prEN ISO 3451-5
(Main)Plastics - Determination of ash - Part 5: Poly(vinyl chloride) (ISO/DIS 3451-5:2024)
Plastics - Determination of ash - Part 5: Poly(vinyl chloride) (ISO/DIS 3451-5:2024)
This part of ISO 3451 specifies three methods for the determination of the ash of poly(vinyl chloride). The general procedures given in ISO 3451-1 are followed. For ash, method A is used. For sulfated ash, methods B and C are used. All three methods are applicable to resins, compounds and finished products. Methods B and C are applicable when lead-containing compounds are present.
Kunststoffe - Bestimmung der Asche - Teil 5: Polyvinylchloride (ISO/DIS 3451‑5:2024)
Plastiques - Détermination du taux de cendres - Partie 5: Poly(chlorure de vinyle) (ISO/DIS 3451-5:2024)
L'ISO 3451-5:2002 spécifie trois méthodes pour la détermination du taux de cendres du poly(chlorure de vinyle). Les modes opératoires généraux donnés dans l'ISO 3451-1 sont suivis. Pour les cendres, on utilise la méthode A, tandis que pour les cendres sulfatées, on applique les méthodes B et C. Les trois méthodes peuvent être utilisées pour les résines, les compositions et les produits finis. Les méthodes B et C sont recommandées en présence de composés contenant du plomb.
Polimerni materiali - Določevanje pepela - 5. del: Polivinilklorid (ISO/DIS 3451-5:2024)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-april-2024
Polimerni materiali - Določevanje pepela - 5. del: Polivinilklorid (ISO/DIS 3451-
5:2024)
Plastics - Determination of ash - Part 5: Poly(vinyl chloride) (ISO/DIS 3451-5:2024)
Kunststoffe - Bestimmung der Asche - Teil 5: Polyvinylchloride (ISO/DIS 3451-5:2024)
Plastiques - Détermination du taux de cendres - Partie 5: Poly(chlorure de vinyle)
(ISO/DIS 3451-5:2024)
Ta slovenski standard je istoveten z: prEN ISO 3451-5
ICS:
83.080.20 Plastomeri Thermoplastic materials
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
DRAFT
International
Standard
ISO/DIS 3451-5
ISO/TC 61/SC 5
Plastics — Determination of ash —
Secretariat: DIN
Part 5:
Voting begins on:
Poly(vinyl chloride) 2024-02-05
Voting terminates on:
Plastiques — Détermination du taux de cendres —
2024-04-29
Partie 5: Poly(chlorure de vinyle)
ICS: 83.080.20
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS.
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION.
Reference number
ISO/DIS 3451-5:2024(en)
DRAFT
ISO/DIS 3451-5:2024(en)
International
Standard
ISO/DIS 3451-5
ISO/TC 61/SC 5
Plastics — Determination of ash —
Secretariat: DIN
Part 5:
Voting begins on:
Poly(vinyl chloride)
Voting terminates on:
Plastiques — Détermination du taux de cendres —
Partie 5: Poly(chlorure de vinyle)
ICS: 83.080.20
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
© ISO 2024
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
BE CONSIDERED IN THE LIGHT OF THEIR
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
or ISO’s member body in the country of the requester.
NATIONAL REGULATIONS.
ISO copyright office
RECIPIENTS OF THIS DRAFT ARE INVITED
CP 401 • Ch. de Blandonnet 8
TO SUBMIT, WITH THEIR COMMENTS,
CH-1214 Vernier, Geneva
NOTIFICATION OF ANY RELEVANT PATENT
Phone: +41 22 749 01 11
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION.
