SIST EN ISO 11337:2023 PDF

Name: SIST EN ISO 11337:2023 — Plastics - Polyamides - Determination of ε-caprolactam and ω-laurolactam by gas chromatography (ISO 11337:2023)
SKU: SIST EN ISO 11337:2023
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Plastics - Polyamides - Determination of ε-caprolactam and ω-laurolactam by gas chromatography (ISO 11337:2023)

Название (английский):

SIST EN ISO 11337:2023

Plastics - Polyamides - Determination of ε-caprolactam and ω-laurolactam by gas chromatography (ISO 11337:2023)

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 18
Дата публикации:: 21 февраля 2023 г.
Издание:: ISO 11337:2023
ICS:: 83.080.20

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Описание (английский):

This document specifies a method for determining ε‑caprolactam and ω‑laurolactam in polyamides by gas chromatography. It is applicable particularly to the determination of ε‑caprolactam in polyamide 6 and ω‑laurolactam in polyamide 12. Two variants of the basic method are specified. — Method A is an extraction method with boiling methanol, and the extract is injected into a gas chromatograph. — Method B is a method using a solvent, and the solution is injected into a gas chromatograph.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

EN ISO 11337:2023 (ISO 11337:2023) specifies gas-chromatographic methods for determining the lactam monomers ε‑caprolactam and ω‑laurolactam in polyamides. It is aimed particularly at polyamide 6 (ε‑caprolactam) and polyamide 12 (ω‑laurolactam). The third edition (2023) updates the 2010 version and is published by CEN/ISO for harmonized European and international use.

Key topics and technical requirements

Two validated variants of the basic GC method:

Method A (extraction): test portion is extracted with boiling methanol; the methanol extract is injected into a gas chromatograph. An internal standard (e.g., 1‑dodecanol or isopropanol, newly allowed in 2023) is used.
Method B (dissolution/solvent): the sample is dissolved in an appropriate solvent and the solution is injected into a gas chromatograph.

Instrumentation: Gas chromatography with suitable detectors and either packed or capillary columns (both explicitly addressed in the 2023 revision).

Sample preparation: grinding/milling to controlled particle size, sieving (reference to sieve sizes and ISO 565 for nominal openings), and use of extraction apparatus (Soxhlet‑type or vapour‑enveloping designs) where applicable.

Calibration and internal standards: procedures for preparing calibration and internal‑standard solutions and for peak evaluation are specified.

Quality aspects: method precision, solvent recovery, expression of results and required test report content are included.

Safety and conformity: users are reminded to follow normal laboratory practice and regulatory considerations.

Applications and users

Practical applications of EN ISO 11337:2023 include:

Quality control of polyamide resins and finished components to quantify residual monomer content.

Incoming raw‑material testing for polyamide 6 and polyamide 12 suppliers.

Product release testing for manufacturers in automotive, electrical, consumer goods and industrial plastics sectors.

R&D and failure analysis where residual lactam levels affect processing, mechanical properties, odour or regulatory compliance. Who will use it:

Analytical laboratories, polymer QC labs, contract testing labs

Polymer producers and compounders

Material engineers and product development teams concerned with polyamide purity

Related standards

ISO 472 - Plastics - Vocabulary (terms and definitions referenced)

ISO 565 - Test sieves - Nominal sizes of openings (sieving requirements for sample prep)

Published under the ISO/CEN Vienna Agreement; supersedes EN ISO 11337:2010.

Keywords: EN ISO 11337:2023, ISO 11337:2023, polyamides, ε‑caprolactam, ω‑laurolactam, gas chromatography, polyamide 6, polyamide 12, extraction method, Method A, Method B, 1‑dodecanol, isopropanol, Soxhlet.

SIST EN ISO 11337:2023 PDF

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Applications and users

Related standards

Технические детали

ISO 11337:2023

Plastics — Polyamides — Determination of ε-caprolactam and ω-laurolactam by gas chromatography

ISO 11337:2010

Plastics — Polyamides — Determination of e-caprolactam and w-laurolactam by gas chromatography

ISO 5658-2:2006/Amd 1:2011

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ISO 472:2013/Amd 1:2018

Plastics — Vocabulary — Amendment 1: Additional items