ISO INTERNATIONAL STANDARD 591-1 First edition 2000-09-15 Titanium dioxide pigments for paints - Part 1: Specifications and methods of test Pigments de dioxyde de titane pour peintures Partie 1: Spécifications et méthodes d'essai Reference number ISO 591-1:2000(E) ISO @ ISO 2000 py IHS under lic itted without license from IHS Not for Resale ISO 591-1:2000(E) PDFdisclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this area. Adobe is a trademarkof Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event @ISO2000 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.ch Printed in Switzerland @ Iso 2000 - All rights reserved py IHS unde ermittedwithoutlicense from IHS Not for Resale ISO 591-1:2000(E) Contents Page Foreword. .iv 1 Scope 2 Normative references . 3 Term and definition ... 4 Classification. 4.1 Types.. 4.2 Grades. 5 Required characteristics and associated tolerances . 5.1 Appearance ..... 5.2 Other characteristics 6 Sampling. 7 Determination of titanium dioxide content .. 7.1 General... 7.2 Method A: Aluminium reduction method .... 7.3 Method B: Chromium(Il) chloride reduction method... 8 Test report .. 2 Copyright Intenafona Organizain for Standardizalinserved ii by IHS under cense from IHS Not for Resale ISO 591-1:2000(E) Foreword IsO (the International Organization for Standardization) is a worldwide federation of national standards bodies (isO committees. Each member body interested in a subject for which a technical committee has been established has liaison with IsO, also take part in the work. IsO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote Attention is drawn to the possibility that some of the elements of this part of isO 591 may be the subject of patent rights. IsO shall not be held responsible for identifying any or all such patent rights. International Standard ISO 591-1 was prepared by Technical Committee ISO/TC 35, Paints and varnishes Subcommittee SC 2, Pigments and extenders. This part of ISO 591 cancels and replaces IsO 591:1977, which has been technically revised. In contrast to IsO 591:1977, which specified the Nakazono reductor method for the determination of the titanium dioxide content and allowed other methods to be used by agreement between the interested parties, IsO 591-1 contains two methods (see clause 7). Part 1: Specifications and methods of test Part 2: Determination of the content of secondary constituents ional Organization for Standardizatior ISO2000-All rightsreserved INTERNATIONAL STANDARD ISO 591-1:2000(E) Titanium dioxide pigments for paints - Part 1: Specifications and methods of test 1 Scope paints. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of isO 591. For dated references, subsequent amendments to, or revisions of, any of these publications references, the latest edition of the normative document re