Monosodium phosphate (MSP) is an inorganic salt produced by the partial neutralization of phosphoric acid with sodium hydroxide. It is freely soluble in water and produces a mildly acidic solution.
MSP is widely used in the food industry as a pH buffer, sequestrant, and emulsifier in dairy, meat, and beverage processing. It serves as a precursor for producing disodium pyrophosphate, a key leavening acid. MSP's excellent buffering capacity in the acidic pH range makes it valuable for maintaining product stability during thermal processing and extended storage.