SIST EN ISO 17234-1:2025 PDF

Name: SIST EN ISO 17234-1:2025 — Leather - Chemical tests for the determination of certain azo colourants in dyed leathers - Part 1: Determination of certain aromatic amines derived from azo colourants (ISO 17234-1:2024)
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Leather - Chemical tests for the determination of certain azo colourants in dyed leathers - Part 1: Determination of certain aromatic amines derived from azo colourants (ISO 17234-1:2024)

Название (английский):

SIST EN ISO 17234-1:2025

Leather - Chemical tests for the determination of certain azo colourants in dyed leathers - Part 1: Determination of certain aromatic amines derived from azo colourants (ISO 17234-1:2024)

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 32
Дата публикации:: 31 декабря 2024 г.
Издание:: ISO 17234-1:2024
ICS:: 59.140.30

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Описание (английский):

This document specifies a method to determine certain aromatic amines derived from azo colourants.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

EN ISO 17234-1:2024 - Leather - Chemical tests for the determination of certain azo colourants in dyed leathers - Part 1: Determination of certain aromatic amines derived from azo colourants - specifies a laboratory method to detect and quantify aromatic amines released by reductive cleavage of azo colourants in dyed leather. Published December 2024 and adopted by CEN, it supersedes EN ISO 17234-1:2020 and aligns with regulatory lists (e.g., EU Regulation 1907/2006 Annex XVII, Appendix 8 and GB 20400-2006).

Key topics and technical requirements

Scope: Applies to dyed leathers where azo dyes may release regulated aromatic amines.

Analytical principle: Reductive cleavage of azo bonds to liberate aromatic amines followed by extraction and chromatographic determination.

Main procedural steps:

Sample preparation and degreasing
Reductive cleavage of azo groups
Liquid–liquid extraction of liberated amines (alternate procedure without diatomaceous earth included)
Chromatographic analysis, system checks and calibration
Calculation, method reliability assessment and test reporting

Apparatus & reagents: Defined in the standard (referenced normative standards for sample prep and laboratory water quality).

Performance & validation: Calibration, evaluation, and reliability data are specified; informative annexes provide chromatographic guidance and interpretation aids.

Normative annexes: Annexes E and F (added in this edition) provide normative methods for determination of certain aromatic amines and free aromatic amines.

Applications and users

Who uses it:

Leather testing laboratories and chemical analysts
Tanneries and leather manufacturers performing internal quality control
Compliance and product-safety teams verifying conformity with REACH and national restrictions
Importers, retailers and certification bodies assessing chemical safety of leather goods

Practical uses:

Regulatory compliance (REACH / national bans on certain aromatic amines)
Supplier and incoming material testing to prevent contaminated batches
Safety risk assessment for consumer products (footwear, garments, upholstery)
Forensic or investigative chemistry where azo-dye cleavage products are of concern

Related standards

ISO 17234-2 (Part 2 - determination of 4-aminoazobenzene)

ISO 2418, ISO 4044 (sample preparation/positioning)

ISO 3696 (laboratory water quality)

Keywords: EN ISO 17234-1:2024, leather chemical tests, azo colourants, aromatic amines, REACH compliance, dyed leathers, reductive cleavage, chromatographic analysis.

SIST EN ISO 17234-1:2025 PDF

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Applications and users

Related standards

Технические детали

ISO 17234-1:2024

Leather — Chemical tests for the determination of certain azo colourants in dyed leathers — Part 1: Determina…

ISO 17234-1:2020

Leather — Chemical tests for the determination of certain azo colourants in dyed leathers — Part 1: Determina…

SIST EN ISO 17234-2:2011

Leather - Chemical tests for the determination of certain azo colorants in dyed leathers - Part 2: Determinat…

BS EN ISO 24181-1:2025

Rare earth. Determination of non-rare earth impurities in individual rare earth metals and their oxides. ICP-…

SIST EN ISO 4044:2017

Leather - Chemical tests - Preparation of chemical test samples (ISO 4044:2017)

SIST EN ISO 3696:1998

Water for analytical laboratory use - Specification and test methods (ISO 3696:1987)