SIST EN ISO 1833-29:2020

Textiles - Quantitative chemical analysis - Part 29: Mixtures of polyamide with polypropylene/polyamide bicomponent (method using sulfuric acid) (ISO 1833-29:2020)

This document specifies a method, using sulfuric acid, to determine the mass percentage of polyamide, after removal of non-fibrous matter, in textiles made of binary mixtures of
—     polyamide
with
—polypropylene/polyamide bicomponent.

Textilien - Quantitative chemische Analysen - Teil 29: Mischungen aus Polyamid mit Polypropylen/Polyamid-Bikomponente (Verfahren mit Schwefelsäure) (ISO 1833-29:2020)

Dieses Dokument legt ein Schwefelsäure-Verfahren zur Bestimmung des prozentualen Massenanteils an Polyamid, nach dem Abtrennen der nichtfaserigen Begleitstoffe, in Textilien aus binären Fasermischungen aus
- Polyamid
mit
- Polypropylen/Polyamid-Bikomponente
fest.

Textiles - Analyse chimique quantitative - Partie 29: Mélanges de polyamide avec bi composant polypropylene/polyamide (méthode à l’acide sulfurique) (ISO 1833-29:2020)

Le présent document spécifie une méthode de détermination, à l'acide sulfurique, de la masse, exprimée en pourcentage, de polyamide, après élimination des matières non fibreuses, dans les textiles composés de mélanges binaires de:
—          polyamide;
avec
—          bicomposant polypropylène/polyamide.

Tekstilije - Kvantitativna kemična analiza - 29. del: Mešanica poliamida z dvokomponentnim polipropilen/poliamidom (metoda z uporabo žveplene kisline) (ISO 1833-29:2020)

General Information

• Status: Published
• Public Enquiry End Date: 01-Dec-2019
• Publication Date: 01-Jul-2020
• ICS: 59.060.01 - Textile fibres in general
• ICS: 71.040.40 - Chemical analysis
• Technical Committee: ITEK - Textile and textile products
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 24-Jun-2020
• Due Date: 29-Aug-2020
• Completion Date: 02-Jul-2020
• Directive: 1007/2011 - Regulation (EU) No 1007/2011 of the European Parliament and of the Council of 27 September 2011 on textile fibre names and related labelling and marking of the fibre composition of textile products and repealing Council Directive 73/44/EEC and Directives 96/73/EC and 2008/121/EC of the European Parliament and of the Council
• Mandate: M/532 - [C(2015)1385] Standardisation request to the European Committee for Standardisation as regards methods for quantitative analysis of textile products composed of certain binary and ternary textile fibre mixtures
• Ref Project: EN ISO 1833-29:2020 - Textiles - Quantitative chemical analysis - Part 29: Mixtures of polyamide with polypropylene/polyamide bicomponent (method using sulfuric acid) (ISO 1833-29:2020)

Overview

EN ISO 1833-29:2020 specifies a quantitative chemical analysis method using sulfuric acid to determine the mass percentage of polyamide (after removal of non-fibrous matter) in textiles that are binary mixtures of polyamide with polypropylene/polyamide bicomponent. Adopted by CEN, this part of the ISO 1833 series is intended for laboratory and quality-control use where accurate, standardised content determination is required - notably in carpet and technical textile applications where bicomponent yarns are common.

Key Topics

• Scope: Applicable to mixtures of polyamide with polypropylene/polyamide bicomponent. The bicomponent typically contains 10 % to 25 % by mass of polyamide fibrils within a polypropylene matrix.
• Principle: Dissolve polyamide from a known dry mass of the specimen using 75 % (mass fraction) sulfuric acid; collect, wash, dry and weigh the remaining residue. The difference yields the polyamide/polypropylene bicomponent percentage.
• Reagents: Uses 75 % (approx. 73–77 % acceptable range) sulfuric acid, plus specified diluted sulfuric acid and diluted ammonia rinses as described in ISO 1833-29.
• Procedure summary: Add sulfuric acid (100 ml per gram of specimen), shake and stand periods at room temperature (three cycles including 30 min rests), filter through a weighed crucible, wash sequentially with diluted acid, water and diluted ammonia, rinse, dry and weigh the residue. Calculation follows ISO 1833-1 general instructions; the document specifies a correction factor d = 1.005 where required.
• Precision: On homogeneous mixtures, confidence limits are within ±1 percentage point at the 95 % confidence level.

