Magnesium Oxide Molecular formula: MgO.  

Magnesium Oxide 80% to 99% Grade is available in Tangshan Hanwei. Specially for friction material application.
Molecular weight: 40.30(according to international atomic weight list)
Appearance: White light powder. 
Features: Insoluble in water and ethanol, soluble in acid and ammonium salt, strong moisture absorption, absorb water and carbon dioxide if exposed in the air. 
Use: friction materials(making brake pad/brake lining/brake shoes/clutch disk).