# ISO 17226-2:2008 — Withdrawn and superseded ISO standards For ISO 17226-2:2008, item title is Leather — Chemical determination of formaldehyde content — Part 2: Method using colorimetric analysis; status code is 9599; successor is ISO 17226-2:2018; withdrawn / published date is 2008-04-23, recorded from its source on 2026-08-05. - **Identifier:** ISO 17226-2:2008 _(verified: appears in the quote below)_ - **Item title:** Leather — Chemical determination of formaldehyde content — Part 2: Method using colorimetric analysis _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 17226-2:2018 - **Withdrawn / published date:** 2008-04-23 _(verified: appears in the quote below)_ ## What the source says > 43871,IS,,ISO 17226-2:2008,Leather — Chemical determination of formaldehyde content — Part 2: Method using colorimetric analysis,Cuir — Dosage chimique du formaldéhyde — Partie 2: Méthode par analyse colorimétrique,2008-04-23,1,['59.140.30'],IULTCS,9599,[31292],[73709],"['en','fr']",7,
ISO 17226-2:2008 specifies a method for the determination of free and released formaldehyde in leathers. This method is based on colorimetric analysis.
The formaldehyde content is taken to be the quantity of free-formaldehyde and formaldehyde extracted through hydrolysis contained in a water extract from the leather under standard conditions
This process is not absolutely selective for formalde ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).