The chemical manganese ii sulfate soluble in water is an inorganic compound with the formula MnSO4
Manganese sulfate is produced by acidolysis of pyrolusite with sulfuric acid. The resulting manganese dioxide is roasted in a reduction roaster to convert it to the hydroxide form, and filtered to remove any impurities. The hydroxide is reacted with water to form the sulfate. Manganese sulfate is used in dry cell batteries, as a fertilizer and livestock supplement where soil is deficient in manganese, in some glazes, varnishes, and ceramics, and as a fungicide. It is also an ingredient in some dietary supplements and is a food fortifier.
This substance is a listed hazardous air pollutant in the Clean Air Act. Long-term exposure can cause lung damage and gastrointestinal irritation. It is also known to cause manganese poisoning in animals. This can occur in males through the development of hepatotoxicity and impaired cognitive function. High levels of manganese can also lead to obstructive jaundice in infants, which can be fatal if not treated promptly.