Magnesium Oxide (MgO)
It is also called as milk of magnesia.
Preparation :
It is also called magnesia and obtained by heating natural magnesite.
MgCO3 --^--> MgO + CO2
Properties :
1. It is white powder.
2. Its m.p is 2850c . Hence used in manufacture of refractory bricks for furnaces. And it is acts as basic flux and facilitates the removal of acidic impurities of Si, P, and S from steel through slag formation.
3. It is very slightly soluble in water imparting alkaline reaction.
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