ISO 4629-3:2018Published

Binders for paints and varnishes — Determination of hydroxyl value — Part 3: Rapid test

Liants pour peintures et vernis — Détermination de l'indice d'hydroxyle — Partie 3: Méthode rapide

Abstract / scope

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.