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ISO 11337:2023

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

General information
Valid from 16.01.2023
Directives or regulations
None

Standard history

Status
Date
Type
Name
16.01.2023
Main
26.11.2010
Main
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.
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