Method for producing spherical silica particles

A method for producing spherical silica particles, the method comprising:

• a raw material silica particle preparation step of preparing a liquid dispersion of raw material silica particles from a raw material solution obtained by dissolving silicic acid in a mixed solvent of water and an organic solvent in the presence of a basic substance formed from at least one of a quaternary ammonium and a base having a cyclic amidine structure;
• and
• a heating step of heating the liquid dispersion or the raw material silica particles obtained from the liquid dispersion through solid-liquid separation so as to remove an organic substance contained in the liquid dispersion, thereby preparing spherical silica particles, wherein
• the mixed solvent has a relative permittivity of 21 or higher and 40 or lower, and
• the basic substance is blended in a blending ratio of 0.3 or higher and 0.8 or lower in terms of molar ratio with respect to a silicon element derived from the silicic acid.