Sodium Citrate – Buffer, Chelating Agent & Flavor Modulator

Product name: Sodium Citrate

Synonyms: Trisodium citrate

CAS: 6132-04-3 (dihydrate); 68-04-2 (anhydrous)

MF: C6H5Na3O7·xH2O

MW: 258.06 (anhydrous)


Sodium citrate is a multifunctional excipient used as a buffering agent, chelator, and flavor modulator.

In pharmaceuticals, it stabilizes formulations, adjusts pH in oral solutions and injectables, and enhances solubility of certain actives.

In food and beverages, it provides a mild salty-sour taste, supports preservation systems, and improves flavor balance.

Its excellent solubility, low toxicity, and strong regulatory acceptance make sodium citrate a standard choice in many applications.