1,1,2-trichloroethene

C2HCl3

CAS79-01-6
GHS08 Gefahrensymbol: Gesundheitsgefahr – Gesundheitsgefahr
GHS07 Gefahrensymbol: Gesundheitsschädlich/Reizend – Ausrufezeichen
Danger

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Identification

CAS Number
79-01-6
EC Number
201-167-4
UN Number
1710
Index Number
602-027-00-9
PubChem CID
6575

Physical-chemical properties

Molecular Formula
C2HCl3
Molar Mass
131.38 g/mol
IUPAC Name
1,1,2-trichloroethene

Chemical Identifiers

InChI
InChI=1S/C2HCl3/c3-1-2(4)5/h1H
InChI Key
XSTXAVWGXDQKEL-UHFFFAOYSA-N

Overview

1,1,2-Trichloroethene (CAS 79-01-6) is a chlorinated hydrocarbon solvent with excellent degreasing properties and high chemical stability. This halogenated organic compound, also known by its IUPAC name 1,1,2-trichloroethene, represents an important industrial solvent in the chloroalkene family. With the molecular formula C2HCl3 and a molecular weight of 131.38 g/mol, this colorless liquid exhibits distinctive properties that make it valuable for specialized industrial applications requiring effective degreasing and extraction capabilities. The substance is classified under multiple hazard categories including carcinogenicity (Category 1B), mutagenicity (Category 2), and specific target organ toxicity, necessitating strict handling protocols and appropriate personal protective equipment. Its classification under ADR Class 6.1 reflects its toxic nature, requiring specialized transportation and storage conditions. The GHS08 and GHS07 pictograms with the signal word "Danger" emphasize the serious health risks associated with exposure. Industrial applications of 1,1,2-trichloroethene primarily focus on metal degreasing operations, chemical intermediate synthesis, and specialized extraction processes where its solvent properties are essential. The compound's effectiveness in removing oils, greases, and other organic contaminants from metal surfaces makes it particularly valuable in precision manufacturing and maintenance operations. Unlike some related chlorinated compounds such as chloro(methoxy)methane, trichloroethene offers superior stability under industrial processing conditions. Due to its hazardous classification and environmental concerns, proper risk assessment, regulatory compliance, and waste management protocols are essential for safe handling. OYSI provides 1,1,2-trichloroethene to qualified industrial customers with comprehensive safety documentation and technical support.

Safety & Classification

Danger
Classification:

Carc. 1B; Muta. 2; STOT SE 3; Skin Irrit. 2; Eye Irrit. 2; Aquatic Chronic 3

HHazard Statements (H-Statements)

Describe the nature and severity of the hazard

H350

May cause cancer.

H341

Suspected of causing genetic defects.

H336

May cause drowsiness or dizziness.

H315

Causes skin irritation.

H319

Causes serious eye irritation.

H412

Harmful to aquatic life with long lasting effects.

Classification according to CLP Regulation (EC) No 1272/2008. The complete list of hazard and precautionary statements can be found in the Safety Data Sheet (SDS).

First Aid Measures

Inhalation

Irritant

Measures if vapours or dust are inhaled

First Aid Actions

  • +P304IF INHALED:
  • +P340Remove person to fresh air and keep comfortable for breathing.
  • +P311Call a POISON CENTER/doctor.

Related hazard statements:

Skin Contact

Irritant

Measures if substance contacts the skin

First Aid Actions

  • +P302IF ON SKIN:
  • +P352Wash with plenty of water.
  • +P361Take off immediately all contaminated clothing.
  • +P313Get medical advice/attention.

Related hazard statements:

Eye Contact

Irritant

Measures if substance gets into the eyes

First Aid Actions

  • +P305IF IN EYES:
  • +P351Rinse cautiously with water for several minutes.
  • +P338Remove contact lenses, if present and easy to do. Continue rinsing.
  • +P313Get medical advice/attention.

Related hazard statements:

General Measures

Emergency 112 | Poison Control: +49 30 19240 (DE), +33 1 45 42 59 59 (FR), +31 30 274 88 88 (NL)

First aid measures are based on CLP classification and associated P-statements. They do not replace the Safety Data Sheet (SDS). In case of emergency, always consult the full SDS and a physician.

Transport (ADR)

UN Number1710
ADR Class6.1
Packing GroupIII
Tunnel CodeE
Proper Shipping NameTrichlorethylen
Marine PollutantNo

Frequently Asked Questions

What is 1,1,2-trichloroethene?

