1. Metal degreasing and cleaning: Due to its excellent ability to dissolve oils and good volatility, trichloroethylene can quickly and effectively remove impurities such as oil stains, greases, and waxes from the surface of metals. It dries quickly without leaving any marks. Therefore, it is widely applied in industries such as automobile manufacturing, aerospace, and machining for cleaning various metal parts like engine components, bearings, molds, and gears.

2. Cleaning in the electronics industry: During the manufacturing process of electronic components and circuit boards, it is necessary to remove impurities such as surface dirt and residual soldering fluxes to ensure the quality and performance of the products. Trichloroethylene has a good dissolving and cleaning effect on these impurities and can be used to clean semiconductor chips, printed circuit boards, electronic instruments, etc.

3. Raw material for organic synthesis: Trichloroethylene is an important intermediate in organic synthesis and can be used to synthesize a variety of organic compounds through various chemical reactions. For example, tetrachloroethylene can be prepared through an oxidation reaction; chloroacetic acid can be obtained through a hydrolysis reaction; through reactions with other reagents, important organic chemical products such as dichloroacetyl chloride and hexachloroethane can also be synthesized.

4. Extractant: Trichloroethylene can dissolve many organic substances and is often used as an extractant to extract and separate target substances from mixtures. For instance, in the metallurgical industry, it can be used to extract rare metals such as uranium and thorium from minerals; in the food and pharmaceutical industries, it can be used to extract components such as oils, alkaloids, and natural flavors from animal and plant tissues.

5. Refrigerant and blowing agent: Trichloroethylene was once used as a refrigerant and blowing agent. Utilizing its properties of low boiling point and easy volatility, it can transfer and exchange heat in a refrigeration system or produce a foaming effect in the production of foam plastics. However, due to its certain hazards to the environment and human health, some of its applications have gradually been replaced by other more environmentally friendly substances.

6. Solvent for coatings and adhesives: In some coating and adhesive formulations, trichloroethylene can be used as a solvent to dissolve components such as resins and additives, and to adjust the viscosity and drying rate of coatings and adhesives, enabling them to have good construction performance and adhesive properties.