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ISO 11337:2023

M00001953

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ISO 11337:2023 Plastics - Polyamides - Determination of -caprolactam and -laurolactam by gas chromatography

standard by International Organization for Standardization, 01/01/2023

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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.