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ISO 15033:2018

Plastics — Determination of caprolactam and its cyclic and linear oligomers by HPLC ISO 15033:2018

Publication date:   Jun 15, 2018

General information

90.93 Standard confirmed   Jun 7, 2023

ISO

ISO/TC 61/SC 5 Physical-chemical properties

International Standard

83.080.01   Plastics in general

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Published

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Scope

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.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 15033:2007

NOW

PUBLISHED
ISO 15033:2018
90.93 Standard confirmed
Jun 7, 2023