This standard specifies a method for the determination of free and released formaldehyde in leathers. Based on high performance liquid chromatography (HPLC), this method is selective and insensitive to colored extracts and is intended for the precise quantification of formaldehyde.
The formaldehyde content is taken as the amount of free formaldehyde and formaldehyde extracted from the skin by hydrolysis in a water extract under standard conditions of use.
ISO 17226 consists of the following parts
ISO 17226-1 Leather - Chemical Determination of Fomaldehyde Content - Part 1: High Performance Liquid Chromatographic Method
This standard specifies a method for the determination of free and released formaldehyde in leathers. Based on high performance liquid chromatography (HPLC), this method is selective and insensitive to colored extracts and is intended for the precise quantification of formaldehyde. The formaldehyde content is taken as the amount of free formaldehyde and formaldehyde extracted from the skin by hydrolysis in a water extract under standard conditions of use.
ISO 17226-2 Chemical Determination of Formaldehyde Content in Leather - Part 2: Colorimetric Analysis Method
This standard 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 as the amount of free formaldehyde and formaldehyde extracted from the skin by hydrolysis in a water extract under standard conditions. This process is not absolutely selective for formaldehyde. Other compounds such as extracted dyes may interfere at 412 nm.
ISO 17226-3 Leather - Chemical Determination of Formaldehyde Content - Part 3: Determination of Formaldehyde Emission from Skin
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