Tartaric Acid is a diprotic organic acid that comes in a white, crystalline form. It is a naturally occurring antioxidant found in plants such as grapes and bananas. Tartaric Acid is commonly used in wine, and can be added to other foods to achieve a sour taste. It is found in cream of tartar, and is used to make frosting for cakes. Fill out the form below to request a quote.