Applications

• Quality control and composition verification for carpets and textile products containing polypropylene/polyamide bicomponent yarns.
• Laboratory testing for material declarations, procurement specifications and regulatory compliance.
• Comparative testing in research and development where accurate quantification of polyamide content is needed.

Practical benefits: a standardised, repeatable test method; compatibility with existing ISO 1833 test series procedures; clear precision parameters for interpreting results in QC workflows.

Related Standards

• ISO 1833-1 - General principles and calculation methods used across ISO 1833 parts.
• ISO 1833-7 - Method using formic acid for other polyamide mixtures (not suitable here because formic acid dissolves all polyamide components).
• ISO 1833-18 - Sulfuric acid based method used as reference for adapting operating conditions.
• ISO 2076 - Definitions for man-made fibre generic names (source for bicomponent definition).

This part of ISO 1833 is endorsed as EN ISO 1833-29:2020 by CEN and is intended as the harmonised test method for determination of polyamide in polyamide/ polypropylene-polyamide bicomponent textile mixtures.

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2020
Tekstilije - Kvantitativna kemična analiza - 29. del: Mešanica poliamida z
dvokomponentnim polipropilen/poliamidom (metoda z uporabo žveplene kisline)
(ISO 1833-29:2020)
Textiles - Quantitative chemical analysis - Part 29: Mixtures of polyamide with
polypropylene/polyamide bicomponent (method using sulfuric acid) (ISO 1833-29:2020)
Textilien - Quantitative chemische Analysen - Teil 29: Mischungen aus Polyamid mit
Polypropylen/Polyamid-Bikomponente (Verfahren mit Schwefelsäure) (ISO 1833-
29:2020)
Textiles - Analyse chimique quantitative - Partie 29: Mélanges de polyamide avec bi
composant polypropylene/polyamide (méthode à l’acide sulfurique) (ISO 1833-29:2020)
Ta slovenski standard je istoveten z: EN ISO 1833-29:2020
ICS:
59.060.01 Tekstilna vlakna na splošno Textile fibres in general
71.040.40 Kemijska analiza Chemical analysis
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 1833-29
EUROPEAN STANDARD
NORME EUROPÉENNE
June 2020
EUROPÄISCHE NORM
ICS 59.060.01
English Version
Textiles - Quantitative chemical analysis - Part 29:
Mixtures of polyamide with polypropylene/polyamide
bicomponent (method using sulfuric acid) (ISO 1833-
29:2020)
Textiles - Analyse chimique quantitative - Partie 29: Textilien - Quantitative chemische Analysen - Teil 29:
Mélanges de polyamide avec bicomposant Mischungen aus Polyamid mit Polypropylen/Polyamid-
polypropylene/polyamide (méthode à l'acide Bikomponente (Verfahren mit Schwefelsäure) (ISO
sulfurique) (ISO 1833-29:2020) 1833-29:2020)
This European Standard was approved by CEN on 22 May 2020.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 1833-29:2020 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 1833-29:2020) has been prepared by Technical Committee ISO/TC 38
"Textiles" in collaboration with Technical Committee CEN/TC 248 “Textiles and textile products” the
secretariat of which is held by BSI.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by December 2020, and conflicting national standards
shall be withdrawn at the latest by December 2020.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 1833-29:2020 has been approved by CEN as EN ISO 1833-29:2020 without any
modification.
INTERNATIONAL ISO
STANDARD 1833-29
First edition
2020-05
Textiles — Quantitative chemical
analysis —
Part 29:
Mixtures of polyamide with
polypropylene/polyamide
bicomponent (method using sulfuric
acid)
Textiles — Analyse chimique quantitative —
Partie 29: Mélanges de polyamide avec bicomposant polypropylène/
polyamide (méthode à l’acide sulfurique)
Reference number
ISO 1833-29:2020(E)
©
ISO 2020
ISO 1833-29:2020(E)
© ISO 2020
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
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ii © ISO 2020 – All rights reserved

ISO 1833-29:2020(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Reagents . 2
6 Apparatus . 2
7 Test procedure . 2
8 Calculation and expression of results . 2
9 Precision .
...