Leather - Chemical determination of formaldehyde content - Part 2: Method using colorimetric analysis
NORM herausgegeben am 1.7.2019
Bezeichnung normen: ČSN EN ISO 17226-2
Zeichen: 793886
Katalog-Nummer: 507437
Ausgabedatum normen: 1.7.2019
Zahl der Seiten: 20
Gewicht ca.: 60 g (0.13 Pfund)
Land: Tschechische technische Norm
Kategorie: Technische Normen ČSN
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