Molecular Formula: MgO
Molecular Weight: 40.3
Properties: White amorphous powder. The melting point is 2800 ℃ and the boiling point is 3600 ℃. It is soluble in acid and ammonium salt solution, slightly soluble in water and alkaline solution. In the air it can turn into basic magnesium carbonate after absorbing moisture and carbon dioxide. After 1000 ℃ sintering it can convert to crystal
Applications: MgO is an efficient moisture absorbent used by many libraries for preserving books. It is also one of the raw materials for making cement in dry process plants. MgO is used as an insulator in industrial cables, as a basic refractory material for crucibles and as a principal fireproofing ingredient in construction materials. It is used as a reference white color in colorimetry, owing to its good diffusing and reflectivity properties. It may be smoked onto the surface of an opaque material to form an integrating sphere.
Specification:
|
Item
|
Index
|
|
Magnesium Oxide (min%)
|
93-95
|
|
Calcium Oxide (max%)
|
0.10
|
|
Hydrochloric Acid Insolubles Matter (max%)
|
0.08
|
|
150 μm Sieving Residue (max%)
|
0.02
|
|
Sulfate (As SO4 2- max%)
|
0.05
|
|
Fe Salts (As Fe max%)
|
0.01
|
|
Mn (max%)
|
0.003
|
|
Cl (max%)
|
0.12
|
|
Loss On Ignition (max%)
|
3.5
|
|
Bulk Density (g/ml)
|
0.167
|