1,1,2-trichloroethene is a chlorinated organic compound with the molecular formula C2HCl3 and CAS number 79-01-6. This chemical substance has a molecular weight of 131.38 g/mol and belongs to the family of chlorinated hydrocarbons. It is classified as a hazardous substance with multiple danger classes including carcinogenic (Category 1B), mutagenic (Category 2), and toxic effects. The substance requires careful handling due to its serious health hazards and environmental concerns.

What are the physicochemical properties of 1,1,2-trichloroethene?

1,1,2-trichloroethene is a colorless liquid at room temperature with a characteristic sweet, chloroform-like odor. It has a density higher than water and limited water solubility, making it partially miscible with aquatic systems. The compound is volatile and can easily evaporate at ambient temperatures. Its chlorinated structure gives it stability against degradation but also contributes to its persistence in the environment and potential for bioaccumulation.

What is 1,1,2-trichloroethene used for?

1,1,2-trichloroethene is primarily used as an industrial solvent and chemical intermediate in various manufacturing processes. It serves as a degreasing agent for metal parts and components in industrial cleaning applications. The substance is also utilized in the production of other chlorinated compounds and as a processing aid in certain chemical syntheses. Due to its hazardous classification, its use is strictly regulated and limited to professional industrial applications with appropriate safety measures.

How to handle 1,1,2-trichloroethene safely?

1,1,2-trichloroethene must be handled with extreme caution due to its carcinogenic and mutagenic properties. Essential personal protective equipment includes chemical-resistant gloves, safety goggles, and respiratory protection in well-ventilated areas or fume hoods. Workers should avoid skin and eye contact, and prevent inhalation of vapors. All handling should occur in designated areas with appropriate ventilation systems, emergency eyewash stations, and safety showers readily available for immediate decontamination if needed.

How to store 1,1,2-trichloroethene correctly?

1,1,2-trichloroethene should be stored in tightly sealed, original containers in a cool, dry, well-ventilated area away from heat sources and ignition points. Storage areas must be equipped with appropriate containment systems to prevent environmental release. The substance should be kept away from incompatible materials such as strong bases, metals, and oxidizing agents. Storage facilities require proper ventilation, temperature control, and access restrictions to trained personnel only, with clear hazard labeling throughout the storage area.

What to do in case of contact with 1,1,2-trichloroethene?

Immediate action is required for any contact with 1,1,2-trichloroethene due to its toxic properties. For skin contact, remove contaminated clothing and wash the affected area thoroughly with soap and water for at least 15 minutes. In case of eye contact, rinse immediately with clean water for 15-20 minutes and remove contact lenses if present. If inhaled, move the person to fresh air immediately. Seek medical attention promptly for all exposure incidents and provide safety data sheet information to medical personnel.

How to dispose of 1,1,2-trichloroethene properly?

1,1,2-trichloroethene must be disposed of as hazardous waste through licensed waste management companies specializing in chlorinated solvents. The substance cannot be disposed of in regular waste streams, sewers, or water bodies due to its environmental toxicity and persistence. Disposal must comply with local and European waste regulations, including proper classification, packaging, and documentation. Empty containers should also be treated as hazardous waste and handled by authorized waste disposal contractors with appropriate permits.

How to transport 1,1,2-trichloroethene?

1,1,2-trichloroethene is classified under ADR Class 6.1 (toxic substances), Packing Group III for transportation purposes. The substance requires proper hazardous goods packaging, labeling with appropriate danger markings, and transport documentation including safety data sheets. Vehicles must display proper placarding and drivers need ADR certification for toxic substance transport. Transportation should follow the shortest practical routes with emergency response information readily available, and comply with tunnel restrictions and parking regulations for hazardous materials.

Is 1,1,2-trichloroethene subject to specific regulations?

1,1,2-trichloroethene is subject to strict European regulations under REACH and CLP due to its carcinogenic and mutagenic classification. The substance requires registration for manufacturing or import above certain tonnage thresholds and comprehensive safety assessments. Users must implement risk management measures and provide extended safety data sheets. The compound may face restrictions or authorization requirements under REACH Annex XVII, and workplace exposure limits apply under occupational health regulations across EU member states.

Where to buy 1,1,2-trichloroethene in Europe?

1,1,2-trichloroethene is available through OYSI, a specialized European distributor of industrial chemicals with expertise in hazardous substance supply chains. As a professional chemical distributor, OYSI ensures compliance with all regulatory requirements, provides proper documentation including safety data sheets, and offers technical support for safe handling procedures. Due to the substance's hazardous classification, purchases are restricted to qualified industrial users with appropriate permits, safety infrastructure, and trained personnel for safe handling and use.

Data Sources

Classification per CLP Regulation (EC) No 1272/2008. Data from ECHA and PubChem.