Monoammonium Phosphate

Monoammonium Phosphate is an inorganic salt formed from phosphoric acid and ammonia, appearing as a white crystalline powder. In cosmetic formulations, it serves as an acidic pH buffer and chelating agent, particularly valued for its ability to maintain stable acidic pH ranges while sequestering metal ions that could destabilize formulations. Formulators choose it for its dual functionality and high water solubility, making it effective at low concentrations in aqueous systems where pH control and metal ion chelation are critical.