ISO INTERNATIONAL STANDARD 11236 Secondedition 2017-08 Rubber compounding ingredients p-Phenylenediamine antidegradants (PPDs) Test methods Ingredients de melange du caoutchouc - Antidegradants du type p-phénylenediamine (PPDs) - Méthodes d'essai Reference number IS0 11236:2017(E) osi @ IS0 2017 IS0 11236:2017(E) COPYRIGHT PROTECTED DOCUMENT @ IS0 2017, Published in Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form writtenpermission.Permission canberequestedfromeitherIsOattheaddressbelow orIso'smemberbodyinthecountryof the requester. ISO copyrightoffice Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 [email protected] www.iso.org ii @ IS0 2017 - All rights reserved IS0 11236:2017(E) Contents Page Foreword ..iv 1 Scope .1 2 Normative references ...1 3 Terms and definitions 4 Abbreviated terms 5 Use and classification ..2 6 Sampling and repeat determinations ..3 7 Determination of purity by gas chromatography (GC) .3 7.1 General .3 7.2 Interference .3 7.3 Apparatus 3 7.4 Calibration and standardization .5 7.5 Procedure .5 7.5.1 Sample preparation .5 7.5.2 Procedure A .5 7.6 Calculation 11 7.7 Precision and bias. .11 7.8 Test report. .11 8 Determination of purity by high-performance liquid chromatography (HPLC) ..11 8.1 General. .11 8.2 Apparatus. .11 8.3 Reagents.. .12 8.4 Procedure .12 8.5 Calculation .14 8.6 Precision and bias .14 8.7 Test report. ..15 9 Determination ofash ..15 9.1 General .15 9.2 Apparatus .15 9.3 Procedure .15 9.4 Calculation 16 9.5 Precision and bias. .16 9.6 Test report. ..16 10 Determination of volatile matter .16 10.1 General .16 10.2 Apparatus ..17 10.3 Preparation of sample .17 10.4 Procedure. .17 10.5 Calculation. ..17 10.6 Precision and bias ..17 10.7 Test report. ..18 Annex A (informative) Precision and bias ..19 Bibliography .22 @ IS0 2017 - All rights reserved ii