Trichloro is a good acylating agent and intermediate of organic synthesis which is widely used in pesticides, pharmaceuticals, organic intermediates and fine chemicals synthesis. As to pesticides, Trichloroacetyl chlorine is the main raw material in the synthesis of 3,5,6-trichloropyridin-2-ol sodium. Besides, it is also the main raw material of high efficient low toxicity herbicide "Puma" antidote and forest herbicide "carlon"; in the field of medicine, it is mainly used in the synthesis of antibiotics, fungicides and multi-ring antibiotics; Trichloroacetyl chlorine and biphenol are the raw material of multi-ring aromatic ether, which is the high-grade additive of polyamide (nylon) and polyester industry. This chemical is a kind of API. There are some basic informations about this crude drug: (1)CAS No.: ; (2)Other Names: Acetyl chloride; (3)MF: Cl₄C₂O;(4)EINECS No.: 200-926-7; (5)Appearance: colorless transparent flow liquid.