| 摘要 |
PROBLEM TO BE SOLVED: To provide silica particles of a nanometer order having excellent dispersibility.SOLUTION: Provided are silica particles in which the volume average particle diameter of primary particles is 200 nm or lower and bulk density is 450 g/L. Though, in the silica particles of a nanometer order, almost the primary particles are coupled as they are, by regulating the bulk density to the range, the flocculated secondary particles can be made approach the primary particles. |
