1.0 2010-04-08 22:10:38 UTC 2025-11-18 23:43:14 UTC FDB013291 Magnesium hydroxide It is used in foods as a dietary supplement, pH control agent and processing aid Magnesium hydroxide is an inorganic compound with the chemical formula Mg(OH)2. As a suspension in water, it may be referred to as Milk of Magnesia. The solid mineral form of magnesium hydroxide is known as brucite. E528 Magnesium hydrate Milk of magnesia H2MgO2 58.32 57.990521206 magnesium(2+) ion dihydroxide magnesium(2+) ion dihydroxide 1309-42-8 [OH-].[OH-].[Mg++] InChI=1S/Mg.2H2O/h;2*1H2/q+2;;/p-2 VTHJTEIRLNZDEV-UHFFFAOYSA-L belongs to the class of inorganic compounds known as alkaline earth metal hydroxides. These are inorganic compounds in which the largest oxoanion is hydroxide, and in which the heaviest atom not in an oxoanion is an alkaline earth metal. Alkaline earth metal hydroxides Inorganic compounds Mixed metal/non-metal compounds Alkaline earth metal oxoanionic compounds Alkaline earth metal hydroxides Inorganic hydrides Inorganic oxides Inorganic salts Alkaline earth metal hydroxide Inorganic hydride Inorganic oxide Inorganic salt magnesium hydroxide melting_point 350 °C (decomp.) logp -0.57 ChemAxon pka_strongest_acidic 15.7 ChemAxon pka_strongest_basic -1.8 ChemAxon iupac magnesium(2+) ion dihydroxide ChemAxon average_mass 58.32 ChemAxon mono_mass 57.990521206 ChemAxon smiles [OH-].[OH-].[Mg++] ChemAxon formula H2MgO2 ChemAxon inchi InChI=1S/Mg.2H2O/h;2*1H2/q+2;;/p-2 ChemAxon inchikey VTHJTEIRLNZDEV-UHFFFAOYSA-L ChemAxon polar_surface_area 0 ChemAxon refractivity 0 ChemAxon polarizability 1.78 ChemAxon rotatable_bond_count 0 ChemAxon acceptor_count 0 ChemAxon donor_count 0 ChemAxon physiological_charge 0 ChemAxon formal_charge 0 ChemAxon HMDB32435 odorless