Product Name: Manganese sulphate Synonyms: manganese(2+)sulfate(1:1);manganese(ii)sulfate(1:1);manganesesulfate(1:1);manganesesulfate(mnso4);Manganoussulfate,anhydrous;man-gro;ncic61143;sorba-spraymanganese Molecular Formula: MnO4S Molecular Weight: 151 CAS: 7785-87-7 EINECS: 232-089-9 This colourless deliquescent solid is a commercially significant manganese(II) salt. Approximately 260M kg/y were produced worldwide in 2005. It is the precursor to manganese metal and many chemical compounds. Mn-deficient soil is remediated with this salt. Like many metal sulfates, manganese sulfate forms a variety of hydrates: monohydrate, tetrahydrate, pentahydrate, heptahydrate. The monohydrate is most common. All of these salts are faintly pink. The pale color of Mn(II) salts is characteristic of high-spin complexes with the d5 configuration.