ISO INTERNATIONAL STANDARD 26603 Second edition 2017-03 Plastics Aromatic isocyanates for use in the production of polyurethanes - Determination of total chlorine Plastiques - Isocyanates aromatiques utilisés pour la production de polyurethannes - Dosage du chlore total Reference number IS0 26603:2017(E) International Organization for Standardization @ IS0 2017 ee=ZHEJIANG INST OF STANDARDIZATION C1 5956617 mitted without license from IHS IS0 26603:2017(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 written permission. Permission can be requested from either ISO at the address below or ISO's member body in the country of the requester. ISOcopyrightoffice 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 Internationai ibrg DrganizationforStandardization icensee-ZHEJIANG INSTOF STANDARDIZAoISQ 07 - All rights reserved Not for Resale, 2017/5/11 01:37:04 networking permited withoutlicense from IHS IS0 26603:2017(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. 2 Normative references 3 Terms and definitions 4 Principle ..2 4.1 Test Method A .2 4.2 Test Method B .2 5 Interferences ..2 6 Sampling. .2 7 Test Method A - Total chlorine by oxygen bomb .2 7.1 Reagents. .2 7.2 Apparatus. .3 7.3 Procedure 4 7.4 Calculation. ..5 7.5 Precision and bias .6 7.5.1 Precision. 7.5.2 Bias ..6 8 Test Method B - Total chlorine by Schoniger oxygen flask .6 8.1 Reagents.. ..6 8.2 Apparatus .6 8.3 Procedure ..7 8.4 Calculation 8 8.5 Precision and bias ..8 8.5.1 Precision.. 8.5.2 Bias .8 9 Test report. .8 Bibliography 9 iii icensee=ZHEJIANG INST OF STANDARDIZATION C1 5956617 vided by IHS under lic se with ISt Not for Resale, 2017/5/11 01:37:04 ed without license from IHS