Manganese Sulfate MnSO4H2O
		The Material Safety Data Sheet classifies this chemical as a hazardous substance. Toxicological data indicates it is tumerigenic, mutagenic and teratogenic (adversely effects reproduction).

Toxicology and Carcinogenesis Studies of Manganese (II) Sulfate Monohydrate
in F344/N Rats and B6C3F1 Mice (Feed Studies)