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EVS-EN ISO 11337:2010

Plastics - Polyamides - Determination of e-caprolactam and w-laurolactam by gas chromatography (ISO 11337:2010)

General information

Withdrawn from 15.02.2023
Base Documents
ISO 11337:2010; EN ISO 11337:2010
Directives or regulations
None

Standard history

Status
Date
Type
Name
15.02.2023
Main
05.01.2011
Main
Main
EVS-EN ISO 11337:2004
This International Standard specifies a method for determining  ε-caprolactam and  ω-laurolactam in polyamides by gas chromatography. It is suitable particularly for the determination of  ε-caprolactam in polyamide 6 and ω-laurolactam in polyamide 12. Bearing in mind that gas chromatography offers a wide range of possible conditions, the method specified is that shown to have been suitable in practice. 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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