liquid |
| toxicity grade | poisoning |
| Acute toxicity | oral-rat LD50: 770 mg/kg; Oral-mouse LDL0: 3160 mg/kg |
| stimulation data | Skin-rabbit 100 mg/24 h moderate |
| explosive hazard characteristics | mixing with air to form an explosive mixture; |
| flammability hazard characteristics | flammable; Thermal decomposition of toxic gases such as phosgene and hydrogen chloride; hydrolysis to hydrochloric acid |
| storage and transportation characteristics | The warehouse is ventilated and dried at low temperature; It is stored separately from the oxidant |
| fire extinguishing agent | foam, dry powder, carbon dioxide, sand |
| Occupational Standard | TLV-TWA 790 mg/m3; Tel 990 mg/m3 |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
| immediate life-and health-threatening concentrations | 1,000 ppm |
Last Update：2024-04-09 15:17:18
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