Standard [WITHDRAWN]
DIN EN ISO 11337:2011-04
Plastics - Polyamides - Determination of ε-caprolactam and ω-laurolactam by gas chromatography (ISO 11337:2010); German version EN ISO 11337:2010
- German title
- Kunststoffe - Polyamide - Gaschromatographische Bestimmung von ε-Caprolactam und ω-Laurolactam (ISO 11337:2010); Deutsche Fassung EN ISO 11337:2010
- Publication date
- 2011-04
- Original language
- German
- Pages
- 22
- Publication date
- 2011-04
- Original language
- German
- Pages
- 22
- DOI
- https://dx.doi.org/10.31030/1721682
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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.
This document replaces DIN EN ISO 11337 Berichtigung 1:2009-07 , DIN EN ISO 11337:2004-09 .