Potassium Bitartrate, CAS# 868-14-4, is a potassium salt of tartaric acid manufactured through chemical synthesis, available as colorless crystals or white crystal powder. Potassium Bitartrate is widely used as acidulants. It is widely accepted as safe food additive in many countries with E number E336. Foodchem International Corporation has been supplying quality Potassium Bitartrate to customers all over the world for over 10 years.