This standard specifies the requirements, test methods, inspection rules, labeling, packaging, transportation, storage and shelf life of the feed additive manganese sulfate monohydrate. This standard applies to the feed additive manganese sulfate monohydrate produced with manganese ore as the main raw material. Molecular formula: MnSO,. Also, O. Relative molecular mass: 169.01 (according to the international relative atomic mass in 2007).