ISO 1833-20:2018
(Main)Textiles - Quantitative chemical analysis - Part 20: Mixtures of elastane with certain other fibres (method using dimethylacetamide)
Textiles - Quantitative chemical analysis - Part 20: Mixtures of elastane with certain other fibres (method using dimethylacetamide)
This document specifies a method using dimethylacetamide to determine the mass percentage of elastane, after removal of non-fibrous matter, in textiles made of mixtures of: - certain elastane fibres with - cotton, viscose, cupro, modal, lyocell, polyamide, polyester or wool fibres. This method is not applicable when acrylic fibres are present. It is also possible to analyse mixtures containing certain elastane fibres by using the test methods described in ISO 1833-12 or ISO 1833-21.
Textiles — Analyse chimique quantitative — Partie 20: Mélanges d'élasthanne avec certaines autres fibres (méthode au diméthylacétamide)
Le présent document spécifie une méthode de détermination, au diméthylacétamide, de la masse exprimée en pourcentage d'élasthanne, après élimination des matières non fibreuses, dans les textiles composés de mélanges de: — certaines fibres d'élasthanne; avec — coton, viscose, cupro, modal, lyocell, polyamide, polyester ou fibres de laine. Cette méthode n'est pas applicable lorsque des fibres d'acrylique sont présentes. Il est également possible d'analyser des mélanges contenant certaines fibres d'élasthanne en utilisant les méthodes d'essai décrites dans l'ISO 1833‑12 ou l'ISO 1833‑21.
General Information
- Status
- Published
- Publication Date
- 25-Nov-2018
- Technical Committee
- ISO/TC 38 - Textiles
- Drafting Committee
- ISO/TC 38/WG 22 - Composition and chemical testing
- Current Stage
- 9093 - International Standard confirmed
- Start Date
- 20-Jun-2024
- Completion Date
- 13-Dec-2025
Relations
- Effective Date
- 06-Jun-2022
- Consolidated By
ISO/ASTM TR 52916:2022 - Additive manufacturing for medical - Data - Optimized medical image data - Effective Date
- 06-Jun-2022
- Effective Date
- 28-Nov-2015
Overview
ISO 1833-20:2018 is an international standard established by the International Organization for Standardization (ISO) that specifies a quantitative chemical analysis method for determining the mass percentage of elastane in textile mixtures. This method utilizes dimethylacetamide (DMA) as the key solvent to dissolve elastane fibres from mixtures containing elastane combined with specific other fibres. The standard applies to textiles comprising elastane mixed with cotton, viscose, cupro, modal, lyocell, polyamide, polyester, or wool fibres, but explicitly excludes textiles containing acrylic fibres.
This method is critical for manufacturers, quality control laboratories, and textile researchers requiring accurate composition analysis in elastane-containing fabrics. It offers a reliable, reproducible test procedure that ensures compliance with product specifications and supports consistent quality assurance in textile production.
Key Topics
- Scope: Defines applicability for textiles composed of elastane and selected fibre blends, excluding acrylic fibres, with alternative test options available through ISO 1833-12 and ISO 1833-21 for other mixtures.
- Principle: Elastane is selectively dissolved from a known dry mass of the textile sample using DMA. The remaining fibres form a residue which is filtered, washed, dried, and weighed. The elastane content is calculated by difference from the initial mass.
- Reagents and Safety: Use of dimethylacetamide (DMA) demands strict safety precautions due to its hazardous nature - proper handling protocols are emphasized.
- Apparatus Requirement: Standard laboratory equipment such as conical flasks with stoppers and heating apparatus capable of maintaining 60-65 °C temperatures is necessary.
- Test Procedure: Involves soaking the textile specimen in DMA, maintaining temperature conditions, filtering and washing residues, followed by precise mass measurement.
- Calculation and Results: Results are expressed as the percentage of elastane by mass after correcting for non-fibrous matter. Specific correction factors (d-values) are applied for wool (1.01) and cotton (1.02).
- Precision: The method offers high accuracy with confidence limits not exceeding ±1% at a 95% confidence level on homogeneous samples.
Applications
ISO 1833-20:2018 serves a broad range of practical applications in the textile industry:
- Quality Control: Enables manufacturers to verify the elastane content in blended textiles, ensuring product consistency and compliance with labeling requirements.
- Material Research: Assists textile scientists in analyzing fibre blends for development and innovation of elastane-containing fabrics.
- Regulatory Compliance: Supports adherence to international textile standards and regulations related to fibre composition disclosure.
- Supply Chain Transparency: Facilitates accurate fibre content disclosure for suppliers and buyers, improving traceability and trust in textile products.
- Troubleshooting: Helps resolve discrepancies in fabric performance by precisely identifying elastane content variation.
Related Standards
To ensure comprehensive textile analysis, ISO 1833-20:2018 complements and references other critical standards:
- ISO 1833-1: General principles of chemical testing for textile composition analysis.
- ISO 1833-12: Method for analysing mixtures of elastane and acrylic fibres.
- ISO 1833-21: Alternative procedures for mixtures containing certain elastane fibres.
- ISO 2076: Defines generic names for man-made fibres.
- ISO 6938: Provides generic names and definitions for natural textile fibres.
