1,1,2-trichloroethane

1,1,2-trichloroethane is a chlorinated hydrocarbon with the molecular formula C2H3Cl3 and CAS number 79-00-5. This organic compound has a molecular weight of 133.4 g/mol and belongs to the family of chloroalkanes. It is classified as a hazardous substance with carcinogenic properties (Category 2) and acute toxicity effects. The compound is regulated under various chemical safety frameworks due to its potential health risks.

1,1,2-trichloroethane is typically a colorless liquid at room temperature with a sweet, chloroform-like odor. It has limited solubility in water but is miscible with many organic solvents including alcohols and ethers. The compound exhibits moderate volatility and has a density greater than water. Its chlorinated structure makes it relatively stable under normal conditions but susceptible to hydrolysis in the presence of bases or at elevated temperatures.

1,1,2-trichloroethane is primarily used as an industrial solvent and chemical intermediate in organic synthesis. It serves as a degreasing agent for metal cleaning operations and as a solvent in various chemical processes. The compound is also utilized in the production of other chlorinated compounds and as a laboratory reagent. However, its applications have become increasingly restricted due to environmental and health concerns, leading to the adoption of safer alternatives in many industries.

1,1,2-trichloroethane must be handled with appropriate personal protective equipment including chemical-resistant gloves, safety goggles, and respiratory protection when necessary. Work should be conducted in well-ventilated areas or under fume extraction systems to minimize inhalation exposure. Given its carcinogenic classification (Category 2) and acute toxicity, operators should follow strict hygiene protocols, avoid skin contact, and never eat, drink, or smoke in work areas. Emergency shower and eyewash facilities should be readily accessible.

1,1,2-trichloroethane should be stored in tightly sealed containers in a cool, dry, well-ventilated area away from heat sources and direct sunlight. Storage areas must be equipped with appropriate containment systems to prevent spills from reaching drains or waterways. The substance should be kept away from strong bases, metals, and oxidizing agents to prevent unwanted reactions. Temperature control is important to minimize vapor formation, and storage facilities should comply with local fire and safety regulations.

Immediate removal from exposure is essential in case of contact with 1,1,2-trichloroethane. 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, flush immediately with clean water for 15-20 minutes while holding eyelids open. If inhaled, move the person to fresh air and monitor breathing. For ingestion, do not induce vomiting and seek immediate medical attention, providing the safety data sheet to healthcare professionals.

1,1,2-trichloroethane must be disposed of as hazardous waste through licensed waste management companies authorized to handle chlorinated solvents. The substance cannot be disposed of in regular waste streams or poured down drains due to its toxicity and environmental persistence. Disposal must comply with local, national, and EU waste regulations including the Waste Framework Directive. Incineration at high temperatures in specialized facilities is typically the preferred treatment method, ensuring complete destruction of the compound.

1,1,2-trichloroethane is classified under ADR as Class 6.1 (Toxic substances), Packing Group III for transportation purposes. It must be packaged in approved containers meeting UN specification requirements and properly labeled with hazard placards and marking. Transportation documents must include the proper shipping name and UN identification number. Drivers must hold appropriate ADR training certificates, and vehicles should carry emergency response information. Special handling procedures apply for loading, unloading, and emergency situations during transport.

1,1,2-trichloroethane is subject to comprehensive regulation under EU REACH and CLP regulations, requiring registration and classification as a carcinogenic substance. While not currently listed as an SVHC (Substance of Very High Concern), its carcinogenic properties subject it to strict workplace exposure limits and risk management measures. Industrial users must implement appropriate risk assessment and management strategies. The substance may also be subject to national restrictions and international protocols governing chlorinated compounds.

1,1,2-trichloroethane is available through OYSI, a specialized European distributor of technical chemicals serving industrial customers across the region. As an established chemical distributor, OYSI can provide the necessary documentation including safety data sheets, certificates of analysis, and regulatory compliance information required for professional use. Due to the substance's hazardous classification, purchases are typically restricted to qualified industrial users with appropriate handling capabilities and regulatory authorizations.