ISO INTERNATIONAL STANDARD 5796 Second edition 2000-09-01 Rubber compounding ingredients Natural calcium carbonate Test methods Ingrédients de mélange du caoutchouc Carbonatedecalciumnaturel- Méthodes d'essai Reference number ISO 5796:2000(E) (So @ ISO 2000 ISO5796:2000(E) PDF disclaimer 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 trademark of 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 @ ISO 2000 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic 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 ISO 5796:2000(E) Contents Page Foreword. 1 Scope 2 Normativereferences 3 Sampling.. 2 Methods of test . 2 5 Test report .. Annex A (normative) Determination of total copper content Atomic absorption method... .11 Annex B (normative) Determination of total manganese content Atomic absorption method.... ......14 Annex C (normative) Determination of total iron content - Atomic absorption method. Annex D (informative) Classification of natural calcium carbonate and typical physical and chemical properties....... served ii ISO 5796:2000(E) Foreword IsO (the International Organization for Standardization) is a worldwide federation of national standards bodies (isO member bodies). The work of preparing International Standards is normally carried out through isO technical committees.Eachmemberbodyinterestedinasubjectforwhichatechnicalcommitteehasbeenestablishedhas liaison with IsO, also take part in the work. IsO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/lEC Directives, Part 3. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. 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 International Standard may be the subject of International Standard ISO 5796 was prepared by Technical Committee ISO/TC 45, Rubber and rubber products. Subcommittee SC 3, Raw materials (including latex) for use in the rubber industry. This second edition cancels and replaces the first edition (isO 5796:1990), of which it constitutes a technical revision Annexes A, B and C form a normative part of this International Standard. Annex D is for information only @ ISO 2000 - All rights reserved INTERNATIONAL STANDARD ISO 5796:2000(E) Rubber compounding ingredients Natural calcium carbonate - Test methods WARNING - Persons using this International Standard should be familiar with normal laboratory practice. with any national regulatory conditions. Scope 1.1This International Standard specifies the methods to be used for the evaluation of natural calcium carbonate (chalk or limestone) ground to a dry powder for use in the rubber industry. NOTE 1 Classification of natural calcium carbonate according to fineness and chemical purity and typical physical and chemical properties for use in the rubber industry are given in informative annex D. NOTE2 This International Standard does not cover calcium carbonates prepared by precipitatio