ISO 17226-2:2018 PDF

Scope: This document specifies a method for the determination of free and released formaldehyde in leathers. This method, based on colorimetric analysis, is not intended to be used for a precise quantification of formaldehyde. 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 formaldehyde. Other compounds such as extracted dyes could interfere at 412 nm.

ISO 17226-2:2018 Referenced Document

ISO 17226-1 Leather — Chemical determination of formaldehyde content — Part 1: Method using high-performance liquid chromatography*， 2021-02-01 Update
ISO 2418 Leather — Chemical, physical, mechanical and fastness tests — Position and preparation of specimens for testing*， 2023-02-06 Update
ISO 3696 Water for analytical laboratory use; Specification and test methods
ISO 4044 Leather — Chemical tests — Preparation of chemical test samples
ISO 4684 Leather — Chemical tests — Determination of volatile matter

2018 ISO 17226-2:2018 Leather — Chemical determination of formaldehyde content — Part 2: Method using colorimetric analysis
2009 ISO 17226-2:2008/cor 1:2009 Leather - Chemical determination of formaldehyde content - Part 2: Method using colorimetric analysis; Technical Corrigendum 1
2008 ISO 17226-2:2008 Leather - Chemical determination of formaldehyde content - Part 2: Method using colorimetric analysis