Potassium Bitartrate, CAS# 868-14-4, is a potassium salt of L-tartaric acid, available as colorless crystals or white crystal powder. Potassium Bitartrate, known as cream of tartar, is mainly used in culinary to improve stability of food. It's also widely used as additives in baking soda. Potassium Bitartrate is widely accepted as safe food additive in many countries with E number E336. As a professional supplier and manufacturer of food additives, Foodchem International Corporation has been supplying quality food grade Potassium Bitartrate to customers all over the world for over 10 years.