Manganese Chloride (MnCl2)-Powder

Characteristic




Manganese(II) chloride is the dichloride salt of manganese, MnCl2. This inorganic chemical exists in the anhydrous form, as well as the dihydrate (MnCl2·2H2O) and tetrahydrate MnCl2·4H2O), with the tetrahydrate being the most common form.




Chemical formula：MnCl2

Molar mass：125.844 g/mol (anhydrous)

                       161.874 g/mol (dihydrate)

                       197.91 g/mol (tetrahydrate)

Appearance：pink solid (tetrahydrate)

Density：2.977 g/cm3 (anhydrous)

                2.27 g/cm3 (dihydrate)

                2.01 g/cm3 (tetrahydrate)

Melting point：654 °C (1,209 °F; 927 K) (anhydrous)

                          dihydrate dehydrates at 135 °C

                           tetrahydrate dehydrates at 58 °C

Boiling point：1,225 °C (2,237 °F; 1,498 K)

Solubility in water：63.4 g/100 ml (0 °C)

                                 73.9 g/100 ml (20 °C)

                                 88.5 g/100 ml (40 °C)

                                 123.8 g/100 ml (100 °C)

Solubility：slightly soluble in pyridine, soluble in ethanol

                   insoluble in ether

Magnetic susceptibility (χ)：+14,350·10−6 cm3/mol




Application




Manganese chloride is mainly used in the production of dry cell batteries. It is the precursor to the antiknock compound methylcyclopentadienyl manganese tricarbonyl.