Tartaric acid is a white crystalline organic acid that occurs naturally in many plants, most notably in grapes. Its salt, potassium bitartrate, commonly known as cream of tartar, develops naturally in the process of winemaking.
T 1227 (OTTO) Tartaric acid, GR 99%+ Cas 87-69-4 - used in farming and metal industries for complexing micronutrients and for cleaning metal surfaces, respectively.