1,1,2,2-tetrachloroethene

C2Cl4

CAS127-18-4
GHS08 Gefahrensymbol: Gesundheitsgefahr – Gesundheitsgefahr
GHS09 Gefahrensymbol: Umweltgefährlich – Umwelt
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Identification

CAS Number
127-18-4
EC Number
204-825-9
UN Number
1897
Index Number
602-028-00-4
PubChem CID
31373

Physical-chemical properties

Molecular Formula
C2Cl4
Molar Mass
165.80 g/mol
IUPAC Name
1,1,2,2-tetrachloroethene

Chemical Identifiers

InChI
InChI=1S/C2Cl4/c3-1(4)2(5)6
InChI Key
CYTYCFOTNPOANT-UHFFFAOYSA-N

Overview

1,1,2,2-tetrachloroethene (CAS 127-18-4) is a chlorinated hydrocarbon solvent with excellent degreasing properties and chemical stability. This highly effective industrial solvent, also known by its molecular formula C2Cl4, represents a critical component in various manufacturing and cleaning processes across European industries. With a molecular weight of 165.8 g/mol, tetrachloroethene exhibits exceptional solvent capabilities particularly for organic compounds and greases, making it invaluable in specialized industrial applications. The compound's safety profile requires careful consideration, as it carries a Carc. 2 classification indicating potential carcinogenic properties, along with Aquatic Chronic 2 designation reflecting its environmental persistence. These hazard classifications necessitate appropriate handling protocols and regulatory compliance measures. The GHS08 and GHS09 pictograms emphasize both health hazards and environmental concerns, while the ADR Class 6.1 classification governs its transportation requirements under European dangerous goods regulations. Industrial applications of 1,1,2,2-tetrachloroethene span multiple sectors, including precision metal degreasing operations where its superior cleaning efficiency removes stubborn contaminants without damaging sensitive components. The aerospace and automotive industries frequently utilize this solvent for critical component preparation and maintenance procedures. Additionally, it serves as an intermediate in specialized chemical synthesis processes, though its use has become more regulated compared to related compounds like 1,2-diphenylguanidine which finds applications in rubber manufacturing. The compound's chemical stability and low reactivity under normal conditions make it particularly suitable for applications requiring consistent performance and minimal chemical interference with processed materials. OYSI maintains reliable supply chains for 1,1,2,2-tetrachloroethene to support European industrial customers requiring this specialized chlorinated solvent.

Safety & Classification

Warning
Classification:

Carc. 2; Aquatic Chronic 2

HHazard Statements (H-Statements)

Describe the nature and severity of the hazard

H351

Suspected of causing cancer.

H411

Toxic 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

Transport (ADR)

UN Number1897
ADR Class6.1
Packing GroupIII
Tunnel CodeE
Proper Shipping NameTetrachlorethylen
Marine PollutantNo

Frequently Asked Questions

What is 1,1,2,2-tetrachloroethene?

1,1,2,2-tetrachloroethene is a chlorinated organic solvent with the molecular formula C2Cl4 and CAS number 127-18-4. This chemical compound has a molecular weight of 165.8 g/mol and belongs to the family of chlorinated hydrocarbons. It is classified as a Category 2 carcinogen and presents chronic aquatic toxicity. The substance requires careful handling due to its health and environmental hazards, indicated by GHS08 and GHS09 pictograms with a warning signal word.

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

1,1,2,2-tetrachloroethene is a colorless liquid at room temperature with a characteristic sweet, chloroform-like odor. The compound has excellent solvent properties and is practically insoluble in water but miscible with most organic solvents. It exhibits high chemical stability under normal conditions and has a relatively high density compared to water. The substance is non-flammable and maintains its liquid state across a wide temperature range, making it suitable for various industrial applications.

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

1,1,2,2-tetrachloroethene is primarily used as a solvent in industrial cleaning applications, particularly for degreasing metal parts and components. The substance serves as an intermediate in chemical synthesis processes and is employed in the production of other chlorinated compounds. It finds application in specialized cleaning formulations where its excellent dissolving properties for oils, greases, and organic residues are required. Professional users include metal processing industries, chemical manufacturers, and specialized cleaning service providers.

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

1,1,2,2-tetrachloroethene requires strict safety precautions due to its carcinogenic properties and environmental hazards. Workers must wear appropriate personal protective equipment including chemical-resistant gloves, safety goggles, and respiratory protection when adequate ventilation is not available. Work areas should be well-ventilated to prevent vapor accumulation. Avoid skin and eye contact, and prevent inhalation of vapors. Use only in designated areas with proper engineering controls and ensure all personnel are trained in safe handling procedures.

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

1,1,2,2-tetrachloroethene must be stored in tightly sealed containers in a cool, dry, well-ventilated area away from heat sources and direct sunlight. The storage area should be equipped with appropriate spill containment measures and maintained at stable temperatures. Keep containers upright and properly labeled according to CLP requirements. Store separately from incompatible materials and ensure access is restricted to trained personnel only. Regular inspection of containers for signs of deterioration or leakage is essential for safe storage.

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

Immediate action is required in case of contact with 1,1,2,2-tetrachloroethene. For skin contact, remove contaminated clothing immediately and wash the affected area thoroughly with soap and water for at least 15 minutes. In case of eye contact, flush with clean water for 15 minutes while holding eyelids open. If vapors are inhaled, move the person to fresh air immediately. Remove from exposure and seek medical attention promptly, especially for significant exposure incidents, given the substance's carcinogenic classification.

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

1,1,2,2-tetrachloroethene must be disposed of as hazardous waste through licensed waste management companies specializing in chlorinated solvents. The substance cannot be discharged to sewers, waterways, or soil due to its environmental hazards and chronic aquatic toxicity classification. Container disposal requires triple rinsing and proper labeling before transfer to authorized waste handlers. All disposal activities must comply with local, national, and EU waste regulations, including proper documentation and tracking throughout the disposal process.

How to transport 1,1,2,2-tetrachloroethene?

1,1,2,2-tetrachloroethene is classified under ADR Class 6.1 (Toxic substances), Packing Group III for transportation purposes. The substance requires appropriate packaging, labeling, and documentation according to dangerous goods regulations. Transport vehicles must carry proper emergency equipment and drivers need ADR certification for Class 6.1 materials. Shipping documentation must include proper shipping names, hazard classifications, and emergency contact information. All transport activities must comply with international dangerous goods regulations for road, rail, and sea transport.

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

1,1,2,2-tetrachloroethene is subject to comprehensive EU chemical regulations including REACH registration requirements and CLP classification as Carcinogen Category 2 and Aquatic Chronic 2. The substance requires safety data sheets and appropriate hazard communication. Users must implement risk management measures and may need authorization for certain uses. Workplace exposure limits and environmental monitoring requirements apply. Industrial users must comply with emission controls and reporting obligations under various EU environmental directives governing toxic substances.

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

1,1,2,2-tetrachloroethene is available through OYSI, a specialized European distributor of technical chemicals serving industrial customers across Europe. OYSI provides regulatory compliant supplies with complete documentation including safety data sheets, certificates of analysis, and proper hazard labeling. As a professional chemical distributor, OYSI ensures product quality, regulatory compliance, and technical support for industrial applications. Contact OYSI directly for availability, specifications, and technical consultation regarding 1,1,2,2-tetrachloroethene requirements for your specific industrial applications.

Data Sources

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