Tartaric acid is a naturally occurring organic acid found in many plants, particularly in grapes, bananas, and tamarinds. It is a key acid in wine, contributing to its tartness and stability. Tartaric acid is used in the food industry as an acidulant and stabilizer, and it plays a crucial role in the leavening process of baking powders. It is also used in the pharmaceutical industry for the preparation of effervescent tablets. Tartaric acid is a white crystalline diprotic acid, and its salts are known as tartrates.