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland Reference number
ISO/DIS 3451-5:2023(en)
ii
ISO/DIS 3451-5:2023(en)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
4.1 Method A (direct calcination) .1
4.2 Method B (calcination, with sulfuric acid treatment after combustion) .2
4.3 Method C (calcination, with sulfuric acid treatment before combustion) .2
5 Reagents (for methods B and C only) . 2
6 Apparatus . 2
7 Safety precautions. 3
8 Procedure . 3
8.1 Test portion .3
8.2 Method A (determination of unsulfated ash) .3
8.3 Method B (determination of sulfated ash) .4
8.4 Method C (determination of sulfated ash) .5
9 Number of determinations . 5
10 Expression of results . 5
11 Accuracy and precision . 6
12 Test report . 6
Annex A (informative) Summary of test results for chalk-filled PVC . 7
iii
ISO/DIS 3451-5:2023(en)
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 through
ISO technical committees. Each member body interested in a subject for which a technical committee
has been established has the right to be represented on that committee. International organizations,
governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely
with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
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 editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent
rights identified during the development of the document will be in the Introduction and/or on the ISO list of
patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions
related to conformity assessment, as well as information about ISO's adherence to the World Trade
Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 5, Physical-
chemical properties.
This third edition cancels and replaces the second edition (ISO 3451-5:2002), which has been technically
revised.
The main changes are as follows:
— the test conditions have been adapted to relevant fillers;
— the thermobalance has been added as alternative method.
A list of all parts in the ISO 3451 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
iv
DRAFT International Standard ISO/DIS 3451-5:2023(en)
Plastics — Determination of ash —
Part 5:
Poly(vinyl chloride)
WARNING — The use of this document may involve hazardous chemicals, materials, operations or
equipment. This standard does not purport to address the safety problems associated with its use.
It is the responsibility of the user of this standard to establish proper safety and health practices
and determine the application of regulatory limitations prior to use. Poly(vinyl chloride) evolves
hydrogen chloride on thermal decomposition and precautions should be taken to avoid inhalation of
these or other fumes.
1 Scope
This document specifies three methods for the determination of the ash of poly(vinyl chloride). The general
procedures given in ISO 3451-1 are followed. For ash, method A is used. For sulfated ash, methods B and C
are used. All three methods are applicable to resins, compounds and finished products. Methods B and C are
applicable when lead-containing compounds are present.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes
requirements of this document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
ISO 3451-1, Plastics — Determination of ash — Part 1: General methods
ISO 11358-1, Plastics — Thermogravimetry (TG) of polymers — Part 1: General principles
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
4 Principle
4.1 Method A (direct calcination)
The organic matter in a test portion is burnt off and the residue is heated at a specific temperature given
in Table 1 until constant mass is reached. This method may be used with a muffle or microwave furnace or
with a thermobalance.
ISO/DIS 3451-5:2023(en)
Table 1 — Calcination temperatures for method A
Temperature
Filler system
°C
Unfilled 950
a
Glass fibres / Glass bubbles 625
a
Talc powder and other fillers except calcium carbonate 950
b
Calcium carbonate 1 100
b
Mixtures with calcium carbonate 1 100
a
The test temperature shall allow for further investigations according to filler structure.
b
The test temperature of 1 100 °C is required for formulations containing calcium carbonate only.
4.2 Method B (calcination, with sulfuric acid treatment after combustion)
The organic matter in a test portion is burnt off, the residue is converted into sulfates using concentrated
sulfuric acid and, finally, the residue is heated at 950 °C until constant mass is reached.
4.3 Method C (calcination, with sulfuric acid treatment before combustion)
The organic matter in a test portion is burnt off after adding concentrated sulfuric acid and the residue is
heated at 950 °C until constant mass is reached. This method is recommended over method B because of the
better reproducibility of the results.
Method B or method C should be used if lead-containing compounds are present. They are not recommended
to be used with a thermobalance.
5 Reagents (for methods B and C only)
5.1 Sulfuric acid, density 1,84 g/ml, analytical grade.
5.2 Acetic acid, 100 %, analytical grade.
WARNING — Care should be taken in handling sulfuric acid and acetic acid.
6 Apparatus
Apparatus as specified in ISO 3451-1, and in particular:
6.1 Crucible of silica, platinum or porcelain, diameter of upper part 35 mm to 75 mm. The size shall
be such that the crucible is not more than half-filled by the test po
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.