Glacial acetic acid is an extremely important organic chemical raw material, which can be divided into two categories according to its use: industrial and edible. Industrial acetic acid is one of the most important organic acids, mainly used in the production of vinyl acetate, acetic anhydride, acetate fibers, acetate esters, and metal acetates. Can be used to produce ethyl acetate, fibers, paints, adhesives (such as copolymer resins), acetic anhydride, chloroacetic acid, etc. Widely used in the pharmaceutical industry as an important solvent and raw material. Used as solvents and raw materials for industries such as pesticides and dyes. Edible glacial acetic acid can be used as an acidifier and flavoring agent in the production of synthetic edible vinegar. Dilute glacial acetic acid with water to a concentration of 4% to 5%, and add various seasonings to obtain edible vinegar. It is commonly used in tomato sauce, mayonnaise, kimchi, cheese, sugary food products, etc. Used as analytical reagent and non-aqueous titration solvent; Used in the manufacturing of photographic drugs, textile printing and dyeing, and rubber industry; Used for manufacturing acetates, pigments, fragrances, plastics, etc.