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 represented by the formula MnCl2·4H2O, but the anhydrous form and dihydrate MnCl2·2H2O are also known.
M 2467 (OTTO) Manganese(II) chloride, tetrahydrate, 99.99% Cas 13446-34-9 - used in the production of dry cell batteries.