... Guaranteed delivery Free samples magnesium oxide Molecular formula: MgOMolecular weight 40.30Standard code: HG/T257394 technical indextechnical indexmagnesium oxide(MgO)content % ... absorption, absorb water andcarbon dioxide if exposed in the air.Use: suitable for rubber, cable & wire, dyeing, grease, glass-ceramic ... , cutommize according to the need of consumers. price for magnesium oxide-high purity