Potassium tartrate

Potassium tartrate (CAS 921-53-9), also designated E336ii, is the dipotassium salt of tartaric acid used commercially as a pH buffer and stabilizer.

Where is Potassium tartrate used?

• Food manufacturing: buffering agent
• Confectionery, baked goods and processed foods: precise acidity control affecting texture and shelf stability
• Winemaking: stabilizes tartrate levels and prevents unwanted crystal formation
• Personal care: pH adjuster in creams, lotions and cleansing products
• It also acts as a mild antioxidant in food systems.

Commercial specifications

• Highly soluble in water