Plastics — Polyols for use in the production of polyurethanes — Determination of degree of unsaturation by using iodine method
NORMA vydaná dňa 16.9.2024
Označenie normy: ISO 4764:2024
Dátum vydania normy: 16.9.2024
Počet strán: 9
Približná hmotnosť: 27 g (0.06 libier)
Krajina: Medzinárodná technická norma
Kategória: Technické normy ISO
Description / Abstract: 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.