These related standards collectively provide a complete framework for the quantitative chemical analysis of textiles, accommodating a wide variety of fibre blends and methodologies.
By adhering to ISO 1833-20:2018, textile industry stakeholders gain access to a precise, standardized method to determine elastane content in multi-fibre textiles, supporting effective quality management and product integrity in global markets. This empowers manufacturers, laboratories, and researchers with reliable data critical to innovation and compliance in the dynamic textiles sector.
ISO 1833-20:2018 - Textiles — Quantitative chemical analysis — Part 20: Mixtures of elastane with certain other fibres (method using dimethylacetamide) Released:26. 11. 2018
ISO 1833-20:2018 - Textiles — Analyse chimique quantitative — Partie 20: Mélanges d'élasthanne avec certaines autres fibres (méthode au diméthylacétamide) Released:26. 11. 2018
Frequently Asked Questions
ISO 1833-20:2018 is a standard published by the International Organization for Standardization (ISO). Its full title is "Textiles - Quantitative chemical analysis - Part 20: Mixtures of elastane with certain other fibres (method using dimethylacetamide)". This standard covers: This document specifies a method using dimethylacetamide to determine the mass percentage of elastane, after removal of non-fibrous matter, in textiles made of mixtures of: - certain elastane fibres with - cotton, viscose, cupro, modal, lyocell, polyamide, polyester or wool fibres. This method is not applicable when acrylic fibres are present. It is also possible to analyse mixtures containing certain elastane fibres by using the test methods described in ISO 1833-12 or ISO 1833-21.
This document specifies a method using dimethylacetamide to determine the mass percentage of elastane, after removal of non-fibrous matter, in textiles made of mixtures of: - certain elastane fibres with - cotton, viscose, cupro, modal, lyocell, polyamide, polyester or wool fibres. This method is not applicable when acrylic fibres are present. It is also possible to analyse mixtures containing certain elastane fibres by using the test methods described in ISO 1833-12 or ISO 1833-21.
ISO 1833-20:2018 is classified under the following ICS (International Classification for Standards) categories: 59.060.01 - Textile fibres in general. The ICS classification helps identify the subject area and facilitates finding related standards.
ISO 1833-20:2018 has the following relationships with other standards: It is inter standard links to ISO 815-1:2014, ISO/ASTM TR 52916:2022, ISO 1833-20:2009. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
ISO 1833-20:2018 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 1833-20
Second edition
2018-12
Textiles — Quantitative chemical
analysis —
Part 20:
Mixtures of elastane with certain
other fibres (method using
dimethylacetamide)
Textiles — Analyse chimique quantitative —
Partie 20: Mélanges d'élasthanne avec certaines autres fibres
(méthode au diméthylacétamide)
Reference number
©
ISO 2018
© ISO 2018
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2018 – All rights reserved
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Reagents . 1
6 Apparatus . 2
7 Test procedure . 2
8 Calculation and expression of results . 2
9 Precision . 2
Bibliography . 3
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
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committee has been established has the right to be represented on that committee. International
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The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
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Any trade name used in this document is information given for the convenience of users and do
...
NORME ISO
INTERNATIONALE 1833-20
Deuxième édition
2018-12
Textiles — Analyse chimique
quantitative —
Partie 20:
Mélanges d'élasthanne avec
certaines autres fibres (méthode au
diméthylacétamide)
Textiles — Quantitative chemical analysis —
Part 20: Mixtures of elastane with certain other fibres (method using
dimethylacetamide)
Numéro de référence
©
ISO 2018
DOCUMENT PROTÉGÉ PAR COPYRIGHT
© ISO 2018
Tous droits réservés. Sauf prescription différente ou nécessité dans le contexte de sa mise en œuvre, aucune partie de cette
publication ne peut être reproduite ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique,
y compris la photocopie, ou la diffusion sur l’internet ou sur un intranet, sans autorisation écrite préalable. Une autorisation peut
être demandée à l’ISO à l’adresse ci-après ou au comité membre de l’ISO dans le pays du demandeur.
ISO copyright office
Case postale 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Genève
Tél.: +41 22 749 01 11
Fax: +41 22 749 09 47
E-mail: copyright@iso.org
Web: www.iso.org
Publié en Suisse
ii © ISO 2018 – Tous droits réservés
Sommaire Page
Avant-propos .iv
1 Domaine d’application . 1
2 Références normatives . 1
3 Termes et définitions . 1
4 Principe . 1
5 Réactifs . 2
6 Appareillage . 2
7 Mode opératoire d’essai. 2
8 Calcul et expression des résultats . 2
9 Fidélité . 2
Bibliographie . 3
Avant-propos
L’ISO (Organisation internationale de normalisation) est une fédération mondiale d’organismes
nationaux de normalisation (comités membres de l’ISO). L’élaboration des Normes internationales est
en général confiée aux comités techniques de l’ISO. Chaque comité membre intéressé par une étude
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L’ISO collabore étroitement avec la Commission électrotechnique internationale (IEC) en ce qui
concerne la normalisation électrotechnique.
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décrites dans les Directives ISO/IEC, Partie 1. Il convient, en particulier de prendre note des différents
critères d’approbation requis pour les différents types de documents ISO. Le présent document a été
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