Monodisperse nano MgO dispersion is widely used in advanced material synthesis due to its uniform particle size and high surface reactivity. It serves as an effective additive in ceramics and composites to enhance mechanical strength and thermal stability. In catalysis, it acts as a support or active component in reactions such as transesterification for biodiesel production and CO2 capture at low temperatures. Its high surface area and basic nature make it suitable for environmental applications, including the neutralization of acidic gases and removal of heavy metals from wastewater. Additionally, it is employed in flame retardant formulations, where it improves fire resistance in polymers by promoting char formation and suppressing smoke. The dispersion format allows for easy integration into liquid-based processes, enabling homogeneous distribution in coatings, inks, and functional films.