Tartaric acid can be used as an acidulant in food additives for soft drinks, jams, beverages, fruit jellies, canned goods, and candies. Due to its low hygroscopicity and high stability, it is particularly suitable for fruit juices and powdered beverages. It also serves as a food emulsifier, chelating agent, and antioxidant synergist; metal surface cleaner and polishing agent; pharmaceutical raw material, mordant, etc. It is often used in combination with citric acid, malic acid, and other acids.