CAS 133-37-9 DL-Tartaric Acid Acidulant For Food And Beverage Industry Product Description DL-Tartaric Acid — Description DL-Tartaric acid (chemical formula C4 H6 O6 ) is the racemic form of tartaric acid, containing a 1:1 mixture of D- and L-tartaric acid . It is a white crystalline powder and is widely used in food, pharma, and industrial formulations due to its acidulant and acid–salt formation properties (e.g., as a calcium/tartarate salt). Specification Parameter