This document describes a high-performance liquid chromatography (HPLC) method for determining the concentrations of cyclic oligomers of caprolactam, from 0,01 % by mass upwards, and linear oligomers of caprolactam, from 5 mg/kg upwards, both up to and including the hexamer of caprolactam (n = 6), in samples of polyamide 6, caprolactam and mixtures of rearrangement products in water.
A second, significantly faster, HPLC method is included for determination of caprolactam and its cyclic dimer, based on the same principle and using the same equipment as the first method.
État actuel: PubliéeDate de publication: 2018-06
Comité technique: ISO/TC 61/SC 5 Propriétés physicochimiques
Acheter cette norme
|std 1 92||PDF + ePub|
|std 2 92||Papier|