EN ISO 182-4:2000

Plastics - Determination of the tendency of compounds and products based on vinyl chloride homopolymers and copolymers to evolve hydrogen chloride and any other acidic products at elevated temperatures - Part 4: Potentiometric method (ISO 182-4:1993)

The principle of the method is maintaining a test portion of the PVC at an agreed temperature in a nitrogen gas stream, absorbing the hydrogen chloride evolved in a given amount of an appropriate solution, and potentiometrically determining the amount of hydrogen chloride evolved in relation to the recorded change in pCl of the absorbing solution. The method is recommended for compounded PVC materials and products only, although it can be used for polymers in powder form under appropriate conditions.

Kunststoffe - Bestimmung der Neigung von Formmassen und Erzeugnissen auf der Basis von Vinyl-chlorid-Homopolymeren und -Copolymeren, bei erhöhten Temperaturen Chlorwasserstoff und andere saure Produkte abzugeben - Teil 4: Potentiometrisches Verfahren (ISO 182-4:1993)

Dieser Teil von ISO 182 legt ein Verfahren zur Bestimmung der thermischen Stabilität bei erhöhter Temperatur von Formmassen und Erzeugnissen fest, die auf der Grundlage von Vinylchlorid-Homopolymeren und -Copolymeren (im folgenden Text abgekürzt als PVC) hergestellt sind und die zum Chlorwasserstoffverlust neigen (Entwicklung von Chlorwasserstoff). Das Verfahren kann zur Qualitätskontrolle während der Herstellung und Umwandlung von PVC-Formmassen angewendet werden.

Plastiques - Détermination de la tendance des compositions à base d'homopolymères et copolymères du chlorure de vinyle à dégager du chlorure d'hydrogène et éventuellement d'autres produits acides à températures élevées - Partie 4: Méthode potentiométrique (ISO 182-4:1993)

Polimerni materiali - Ugotavljanje tendence zmesi in proizvodov na osnovi homo- in kopolimerov vinilklorida, da pri povišanih temperaturah sproščajo klorovodik ali druge kisle produkte - 4. del: Potenciometrijska metoda (ISO 182-4:1993)

General Information

• Status: Published
• Publication Date: 19-Sep-2000
• Withdrawal Date: 30-Mar-2001
• ICS: 83.080 - Plastics
• Technical Committee: CEN/TC 249 - Plastics
• Drafting Committee: CEN/TC 249 - Plastics
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 20-Sep-2000
• Completion Date: 20-Sep-2000
• Ref Project: SIST EN ISO 182-4:2001 - Plastics - Determination of the tendency of compounds and products based on vinyl chloride homopolymers and copolymers to evolve hydrogen chloride and any other acidic products at elevated temperatures - Part 4: Potentiometric method (ISO 182-4:1993)

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Kunststoffe - Bestimmung der Neigung von Formmassen und Erzeugnissen auf der Basis von Vinyl-chlorid-Homopolymeren und -Copolymeren, bei erhöhten Temperaturen Chlorwasserstoffund andere saure Produkte abzugeben - Teil 4: Potentiometrisches Verfahren (ISO 182-4:1993)Plastiques - Détermination de la tendance des compositions a base d'homopolymeres et copolymeres du chlorure de vinyle a dégager du chlorure d'hydrogene et éventuellement d'autres produits acides a températures élevées - Partie 4: Méthode potentiométrique (ISO 182-4:1993)Plastics - Determination of the tendency of compounds and products based on vinyl chloride homopolymers and copolymers to evolve hydrogen chloride and any other acidic products at elevated temperatures - Part 4: Potentiometric method (ISO 182-4:1993)83.080.20PlastomeriThermoplastic materialsICS:Ta slovenski standard je istoveten z:EN ISO 182-4:2000SIST EN ISO 182-4:2001en01-junij-2001SIST EN ISO 182-4:2001SLOVENSKI
STANDARD



SIST EN ISO 182-4:2001



SIST EN ISO 182-4:2001



SIST EN ISO 182-4:2001



SIST EN ISO 182-4:2001



INTERNATIONAL STANDARD ISO 182-4 First edition 1993-04-01 Plastics - Determination of the tendency of compounds and products based on Vinyl chloride homopolymers and copolymers to evolve hydrogen chloride and any other acidic products at elevated temperatures - Part 4: Potentiometric method Plas tiques - 06termination de Ia tendance des compositions 2 base d’homopolym&res et copolym&es du chlorure de vinyle 3 degager du chlorure d’h ydrogene et 6ven tuellemen t d’autres produits acides 2 temp&a tures elevees - Partie 4: M6 thode po ten tiom6 trique Reference number ISO 182-4:1993(E) SIST EN ISO 182-4:2001



ISO 182=4:1993(E) 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. Esch 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. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard ISO 182-4 was prepared by Technical Committee ISO/TC 61, Plastics, Sub-Committee SC 6, Ageing, Chemical and environ- mental resis tance. Together with the three other Parts of ISO 182, it cancels and replaces ISO Recommendation R l82:1970, of which the four Parts of ISO 182 consti- tute a technical revision. ISO 182 consists of the following Parts, under the general title Plas tics - Determination of the tendency of compounds and products based on Vinyl chloride homopolymers and copolymers to evolve hydrogen chloride and any other acidic products at elevated tempera tures: - Part 1: Congo red method - Part 2: pH method - Part 3: Conductometric method - Part 4: Potentiometric method Annexes A and B of this part of ISO 182 are for information only. 0 ISO 1993 All rights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electronie or mechanical, including photocopying and microfilm, without per- mission in writing from the publisher. International Organization for Standardization Case Postale 56 l CH-l 211 Geneve 20 l Switzerland Printed in Switzerland SIST EN ISO 182-4:2001



INTERNATIONAL STANDARD ISO 182=4:1993(E) Plastics - Determination of the tendency of compounds and products based on Vinyl chloride homopolymers and copolymers to evolve hydrogen chloride and any other acidic products at elevated temperatures - Part 4: Potentiometric method WARNING - The use of this part of ISO 182 may involve hazardous materials, operations and equipment. This part of ISO 182 does not purport to address all of the safety Problems associated with its use. lt is the responsibility of the user of this part of ISO 182 to establish appropriate safety and health practices and determine the applicability of regulatory limitations Prior to use. 1 Scope 1.1 This part of ISO 182 specifies a method for the determination of the thermal stability at elevated temperature of compounds and products based on Vinyl chloride homopolymers and copolymers (in the following text abbreviated as PVC) which undergo dehydrochlorination (the evolution of hydrogen chlor- ide). 1.2 The method may be used as a quality control test during manufacture and conversion of PVC com- pounds. lt may also be used for the characterization of PVC compounds and produ
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