ISO/WD 23157-2

Determination of the silanol group content on the surface of fumed silica — Part 2: Thermogravimetric analysis method

Current stage: 20.60 Close of comment period Jan 23, 2026

Originator: ISO

Owner: ISO/TC 256 Pigments, dyestuffs and extenders

Type: International Standard

This document applies to the determination of the silanol content of hydrophilic fumed silica by thermogravimetric analysis.

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ISO/WD 23157-2
20.60 Close of comment period
Jan 23, 2026