ISO INTERNATIONAL STANDARD 21461 Third edition 2012-06-01 Rubber Determination of the aromaticity of oil in vulcanized rubber compounds Caoutchouc-Détermination de I'aromaticite deshuiles dansles mélanges vulcanisés Reference number ISO 21461:2012(E) ISO @ ISO 2012 py IHS under lic No reproduction n or networking permitted without license from IHS Not for Resale ISO 21461:2012(E) COPYRIGHTPROTECTEDDOCUMENT ISO2012 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO's member body in the country of the requester. ISO copyright office Case postale 56 · CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland ISO 2012-All rights reserved No reproductic etworking permitted without license from IHS Not for Resale ISO 21461:2012(E) Contents Page Foreword .iv 1 Scope 2 Normative references : Terms and definitions. 4 Reagents and materials 4.1 Extraction.. 4.2 Sample preparation reagents 5 Apparatus 6 Procedure.. 6.1 Sample extraction, 6.2 Extract purification 6.3 NMR analysis.. 7 Calculation 6 8 Test report. Annex A (informative) 1H NMR spectra of extracts from compounds containing aromatic oil (Figures A.1 and A.3) and MES oil (Figures A.2 and A.4).. 8 Annex B (informative) Preparation of clean samples of rubber compounds from tyres. Annex C (informative) Precision statement .18 Bibliography 19 ili e with I ense from IHS Not for Resale