Zinc citrate

Zinc citrate (CAS 546-46-3), also known as trizinc dicitrate or citric acid zinc salt, is an inorganic zinc salt formed from zinc and citric acid. It delivers bioavailable zinc in a chelated form, offering greater stability and compatibility than zinc oxide or zinc sulfate in complex formulations.

In oral care and personal care products, zinc citrate functions as an antimicrobial agent by inhibiting bacterial enzyme activity, reducing plaque formation and malodor at concentrations typically between 0.5% and 2%. In nutritional supplements and fortified foods, it serves as a bioavailable zinc source with buffering capacity that supports stable pH across processing conditions.

Zinc citrate is available in food-grade and pharmaceutical-grade forms, with compliance to FCC and Ph.Eur. monographs depending on application. It falls under REACH registration requirements for EU supply. Procurement is typically available in 25 kg bags or fiber drums, with bulk options on request.