Cobalt Bromide (CoBr2)-Powder

Characteristic

Cobalt(II) bromide (CoBr₂) is an inorganic compound. In its anhydrous form, it is a green solid that is soluble in water, used primarily as a catalyst in some processes.

Chemical formula:CoBr₂, CoBr₂.6H₂O, CoBr₂.2H₂O

Molar mass 218.7412 g/mol (anhydrous)

                     326.74 g/mol (hexahydrate)

Appearance:Bright green crystals (anhydrous)

                     Red-purple crystals (hexahydrate)

Density 4.909 g/cm³ (anhydrous)

              2.46 g/cm³ (hexahydrate)

Melting point:678 °C (1,252 °F; 951 K) (anhydrous)

                        47 °C (hexahydrate)

Solubility in water: anhydrous: 66.7 g/100 mL (59 °C)

                                                 68.1 g/100 mL (97 °C)

                                 hexahydrate:113.2 g/100 mL (20 °C)

Crystal structure:Rhombohedral, hP3

Application

Used in cobalt smelting and also as a mordant.

CoBr2.pdf