Dl-tartaric acid is widely used in food, medicine, chemical, light industry and other industries. In the food industry, tartaric acid is an excellent acidity agent, its sour taste is 1.2-1.3 times times the acidity of citric acid, unique flavor. According to the sanitary standards used in China's food additives, it is mainly used with citric acid, malic acid and other compound use, can be used for beverages, cans, jams, sweets, etc., because tartaric acid as a fermentation powder and other raw materials have other edible organic acids do not have characteristics, so some occasions can also be used as chelating agents, antioxidant additives, incense additives, Quick-acting puffing agent. In the pharmaceutical industry, tartaric acid can be used as a pharmaceutical intermediate as well as an efficient splitting agent. It can be used in the chemical industry to produce niacin and niacin, as a detergent and polishing agent on the metal surface. In the textile industry, tartaric acid and tannins can be used as dyeing agents for acidic dyes. In addition, tartaric acid in leather, cement, photographic development and other industries also have important applications.