MnCl22H2O
Manganese(II) chloride dihydrate, with the formula MnCl2·2H2O, is an inorganic salt of manganese in the +2 oxidation state. It commonly appears as pale pink to colorless crystals that are soluble in water and tend to be hygroscopic. The compound forms as a dihydrate in the presence of water, and upon heating it losses its two water molecules to give the anhydrous salt; further heating can lead to hydrolysis and the formation of basic manganese chlorides.
Preparation and occurrence: MnCl2·2H2O is typically prepared by dissolving manganese compounds such as MnO, MnO2, or
Properties and reactions: The dihydrate is readily soluble in water. It serves as a convenient source of
Applications: In the laboratory, MnCl2·2H2O is used as a manganese(II) source for synthesis and catalysis, as
Safety: Soluble manganese(II) salts can be irritants to skin, eyes, and the respiratory tract. Inhalation of