International Organization for Standardization (ISO)
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ISO 11337:2023
Scope
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.
ISO 11337:2023 Referenced Document
ISO 472 Plastics — Vocabulary — Amendment 1: Additional items
ISO 565 Test sieves; metal wire cloth, perforated metal plate and electroformed sheet; nominal sizes of openings
ISO 11337:2023 history
2023ISO 11337:2023 Plastics — Polyamides — Determination of ε-caprolactam and ω-laurolactam by gas chromatography
2010ISO 11337:2010 Plastics - Polyamides - Determination of ε-caprolactam and ω-Laurolactam by gas chromatography
2007ISO 11337:2004/Cor 1:2007 Plastics - Polyamides - Determination of -caprolactam and -laurolactam by gas chromatography; Technical Corrigendum 1
2004ISO 11337:2004 Plastics - Polyamides - Determination of -caprolactam and -laurolactam by gas chromatography