1.0 2010-04-08 22:11:26 UTC 2025-11-19 00:49:19 UTC FDB014741 Iron vitriol Nutrient supplement Iron(II) sulfate (Br.E. iron(II) sulphate) or ferrous sulfate is the chemical compound with the formula FeSO4. Known since ancient times as copperas and as green vitriol, the blue-green heptahydrate is the most common form of this material. All iron sulfates dissolve in water to give the same aquo complex [Fe(H2O)6]2+, which has octahedral molecular geometry and paramagnetic. Together with other iron compounds, ferrous sulfate is used to fortify foods and to treat iron-deficiency anemia. Ferrous sulfate heptahydrate Green vitriol Iron (II) sulfate, heptahydrate Iron sulfate heptahydrate Iron vitriol Iron(2+) sulfate (1:1) heptahydrate iron(2+) sulfate heptahydrate Iron(II) sulfate heptahydrate Sal chalybis Sulfuric acid, iron(2+) salt (1:1), heptahydrate FeH14O11S 278.015 277.960624113 λ²-iron(2+) ion heptahydrate sulfate λ²-iron(2+) ion heptahydrate sulfate 7782-63-0 O.O.O.O.O.O.O.[Fe++].[O-]S([O-])(=O)=O InChI=1S/Fe.H2O4S.7H2O/c;1-5(2,3)4;;;;;;;/h;(H2,1,2,3,4);7*1H2/q+2;;;;;;;;/p-2 SURQXAFEQWPFPV-UHFFFAOYSA-L belongs to the class of inorganic compounds known as transition metal sulfates. These are inorganic compounds in which the largest oxoanion is sulfate, and in which the heaviest atom not in an oxoanion is a transition metal. Transition metal sulfates Inorganic compounds Mixed metal/non-metal compounds Transition metal oxoanionic compounds Transition metal sulfates Inorganic oxides Inorganic salts Inorganic oxide Inorganic salt Transition metal sulfate hydrate iron molecular entity melting_point Mp 64° logp -0.84 ChemAxon pka_strongest_acidic -3 ChemAxon iupac λ²-iron(2+) ion heptahydrate sulfate ChemAxon average_mass 278.015 ChemAxon mono_mass 277.960624113 ChemAxon smiles O.O.O.O.O.O.O.[Fe++].[O-]S([O-])(=O)=O ChemAxon formula FeH14O11S ChemAxon inchi InChI=1S/Fe.H2O4S.7H2O/c;1-5(2,3)4;;;;;;;/h;(H2,1,2,3,4);7*1H2/q+2;;;;;;;;/p-2 ChemAxon inchikey SURQXAFEQWPFPV-UHFFFAOYSA-L ChemAxon polar_surface_area 80.26 ChemAxon refractivity 11.53 ChemAxon polarizability 5.81 ChemAxon rotatable_bond_count 0 ChemAxon acceptor_count 4 ChemAxon donor_count 0 ChemAxon physiological_charge -2 ChemAxon formal_charge 0 ChemAxon Specdb::MsMs 63933 Specdb::MsMs 63934 Specdb::MsMs 63935 Specdb::MsMs 120972 Specdb::MsMs 120973 Specdb::MsMs 120974