D-tartaric acid

D-tartaric acid (CAS 147-71-7), also known as D-threaric acid, is the unnatural enantiomer of tartaric acid, distinguished from the naturally occurring L-form by its opposite optical rotation.

Where is D-tartaric acid used?

• Pharmaceutical manufacturing: chiral resolving agent and chiral building block for enantiomerically pure active ingredients
• Cosmetics: acidulant and chelating agent in skin care, stabilising formulations and adjusting pH
• Food and beverage: acidulant and antioxidant synergist that extends shelf life and tartness
• It contributes tartness to confectionery, beverages, and bakery products.
• Its chelating capacity sequesters metal ions that would accelerate oxidative degradation.

Good to know: Not to be confused with the naturally occurring L-form; the two differ by opposite optical rotation.