# ISO 11337:2004 — Withdrawn and superseded ISO standards

For ISO 11337:2004, item title is Plastics — Polyamides — Determination of e-caprolactam and w-laurolactam by gas chromatography; status code is 9599; successor is ISO 11337:2010; withdrawn / published date is 2004-05-13, recorded from its source on 2026-08-05.

- **Identifier:** ISO 11337:2004 _(verified: appears in the quote below)_
- **Item title:** Plastics — Polyamides — Determination of e-caprolactam and w-laurolactam by gas chromatography _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 11337:2010
- **Withdrawn / published date:** 2004-05-13 _(verified: appears in the quote below)_

## What the source says

> 33330,IS,,ISO 11337:2004,Plastics — Polyamides — Determination of e-caprolactam and w-laurolactam by gas chromatography,Plastiques — Polyamides — Détermination du e-caprolactame et du w-laurolactame par chromatographie en phase gazeuse,2004-05-13,1,['83.080.20'],ISO/TC 61/SC 5,9599,,[50595],"['en','fr']",14,"<p>ISO 11337:2004 specifies a method for determining epsilon-caprolactam and omega-laurolactam in polyamides by gas chromatography. It is suitable particularly for the determination of epsilon-caprolactam in polyamide 6 and omega-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

## Source

- https://isopublicstorageprod.blob.core.windows.net/opendata/_latest/iso_deliverables_metadata/csv/iso_deliverables_metadata.csv

Last verified: 2026-08-05. Review by: 2027-02-01.
Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).