Quality index: Appearance:Colorless Transparent Liquid Content: ≥ 99% Melting point < 25^oC Boiling point: 107-108^oC (lit.) Density: 1.533 g / ml at 20^oC Refractive index N20 / D 1.46 (lit.) Flash point: 66^oC Instruction: Used in organic synthesis, pesticide and pharmaceutical intermediates.It is used in the synthesis of vinyl insecticide, wool felting finishing, bleaching, decolorization, preservation, sterilization, disinfection, etc.. Operation precautions: closed operation, pay attention to ventilation. Operators must be specially trained and strictly abide by the operating procedures. It is recommended that operators wear self-priming filter gas mask (full mask), rubber acid and alkali resistant clothing and rubber acid and alkali resistant gloves. Keep away from fire and heat source. No smoking in the workplace. Use explosion-proof ventilation system and equipment. Avoid smoke. Prevent the release of smoke and steam into the workplace air. Avoid contact with oxidant, alkali and alcohol. In particular, avoid contact with water. When carrying, it should be loaded and unloaded lightly to prevent the package and container from being damaged. Fire fighting equipment of corresponding variety and quantity and leakage emergency treatment equipment shall be provided. Empty containers may contain harmful substances. Storage precautions: store in a cool, dry and well ventilated warehouse. Keep away from fire and heat source. Keep the container sealed. It should be stored separately from oxidants, alkalis and alcohols, and mixed storage should be avoided. Fire fighting equipment of corresponding variety and quantity shall be provided. The storage area shall be equipped with leakage emergency treatment equipment and suitable storage materials. Production method: various process routes can be used in the preparation method. The product can be prepared by the reaction of dichloroacetic acid with chlorosulfonic acid, the reaction of chloroform with carbon monoxide catalyzed by anhydrous aluminum trichloride, the reaction of dichloroacetic acid with phosgene in dimethylformamide, and the oxidation of trichloroethylene. Trichloroethylene and azodiisobutyronitrile (catalyst) were heated to 100 ℃, oxygen was introduced, and the reaction was carried out under the pressure of 0.6MPa. The oil bath temperature was maintained at 110 ℃ for 10h, and dichloroacetyl chloride was evaporated under normal pressure. The by-product trichloroethylene oxide can also be converted into dichloroacetyl chloride by the reaction with methylamine, triethylamine, pyridine and other amines. Packing: 250kg / drum. Annual capacity: 3000 tons / year