Potassium sodium tartrate

Potassium sodium tartrate (CAS 304-59-6 ), commercially known as Rochelle salt or E337 , is a double salt of tartaric acid used primarily as a buffering agent and sequestrant. Its ability to stabilize pH and chelate metal ions makes it a functional ingredient in formulations where consistency and shelf stability are critical across food, pharmaceutical, and personal care manufacturing. In food production, E337 functions as a stabilizer and emulsifying salt in processed cheese, where it controls texture and prevents fat separation during the manufacturing process. Pharmaceutical manufacturers use it as a buffering agent in oral solutions and effervescent formulations to maintain target pH ranges and ensure the stability of active ingredients. In personal care, it appears in creams and lotions as a chelating agent, neutralizing trace metals that would otherwise accelerate oxidative degradation of the final product. It also serves as a laxative active in certain over-the-counter preparations, where regulatory-grade purity is a sourcing requirement for manufacturers and compounding pharmacies. Potassium sodium tartrate is supplied as a white crystalline powder or granules. It is available in food-grade ( FCC ), USP , and BP / Ph.Eur. grades to meet compliance requirements. Bulk quantities are typically offered in 25 kg bags, with documentation packages supporting food and pharmaceutical applications to ensure full traceability and quality assurance. Contact us for supply of Potassium sodium tartrate Request Quote

Key Technical Features

• High Purity Grade standard
• Consistent Batch Quality
• Full Regulatory & REACH Support
• Global Logistics Network enabled