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DIN Standards Committee Plastics

Overview

This 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.
The International Standard ISO 11337:2010 has been prepared by ISO/TC 61/SC 5/WG 11 "Analytical methods" (secretariat: NEN, Netherlands). CEN/TC 249 "Plastics", the secretariat of which is held by NBN (Belgium), is responsible for the European Standard. On the national level, Working Committee NA 054-01-03 AA "Physikalische, rheologische und analytische Prüfungen" ("Physical, rheological and analytical tests") of FNK is responsible for the standard.

Document: references other documents

Responsible national committee

NA 054-02-10 AA - Thermoplastic materials  

Responsible european committee

CEN/TC 249 - Plastics  

Responsible international committee

ISO/TC 61/SC 9/WG 8 - Polyamides