Dl Tartaric Acid (or racemic tartaric acid), CAS# 133-37-9, is a 1:1 mixture of L-Tartaric acid and D-Tartaric acid, available as White crystal powder. The acidity of Dl Tartaric Acid is about 30% stronger than citric acid. As a professional supplier and manufacturer of food additives, Foodchem International Corporation has been supplying quality Dl Tartaric Acid to customers all over the world for over 10 years.