Reference number
ISO 15033:2018
© ISO 2025
International Standard
ISO 15033:2018
Plastics — Determination of caprolactam and its cyclic and linear oligomers by HPLC
Edition 3
2018-06
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Published (Edition 3, 2018)
This publication was last reviewed and confirmed in 2023. Therefore this version remains current.

ISO 15033:2018

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CHF 98
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Abstract

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.

General information

  • Status
     : Published
    Publication date
     : 2018-06
    Stage
    : International Standard confirmed [90.93]
  • Edition
     : 3
    Number of pages
     : 15
  • Technical Committee :
    ISO/TC 61/SC 5
    ICS :
    83.080.01 
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