Magnesium oxide (MgO), or magnesia, is a white hygroscopic solid mineral that occurs naturally as periclase and is a source of magnesium (see also oxide).
M 5126 (OTTO) Magnesium oxide, 99.99% Cas 1309-48-4 - used for a variety of applications such as medical use, refractory materials, energy applications and in the preparation of magnesia nanoparticles.