SIST EN ISO 19070:2016 PDF

Name: SIST EN ISO 19070:2016 — Leather - Chemical determination of N-methyl-2-pyrrolidone (NMP) in leather (ISO 19070:2016)
SKU: SIST EN ISO 19070:2016
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Leather - Chemical determination of N-methyl-2-pyrrolidone (NMP) in leather (ISO 19070:2016)

Название (английский):

SIST EN ISO 19070:2016

Leather - Chemical determination of N-methyl-2-pyrrolidone (NMP) in leather (ISO 19070:2016)

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 12
Дата публикации:: 9 мая 2016 г.
ICS:: 59.140.30
Технический комитет:: IUSN - Leather

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Цена:180 €

Описание (английский):

ISO 19070:2016 specifies a method to determine the amount of N-methyl-2-pyrrolidone (NMP) in leather and leather components. This method may also be used for the determination of N-ethyl-2-pyrrolidone (NEP) in leather.

Abstract

Overview

Key Topics

Scope and Application

Chemical determination of N-methyl-2-pyrrolidone (NMP) in leather products and components using a standardised extraction and chromatographic quantification method.
Also applicable for N-ethyl-2-pyrrolidone (NEP) detection.
Supports regulatory compliance, particularly under EU REACH restrictions on NMP use.

Method Principle

Extraction of leather samples in acetone at 50 °C using an ultrasonic bath for 1 hour.
Subsequent chemical analysis through gas chromatography coupled with mass selective detection (GC-MS).
Quantification through a calibration curve prepared from NMP standards.

Required Equipment and Reagents

Analytical balance (accuracy to 0.0001 g)
Ultrasonic bath with temperature control
Sealable extraction containers suitable for acetone use
Gas chromatograph with a mass selective detector (GC-MS)
Solvents: acetone (analytical grade), and NMP standard of 99.5% purity or higher
Micro-pipettes, volumetric flasks, PTFE membrane filters, and vials

Procedure Highlights

Sample preparation in accordance with ISO 2418 and ISO 4044.
Sample size of approximately 1 gram, cut into small pieces (2-3 mm).
Extraction in acetone solvent at controlled temperature and duration.
Filtration of the extract and immediate analysis or storage at 4 °C for up to 24 hours.
Calibration using NMP solutions of known concentration to ensure precise quantification.

Quantification and Reporting

Calculation of NMP content as mg per kg of leather.
Method detection limit typically down to 5 mg/kg, suitable for monitoring low residual solvent levels.
Test reports must include reference to ISO 19070, test date, identification details, measured NMP content, detection limit, and any deviations from the method.

Applications

Leather manufacturers: To monitor residual chemical solvents ensuring product safety and regulatory compliance.
Quality control laboratories: For routine testing of leather batches to control NMP and NEP content.
Regulatory bodies: To verify adherence to chemical safety standards under EU REACH and other environmental health regulations.
Research institutions: For studying solvent retention and emission in leather materials.
Importers and exporters: To certify leather goods meet chemical limits demanded by international markets.

Related Standards

ISO 2418: Leather - Sampling location for chemical, physical, mechanical and fastness tests: Provides guidelines for representative leather sampling essential for reproducibility in testing.
ISO 4044: Leather - Preparation of chemical test samples: Details sample preparation methods which complement the procedures in ISO 19070.
Additional relevant EN and ISO standards related to leather chemical safety and environmental regulations assist in comprehensive quality management.

This standard is an essential reference for chemical testing in the leather sector, promoting safe use of chemicals, regulatory compliance, and enhanced product quality. By adopting ISO 19070:2016, organizations ensure accurate quantification of hazardous solvents, protecting consumers and supporting sustainable leather production.

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ISO 19070:2016

Действующий

Leather — Chemical determination of N-methyl-2-pyrrolidone (NMP) in leather

Overview ISO 19070:2016 sets out an internationally recognized method for the chemical determination of N-methyl-2-pyrrolidone (NMP) in leather and leather components. Developed by ISO in collaborati…

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SIST EN ISO 4044:2017

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

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SIST EN ISO 19070:2016 PDF

Abstract

Overview

Похожие стандарты

Key Topics

Scope and Application

Method Principle

Required Equipment and Reagents

Procedure Highlights

Quantification and Reporting

Applications

Related Standards

Технические детали

ISO 19070:2016

Leather — Chemical determination of N-methyl-2-pyrrolidone (NMP) in leather

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)