ISO INTERNATIONAL STANDARD 17070 IULTCS/IUC 25 Second edition 2015-02-15 Leather Chemical tests Determination of tetrachlorophenol-, trichlorophenol-, dichlorophenol-, monochlorophenol-isomers and pentachlorophenol content Cuir -Essais chimiques - Détermination de la teneur en isomeres de monochlorophenol, dichlorophenol, trichlorophenol tetrachlorophénol et en pentachlorophenol Reference numbers ISO 17070:2015(E) Iso IULTCS/IUC 25:2015(E) CS International Organization for Standardization Isee=Zhejang Insttute of Standardization 5956617 @IS02015 IS0 17070:2015(E) IULTCS/IUC 25:2015(E) COPYRIGHTPROTECTEDDOCUMENT @ISO2015 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested 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 copyright@iso.org Web www.iso.org Published in Switzerland DrganizationforStandardization Not for Resale, 2015/6/2 06:41:4 networking permited without license from IHS IS0 17070:2015(E) IULTCS/IUC 25:2015(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. ..1 2 Normative references ..1 3 Abbreviations 4 Principle ..1 5 Apparatus ..2 6 Reagents .2 6.1 Chlorinated phenol mix .2 7 Sampling and preparation of samples ..3 8 Procedure ..3 8.1 Steam-distillation. ..3 8.2 Liquid-liquid-extraction and acetylation. ..4 8.3 Preparation of calibration mixture for acetylated CP and TCG 4 8.4 Gas chromatography (GC) ..5 9 Expression of results ..5 10 Test report ..5 Annex A (informative) Chromatographic analyses .7 Annex B (informative) Reliability of the method .9 iii nsee=Zhejiang Institute of Standardization 5956617 thout license from IHS