Trans-1,2-Dichloroethylene CAS 156-60-5
Trans-12-Dichloroethylene CAS 156-60-5

Trans-1,2-Dichloroethylene CAS 156-60-5

Trans-1,2-Dichloroethylene CAS 156-60-5, Trans-1,2-Dichloroethylene, CAS 156-60-5

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Chemical Name: Trans-1, 2-dichloroethylene (also known as E-1, 2-dichloroethylene, trans-dichloroacetylene)

156-60-5

C2H2Cl2

96.94

205-860-2

Trans-1,2-Dichloroethylene CAS 156-60-5 Information

CAS 156-60-5
Molecular formula C2H2Cl2
Molecular weight 96.94
EIENCS 205-860-2
Form Liquid
Melting point −57°C
boling point 48-60°C
Density 1.257 g/mL at 25°C
Solubility Slightly soluble in water (0.63g /L); It is readily soluble in ethanol, ether, benzene and acetone
PKA /
Color Clear colorless
Storage temp

Trans-1,2-Dichloroethylene CAS 156-60-5

What is Trans-1,2-Dichloroethylene CAS 156-60-5?

Trans-1, 2-dichloroethylene (CAS 156-60-5) as a highly active halogenated solvent, its core value lies in:


Industrial performance: Irreplaceable in the field of electronic cleaning (low conductivity, highly efficient degreasing);

Synthetic criticality: An important raw material for pesticide and fragrance intermediates;

Safety challenge

Flammable and explosive (flash point < 7℃), requires explosion-proof equipment and inert gas protection;

Highly toxic decomposition products (phosgene, HCl). Strict wearing of gas masks is required during operation.

Process trend: Catalytic dechlorination of mixed chlorinated hydrocarbons dominates (cost reduction by 30%, environmental friendliness improved);


Chemical Name: Trans-1, 2-dichloroethylene (also known as E-1, 2-dichloroethylene, trans-dichloroacetylene)

Molecular formula: C₂H₂Cl₂

Molecular weight: 96.94 g/mol

CAS Number: 156-60-5

EINECS number: 205-860-2

Structural formula: ClHC=CHCl (trans configuration)

Appearance: Colorless and transparent liquid with a pungent odor similar to chloroform


Trans-1,2-Dichloroethylene CAS 156-60-5 Use

Industrial solvent

Electronic cleaner: Efficiently removes solder slag and grease from integrated circuits (IC) and printed circuit boards (PCB) due to its low electrical conductivity (does not damage components).

Degreaser: Dissolves fats, phenols, camphor and high molecular materials (such as thermoplastic plastics).


Chemical intermediates

Pesticide synthesis: Raw materials used for the preparation of insecticides and herbicides.

Spices and Dyes: Involved in the synthesis of high-value spices and azo dyes.

Analytical reagent: Used as an extractant in water quality testing.


Trans-1,2-Dichloroethylene CAS 156-60-5 safety

Health risk

Acute toxicity

Oral administration of LD₅₀ = 1235 mg/kg in rats; Inhaling high-concentration vapors can cause nausea and coma, and extremely high doses can be fatal.

Carcinogenicity: IARC classifies it as a Group 2B carcinogen (possibly carcinogenic to humans).


Exposure hazard

Burns caused by skin contact; Corneal damage caused by eye contact; Long-term inhalation can damage the liver, lungs and heart.

Environmental risk: Toxic to aquatic organisms, persistent pollution of soil and water bodies.


Operating Specifications

Protective equipment: Gas mask (≥50 ppm), fluorine-resistant rubber gloves, goggles, anti-static clothing.


Storage requirements

Cool and well-ventilated (≤30℃), light-proof and sealed, protected by inert gas (nitrogen).

Prohibited materials: copper, zinc, aluminum and their alloys (explosion-proof).

Leakage treatment: After adsorption by sand and soil, incinerate. Do not use water for flushing (heat release increases the risk).

Occupational limit: OSHA TWA 200 ppm (790 mg/m³).


Deshangchemical Info

  • ● Comgpany name : Shandong Deshang Chemicals Co., Ltd.
  • ● Main products : Treatments, sedimentation agents, flame retardants, catalysts, matte pigments, talcum powder, PVC additives, antifreeze agents, cellulose, cleaning agents, coconut oil, hydroxyethyl, cosmetics, matte agents, betaine, disinfectants, photosensitizers, humidifying agents, blue pigments, curing agents, potassium formate, sodium formate, cyclohexanol, preservatives, grinding aids.
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