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Normas DIN – AENOR
DIN EN ISO 17226-2:2009-09

DIN EN ISO 17226-2:2009-09

Leather - Chemical determination of formaldehyde content - Part 2: Method using colorimetric analysis (ISO 17226-2:2008); German version EN ISO 17226-2:2008 + AC:2009

Cuir - Dosage chimique du formaldéhyde - Partie 2: Méthode par analyse colorimétrique (ISO 17226-2:2008); Version allemande EN ISO 17226-2:2008 + AC:2009

Leder - Chemische Bestimmung des Formaldehydgehalts - Teil 2: Kolorimetrische Analyse (ISO 17226-2:2008); Deutsche Fassung EN ISO 17226-2:2008 + AC:2009

Fecha Anulación:
2019-04 /Withdrawn
Equivalencias internacionales:

BVL B 82.02-18 (2016-07)

EN ISO 17226-2 (2008-05)

EN ISO 17226-2/AC (2009-05)

ISO 17226-2 (2008-05)

Relación con otras normas DIN:

Reemplazada por: DIN EN ISO 17226-2:2019-04

Resumen:
This part of ISO 17226 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 formaldehyde. Other compounds such as extracted dyes could interfere at 412 nm. When compared with ISO 17226-1, the two analytical methods should give similar trends but not necessarily the same absolute result. Therefore, in the case of dispute, ISO 17226-1 shall be used in preference.
Keywords:
Analysis, Authentication, Authenticity tests, Calibration, Chemical analysis and testing, Chemical properties, Colorimetry, Determination, Determination of content, Extraction, Fells, Formaldehyde, Formaldehyde concentration, High performance liquid chromatography, HPLC, Labelling, Laboratory ware, Leather, Leather products, Liquid chromatography, Mass concentration, Materials testing, Mathematical calculations, Methods of analysis, Photometry (chemical analysis), Reaction, Reagents, Sampling methods, Selective, Skin (body), Specimens, Stock solutions, Test specimens, Testing
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