1. Used as nonflammable solvent and analytical reagent.
2. It is used to make indigo and other dyes and monochloroacetic acid. It is an important industrial solvent, used as metal detergent, dry cleaning agent, agricultural pesticide, etc.
3. Extract the solvent. Mainly used for decaffeination of coffee, etc.
4. Excellent solvent, used as metal surface treatment agent, cleaning agent before electroplating and painting, metal degreasing agent and extractant for fat, oil and paraffin. Used in organic synthesis and pesticide production. Trichloroethylene is used to produce tetrachloroethylene, which can be used as an anthelmintic; It is used to produce hexachloroethane, as an insect repellent for animals, to prevent and treat liver and stomach bdellosis, clonorchiasis and nematodiasis in ruminants.
5. Used as nonflammable solvent, determination of iodine value and organic synthesis.