2113/1999 - Magnesium oxide, produced by the calcination of magnesium carbonate followed by arc-fusion, in the form of irregular granules ranging from colourless through yellowish to greyish brown. The granules consist of translucent to transparent crystalline particles of approximately 1 to 10 mm in size, with a density (bulk density) approximately 3,5 g/cm 3 and magnesium-oxide content at least 95 % by weight - The Trade Hub