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.