Name | trans-1,2-Dichloroethylene |
Synonyms | 1,2-DICHLOROETHYLENE 2-dichloro-(e)-ethylen Dichloroethylene, trans- TRANS-1,2-DICHLOROETHENE TRANS-1,2-DICHLOROETHYLENE TRANS-ACETYLENE DICHLORIDE trans-1,2-Dichloroethylene Acetylene dichloride, trans- TRANS-SYM-ACETYLENEDICHLORIDE |
CAS | 156-60-5 |
EINECS | 205-860-2 |
InChI | InChI=1/C2H2Cl2/c3-1-2-4/h1-2H/b2-1+ |
Molecular Formula | C2H2Cl2 |
Molar Mass | 96.94 |
Density | 1.257 g/mL at 25 °C(lit.) |
Melting Point | −57 °C(lit.) |
Boling Point | 48-60 °C(lit.) |
Vapor Presure | 5.32 psi ( 20 °C) |
Appearance | colourless liquid |
Storage Condition | 2-8℃ |
Refractive Index | n20/D 1.447(lit.) |
MDL | MFCD00062942 |
Physical and Chemical Properties | Colourless liquid with pleasant odour, used as chemical intermediate, solvent and extraction agent. |
Use | Uses compared with cis-l, 2-dichloroethylene, trans -1, 2-dichloroethylene has less toxicity and more active chemical properties, in the industry, it is mainly used in the extraction of heat sensitive substances or solvents of certain polymer materials and raw materials for organic synthesis. A solvent such as fat, phenol, and camphor. Dyes, fragrances, paints, thermoplastics. Degreasing agent. |
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. R39/23/24/25 - R23/24/25 - Toxic by inhalation, in contact with skin and if swallowed. |
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. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S36/37 - Wear suitable protective clothing and gloves. |
UN IDs | UN 1150 3/PG 2 |
Raw Materials | 1,1,1,2-TETRACHLOROETHANE CIS-1,2-DICHLOROETHYLENE 1,1,2-Trichloroethane Iodine Acetylene |
Downstream Products | Dichloroacetyl chloride 1-DODECYNE |
Vapor pressure | 5.32 psi ( 20 °C) |
refractive index | n20/D 1.447(lit.) |
flash point | 43 °F |
storage conditions | Refrigerator |
solubility | Miscible with acetone, ethanol, and ether and very soluble in benzene and chloroform (U.S. EPA, 1985) |
morphology | Liquid |
color | Clear colorless |
explosion limit value (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) |
exposure limit | OSHA PEL: TWA 200 ppm (790 mg/m3); ACGIH TLV: TWA 200 ppm (adopted). |
stability | Incompatible with oxidizing agents, bases. Stable, but may decompose on exposure to air, moisture or light. Highly flammable. |
EPA chemical information | trans-1,2-Dichloroethylene (156-60-5) |
properties
Anti -1, 2-dichloroethylene is a chemical, colorless and slightly irritating volatile liquid, flammable, and its vapor and air can form an explosive mixture. Combustion and explosion caused by open flame and high heat energy. In the air, it decomposes and releases highly toxic phosgene and hydrogen chloride gas. It can react strongly with oxidants. It is possible to produce explosive chloroacetylene with copper and its alloys.
health hazards
Inhalation of high doses of 1,2-dichloroethylene can cause nausea, drowsiness and fatigue, while inhalation of extremely high doses can even cause death. When animals inhale high doses of trans -1, 2-dichloroethylene for a short or long time, their liver and lungs will be damaged, and longer exposure will have more serious effects. Inhaling very high doses of trans -1, 2-dichloroethylene can also destroy the animal's heart. Ingestion of very high doses of cis or trans 1, 2-dichloroethylene can even die. Lower concentrations of cis -1, 2-dichloroethylene will affect the blood. If the number of red blood cells is reduced, it will also affect the liver.
Toxicity
The toxicity to humans is similar to chloroform. The maximum allowable concentration of human in the air is 100ppm. When the air contains 100ppm, it can smell the smell of aromatic fruits. If the contact time is short, it can cause mild poisoning. The symptoms are dizziness, fatigue or cramps of limbs, nausea and vomiting.
Long-term inhalation at low concentration or exposure at high concentration (5000ppm) for 30 minutes can cause severe poisoning. The symptoms are severe vomiting, severe diarrhea, bleeding in the stomach, intestines, lungs and chest cavity, reduced heart rhythm, increased body temperature, from spasm to rest, loss of consciousness or death.
Skin contact with poison gas can cause skin burns. Treatment, such as skin burns, can be washed with warm water or warm soapy water.
Those with severe poisoning should be transferred to fresh air first, and their collars and belts should be loosened. If breathing stops, artificial respiration should be applied until the poisoned person can breathe naturally, and they should be sent to the hospital for treatment immediately.
use
water quality analysis
category
flammable liquids
toxicity classification
Poisoning
acute toxicity
oral-rat LD50: 1235 mg/kg; oral-mouse LD50: 2122 mg/kg
stimulus data
skin-rabbit 100 mg/24 hours moderate; eye-rabbit 10 mg moderate
explosive hazard characteristics
Contact with copper to generate explosive compounds; mix with air to explode
flammability hazard characteristics
Open flame, heating, oxidant flammable; acid, heating releases chloride-containing toxic gas
storage and transportation features
The warehouse is ventilated and dry at low temperature; lightly loaded and lightly removed, and stored separately from oxidants and acids
fire extinguishing agent
mist water, foam, carbon dioxide, 1211 fire extinguishing agent
occupational standards
TLV-TWA 200 PPM(790 mg/m3)
WGK Germany | 2 |
RTECS number | KV9400000 |
TSCA | Yes |
HazardClass | 3 |
PackingGroup | II |
customs code | 29032990 |
toxic substance 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) |