# ISO 1833-4:2006 — Withdrawn and superseded ISO standards For ISO 1833-4:2006, item title is Textiles — Quantitative chemical analysis — Part 4: Mixtures of certain protein and certain other fibres (method using hypochlorite); status code is 9599; successor is ISO 1833-4:2017; withdrawn / published date is 2006-10-04, recorded from its source on 2026-08-05. - **Identifier:** ISO 1833-4:2006 _(verified: appears in the quote below)_ - **Item title:** Textiles — Quantitative chemical analysis — Part 4: Mixtures of certain protein and certain other fibres (method using hypochlorite) _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 1833-4:2017 - **Withdrawn / published date:** 2006-10-04 _(verified: appears in the quote below)_ ## What the source says > 40563,IS,,ISO 1833-4:2006,Textiles — Quantitative chemical analysis — Part 4: Mixtures of certain protein and certain other fibres (method using hypochlorite),Textiles — Analyse chimique quantitative — Partie 4: Mélanges de certaines fibres protéiniques et de certaines autres fibres (méthode à l'hypochlorite),2006-10-04,1,['59.060.01'],ISO/TC 38,9599,"[6484,6483]",[70173],"['en','fr']",2,"
ISO 1833-4:2006 specifies a method, using hypochlorite, to determine the percentage of protein fibre, after removal of non-fibrous matter, in textiles made of binary mixtures of certain non-protein fibres and one protein fibre, as follows: wool, chemically-treated wool, other animal-hair fibres, silk, re ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).