Manganese chloride, also known as manganese chloride and manganese dichloride, is an inorganic substance with the molecular formula of MnCl2. The appearance of hydrated manganese chloride is rose monoclinic crystal; The appearance of anhydrous manganese chloride is peach crystal.

It is mainly used in pharmaceutical synthesis and feed auxiliary agent, analytical reagent, dye and pigment manufacturing; Smelting of magnesium alloy and aluminum alloy, production of brown and black bricks and tiles, pharmaceutical and dry battery manufacturing; It can also be used as microelement fertilizer in agriculture.