Surface-treated hollow silica and method for producing surface-treated hollow silica

Abstract

Surface-treated hollow silica, having a peak area of an amine in chromatography being 70% or more of a theoretical value, and having a symmetry coefficient S of 8 or less in chromatography. A method for producing the surface-treated hollow silica, the method including: performing a surface treatment on untreated hollow silica, in which a value obtained by dividing a molecular weight of a silane coupling agent used in the surface treatment by the number of Si atoms contained in one molecule of the silane coupling agent is 100 to 300.

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