Monomagnesium phosphate
Monomagnesium phosphate is one of the forms of magnesium phosphate. It is a magnesium acid salt of phosphoric acid with the chemical formula Mg2. Di- and tetrahydrates are known also. It dissolves in water, forming phosphoric acid and depositing a solid precipitate of Mg.3H2O, dimagnesium phosphate.
As a food additive, it is used as an acidity regulator and has the E number E343.
