ISO 4629-3:2018

Binders for paints and varnishes — Determination of hydroxyl value — Part 3: Rapid test ISO 4629-3:2018

Publication date:   Oct 12, 2018

General information

90.60 Close of review   Mar 4, 2024


ISO/TC 35 Paints and varnishes

International Standard

87.060.20   Binders



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This document specifies a titrimetric method for determining the hydroxyl groups in resins and binders for paints and varnishes.
This method is primarily suitable for neutral media. Acidic products provide higher values; neutral products provide, through neutralization of the acidic carbamates, lower values. For these products, preliminary tests are performed to ensure the applicability of the method.

Life cycle


ISO 4629-3:2018
90.60 Close of review
Mar 4, 2024