NF EN ISO 17234-2
Leather - Chemical tests for the determination of certain azo colorants in dyed leathers - Part 2 : determination of 4-aminoazobenzene
ISO 17234-2:2011 is supplementary to ISO 17234-1 and describes a special procedure to detect the use of certain azo colorants in commodities, which can release 4-aminoazobenzene. The procedure also detects 4-aminoazobenzene (Solvent Yellow 1) which is already available as free amine in commodities without reducing pretreatment. Azo colorants that are able to form 4-aminoazobenzene generate, under the conditions of ISO 17234‑1, the amines aniline and 1,4-phenylenediamine. The presence of these 4-aminoazobenzene colorants cannot be reliably ascertained without additional information (e.g. the chemical structure of the colorant used) or without a special procedure.
ISO 17234-2:2011 is supplementary to ISO 17234-1 and describes a special procedure to detect the use of certain azo colorants in commodities, which can release 4-aminoazobenzene. The procedure also detects 4-aminoazobenzene (Solvent Yellow 1) which is already available as free amine in commodities without reducing pretreatment.
Azo colorants that are able to form 4-aminoazobenzene generate, under the conditions of ISO 17234‑1, the amines aniline and 1,4-phenylenediamine. The presence of these 4-aminoazobenzene colorants cannot be reliably ascertained without additional information (e.g. the chemical structure of the colorant used) or without a special procedure.
- Avant-proposiv
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1 Domaine d'application1
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2 Références normatives1
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3 Généralités1
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4 Principe2
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5 Précautions concernant la sécurité2
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6 Appareillage2
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7 Réactifs3
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8 Échantillonnage4
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9 Mode opératoire4
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9.1 Dégraissage4
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9.2 Coupure par réduction4
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9.3 Séparation et concentration du 4-aminoazobenzène4
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9.4 Solution d'étalonnage5
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9.5 Vérification du système d'analyse5
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9.6 Analyses chromatographiques5
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10 Évaluation5
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10.1 Calcul à l'aide d'un étalon interne5
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10.2 Calcul sans l'aide d'un étalon interne6
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10.3 Fiabilité de la méthode6
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11 Rapport d'essai6
- Annexe A (informative) Analyses chromatographiques7
- Annexe B (informative) Fiabilité de la méthode14
- Annexe C (informative) Guide d'évaluation - Interprétation des résultats d'analyse15
- Bibliographie16
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