# ISO 1833-18:2019 — Withdrawn and superseded ISO standards

For ISO 1833-18:2019, item title is Textiles — Quantitative chemical analysis — Part 18: Mixtures of silk with other protein fibres (method using sulfuric acid); status code is 9599; successor is ISO 1833-18:2020; withdrawn / published date is 2019-04-12, recorded from its source on 2026-08-05.

- **Identifier:** ISO 1833-18:2019 _(verified: appears in the quote below)_
- **Item title:** Textiles — Quantitative chemical analysis — Part 18: Mixtures of silk with other protein fibres (method using sulfuric acid) _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 1833-18:2020
- **Withdrawn / published date:** 2019-04-12 _(verified: appears in the quote below)_

## What the source says

> 73730,IS,,ISO 1833-18:2019,Textiles — Quantitative chemical analysis — Part 18: Mixtures of silk with other protein fibres (method using sulfuric acid),Textiles — Analyse chimique quantitative — Partie 18: Mélanges de soie avec d'autres fibres protéiques (méthode à l'acide sulfurique),2019-04-12,2,['59.060.01'],ISO/TC 38,9599,[40579],[79806],"['en','fr']",3,"<p>This document specifies a method, using sulfuric acid, to determine the mass percentage of silk, after removal of non-fibrous matter, in textiles made of binary mixtures of</p><p>— silk</p><p>with</p><p>— other protein fibres (e.g. wool or animal hair).</p>" 737

## 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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).