1,1,1-trichloroethane

1,1,1-trichloroethane is a chlorinated hydrocarbon with the chemical formula C2H3Cl3 and molecular weight of 133.4 g/mol. This synthetic compound, identified by CAS number 71-55-6, belongs to the family of organochlorine solvents. It appears as a colorless liquid with a sweet, chloroform-like odor and is known for its excellent solvent properties and chemical stability under normal conditions.

1,1,1-trichloroethane is a colorless liquid with a characteristic sweet odor similar to chloroform. It has a boiling point of approximately 74°C and is poorly soluble in water but miscible with most organic solvents. The compound is relatively stable under normal conditions, non-flammable, and has a density greater than water. It evaporates readily at room temperature, forming vapors heavier than air.

1,1,1-trichloroethane is primarily used as a degreasing solvent in metal cleaning applications and precision cleaning of electronic components. It serves as an effective cleaning agent in vapor degreasing operations and cold cleaning processes. The compound is also utilized in adhesive formulations, as a chemical intermediate in synthesis reactions, and in specialized cleaning applications where its non-flammable properties are advantageous.

Safe handling of 1,1,1-trichloroethane requires appropriate personal protective equipment including chemical-resistant gloves, safety goggles, and respiratory protection when adequate ventilation is not available. Work should be conducted in well-ventilated areas or under fume extraction systems. Avoid skin contact and inhalation of vapors. The substance is classified as Acute Tox. 4, requiring careful handling to prevent exposure through dermal or inhalation routes.

1,1,1-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 ventilation systems to prevent vapor accumulation. Keep containers upright and properly labeled according to CLP requirements. Store away from incompatible materials such as strong bases, metals like aluminum, and oxidizing agents to prevent degradation or dangerous reactions.

In case of skin contact with 1,1,1-trichloroethane, immediately remove contaminated clothing and wash the affected area thoroughly with soap and water. For eye contact, rinse immediately with plenty of clean water for at least 15 minutes and seek medical attention. If inhaled, move the person to fresh air and seek medical advice if symptoms persist. In case of ingestion, do not induce vomiting and seek immediate medical attention.

1,1,1-trichloroethane must be disposed of as hazardous waste in accordance with local, national, and EU waste regulations. The substance cannot be discharged into sewers or the environment due to its ozone-depleting properties and toxicity. Disposal should be carried out by licensed waste management companies specializing in halogenated solvents. Empty containers must also be handled as hazardous waste and properly cleaned or disposed of according to regulations.

1,1,1-trichloroethane is classified under ADR as Class 6.1 (toxic substances), Packing Group III, requiring specific packaging, marking, and documentation for transport. Packages must bear appropriate hazard labels and proper shipping names. Transport vehicles must comply with ADR regulations including equipment requirements and driver training. Shipping documents must include the correct UN number, proper shipping name, hazard class, and packing group information.

1,1,1-trichloroethane is subject to multiple regulatory frameworks including REACH registration requirements and CLP classification as Acute Tox. 4 and Ozone 1. It is regulated under the Montreal Protocol as an ozone-depleting substance, significantly restricting its production and use. The substance requires safety data sheets and appropriate hazard labeling with GHS07 pictogram and warning signal word. Industrial users must comply with emission limits and reporting requirements.

1,1,1-trichloroethane can be purchased from OYSI, a specialized European distributor of chemical products serving industrial customers across the continent. As a professional chemical supplier, OYSI provides quality products with proper documentation, safety data sheets, and regulatory compliance support. Due to the substance's regulatory restrictions as an ozone-depleting compound, availability may be limited and subject to specific authorization requirements depending on the intended application and jurisdiction.