DL-Tartaric Acid ,also called racemic tartaric acid, is the compound of equivalent D-tartaric acid and L+tartaric acid, usually containing one or two crystalline water and losing it when heated to 100°C. DL-Tartaric Acid is colorless crystals or white power, with sour taste.It is odorless and stable in air. DL-Tartaric Acid can be easily soluble in water, ethanol and diethyl ether.There are two asymmetric carbon atoms in tartaric acid molecule so tartaric acid consists of three optical isomers, namely the right spin tartaric acid, D - tartaric acid or left handed tartaric acid or L - tartaric acid, and meso tartaric acid.
DL-Tartaric Acid is widely used in food, medical, chemical and light industry such as being used as beer foaming agent, food acidulant and corrigent. DL-Tartaric Acid can make the food have a sour taste as food add antioxidant.In the mirrors industry, DL-Tartaric Acid is an important auxiliary agent and reducing agent.