| abstract |
An object of the present invention is to provide a spherical magnesium oxide having high sphericity, excellent moisture resistance and excellent fluidity of a resin composition when filled in a resin, and a method for manufacturing the same. The spherical magnesium oxide of the present invention contains 300 to 2000 ppm of boron, wherein the content of lithium is less than 15 ppm, the volume-based cumulative 50% particle size (D50) obtained by laser diffraction scattering particle size distribution measurement is in the range of 3 to 200 [mu]m, and the sphericity read from the SEM photograph is 1.00 to 1.20. |