Trichloroethylene is a colorless and volatile liquid. Because of its good fat solubility, it is one of the organic solvents widely used in industry at present. It is often used as solvent and extractant for grease, gum, resin, wax and adhesive, as carrier solvent for machine parts and hardware parts before electroplating, cleaning and decontamination of electronic parts, dry cleaning of textiles, stain detergent, carpet detergent, organic synthesis, printing ink, adhesive, typing correction fluid, insecticide and bactericide, etc. If it is not well protected during production and use, it will cause occupational allergic dermatitis. In severe cases, it may even cause acute poisoning and endanger life safety.

Judging from the cases admitted in recent years, most of the damage caused by trichloroethylene to human body is allergic drug eruption-like dermatitis. Its condition is dangerous and changes rapidly, and the related literature reports that the mortality rate can be as high as 40%. Severe cases are accompanied by multiple organ damage, especially the liver, and may even develop into hepatic encephalopathy. Patients are extremely weak, have poor immune function, are easily infected, and the mortality rate is quite high. . . .