ISO INTERNATIONAL STANDARD 1408 sedto Third edition BRI 1995-10-01 Demo by 7 Thomson Reuters (Scientific), I Inc., Rubber -Determination of carbon black content Pyrolytic and chemical degradation methods Caoutchouc-Dosagedu noirde carboneMethode pyrolytiqueet downloaded méthodespardegradationchimique . No further reproduction n or distribution is permited. ISo Uncontrolled when Reference number ISO 1408:1995(E) printe Copyrighted material licensed to BR Demo by Thomson Reuters (Scientfic), Inc. IS01408:1995(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 isnormally 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 , subscriptions.techstreet.com, represented onthat committee.International organizations,governmental and non-governmental, in liaison with isO,also take part in the work. Iso collaborates closelywith 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. , downloaded on Nov-27-2014 by James Madison. No further reproduction or distribution is permited. Uncontrlled when printe ISO/TC45,Rubberandrubberproducts. This third edition the edition cancels and replaces second (IS0 1408:1987), of which it constitutes a minor revision. ISO1995 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilzed in any form or by any means, electronic or mechanical, including photocopying and microfilm, without perrnission in writing from the publisher. International OrganizationforStandardization Case Postale56·CH-1211Geneve 20·Switzerland Printed in Switzerland copyi INTERNATIONALSTANDARDISO ISO1408:1995(E) Rubber -- Determination of carbon black content - Pyrolytic and chemical degradation methods (Scientific), WARNING-Persons using this International Standard should be familiar with normal laboratory Inc. practice.This standard does notpurportto address all of the safety problems,if any,associated with its use.It is the responsibilityof the userto establishappropriate safetyand healthpractices andtoensurecompliancewithanynational regulatoryconditions. Scope -fluorosiliconerubbers; 1 chlorosulfonated polyethylenes containing less than 30 % (m/m) of chlorine. 1.1This International Standard specifies a pyrolytic method (A)and two chemical degradation methods (B The precision of this method may be affected if min- and C) forthe determination of the carbon black con- eral fillers, e.g.alumina or calcium carbonate, are tent of rubber. present which decompose or dehydrate, or form vol- atile halides in the case of halogenated polymers, at thepyrolysis temperature. 1.2Method A is preferred and should be used for thefollowing polymers,except when certain com- The method cannot be used for either chloroprene pounding materials such as lead and cobalt salts, rubbers or butadiene-nitrile rubbers having an acrylic graphitic carbon blacks,phenolic and other resins, acid nitrile content greater than 30 % (m/m). bitumen,or cellulose,etc.,which cause the formation of a carbonaceous residue during pyrolysis,are pre- 1.3Method B is chiefly intended to be used with sent: samples not amenable to the pyrolytic method A, al- though it can be used for all samples based on un- -polyisoprene,naturalorsynthetic; saturated rubbers except for isobutylene-isoprene copolymers. polybutadiene; - styrene-butadiene copolymers; 1.4Method C is relatively hazardous and should be used only for the analysis of samples based on butyl rubber: isobutylene-isoprenecopolymersand ethylene propylene copolymers