Potassium lactate

Potassium lactate (CAS 996-31-6 ), also designated E326 , is the potassium salt of lactic acid supplied primarily as a concentrated aqueous solution. It functions as a humectant, pH buffer, and antimicrobial synergist across food, personal care, and pharmaceutical applications.

In processed meats and ready-to-eat foods, it extends shelf life by suppressing pathogen growth, particularly Listeria, while contributing a mild, clean flavor profile. Food formulators also use it as an acidulant and buffering agent in sauces and marinades.

It is frequently utilized in bakery products where potassium-based labeling is preferred over sodium alternatives. In cosmetic formulations, it acts as a moisturizing agent and pH adjuster in lotions, creams, and leave-on skin care products.

Its hygroscopic character supports water retention in the finished formula for various personal care items. Pharmaceutical manufacturers incorporate it as a buffering excipient in topical preparations and oral dosage forms requiring controlled acidity.

Potassium lactate is most commonly supplied as a 60% aqueous solution, though higher-concentration and dry powder forms are available for specific applications. Food-grade material is produced to FCC specifications for global distribution.

Pharmaceutical-grade material is available to USP and Ph. Eur. standards to meet strict regulatory requirements. Packaging typically ranges from drums and IBCs to bulk tanker supply for high-volume food processing operations.

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