in vier isomeren Formen bek. Dihydroxycarbonsäure; große, farblose Kristalle. Die d-(Rechts-)W. (W. i.e.S.), auch Weinsteinsäure gen., kommt in vielen Früchten (z.B. Weintrauben) frei u. in Form ihrer Salze (Tartrate) vor.
An acid found in many fruits; used in soft drinks and confectionery and baking powder.
HCOO(CHOH)2COOH organic acid present in vegetable tissues and fruit juices in the form of salts of potassium, calcium, and magnesium. It is used in carbonated drinks and baking powders.