Chemical equation for Magnesium oxide
The earliest known alkaline earth was lime (Latin calx), which is now known to be calcium oxide; it was used in ancient times in the composition of mortar. Magnesia (the name derives probably from Magnesia, a district of Thessaly in Greece), the oxide of magnesium, was shown to be an alkaline earth different from lime by the Scottish chemist Joseph Black in 1755; he observed that...
alumina lamp envelopes
...light. The necessary refractory properties can be found in alumina, but the material does not sinter to translucency, and residual pores that remain within the grains act to scatter light. With magnesia as a sintering aid, however, alumina sinters to translucency. Apparently, magnesia slows the migration of grain boundaries during sintering. Pores remain on these boundaries and are...
Basic refractories include magnesia, dolomite, chrome, and combinations of these materials. Magnesia brick is made from periclase, the mineral form of magnesia (MgO). Periclase is produced from magnesite (a magnesium carbonate, MgCO3), or it is produced from magnesium hydroxide (Mg[OH]2), which in turn is derived from seawater or underground brine solutions. Magnesia...
structure and properties
Roasting either magnesium carbonate or magnesium hydroxide produces the oxygen compound magnesium oxide, commonly called magnesia, MgO. It is a white solid used in the manufacture of high-temperature refractory bricks, electrical and thermal insulators, cements, fertilizer, rubber, and plastics. It is also used medically as a laxative and antacid.
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