ISO 4764:2024Published

Plastics — Polyols for use in the production of polyurethanes — Determination of degree of unsaturation by using iodine method

Plastiques — Polyols pour la production des polyuréthanes — Détermination du degré de non-saturation par la méthode à l'iode

Abstract / scope

This document specifies a method for quantifying the total unsaturation using an addition reaction of the interhalogen compound iodine monochloride (ICl), using glacial acetic acid as a solvent as a method for measuring the total unsaturation of a polyether polyol for polyurethanes. It is not applicable to unsaturated compounds that are conjugated with a carbonyl group, a carboxyl group, or a nitrile group.