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Manganese(II) chloride describes a series of compounds with the formula MnCl2(H2O)x, where the value of x can be 0, 2, or 4. The tetrahydrate is the most common form of "manganese(II) chloride" and is the tetrahydrate with the formula MnCl2·4H2O
M 1476 (OTTO) Manganese(II) chloride, ≥99% Cas no 7773-01-5 - used in the production of dry cell batteries.