ISO INTERNATIONAL STANDARD 6745 First edition 1990-12-15 ANSI Internat Doc Sec Zinc phosphate pigments for paints Specifications and methods of test Pigments de phosphate de zinc pour peintures -- Spécifications et methodes d'essai Reference number ISO 6745:1990(E) Copyright International Organization for Standardization Not for Resale ISO 6745:1990(E) Foreword IsO (the International Organization for Standardization) is a worldwide federation of national standards bodies (IsO member bodies). The work of preparing Internationat Standards is normally carried out through iso technical committees. Each member body interested in a subject for which a technical commitee has been established has the right to be represented on that committee. Internationat organizations, govern- mental and non-governmental, in liaison with IsO, also take part in the work. IsO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an Inter- national Standard requires approval by at least 75 % of the member bodies casting a vote International Standard IsO 6745 was prepared by Technical Committee iSO/TC35,Paintsandvarnishes. @ ISO 1990 All rights reserved. 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 the publisher. Internationa! Organization for Standardization Case Postale 56 . CH-1211 Geneve 20 · Switzerland Printed in Switzerland ii Copyright International Organization for Standardization NotforRes ISO 6745:1990(E) INTERNATIONAL STANDARD Zinc phosphate pigments for paints -- Specifications and methods of test aqueous extract (Printed together with Part 13 and Scope Part 17). This International Standard specifies the reguire- IsO 842:1984, Raw materials for paints and varnishes ments and the corresponding methods of test for ... Sampling. zinc phosphate pigments suitable for use in corrosion-inhibiting paints. Iso 3696:1987, Water for analytical laboratory use - Specification and test methods. 2 Normative references ls04793:1g80.Laboratorysintered(fritted)filters Porosity grading, classification and designation. The following standards contain provisions which, through reference in this text, constitute provisions of this international Standard. At the time of publi- 3 Definition cation, the editions indicated were valid. All stan- dards are subject to revision. and parties to For the purposes of this International Standard, the agreements based on this Internationai Standard following definition applies. are encouraged to investigate the possibility of ap- plying the most recent editions of the standards in- zinc phosphate pigment: A white corrosion-inhibiting dicated below. Members of 1EC and isO maintain pigment consisting either predominantiy of zinc registers of currently valid International Standards. phosphate dihydrate [Zn3(PO4)2.2H2O] or of a mix- ture of zinc phosphate dihydrate and zinc phosphate IsO 385-1:1984, Laboratory glassware -- Burettes - tetrahydrate [Zns(PO4)2.4H,O] or predominantly of Part 1: General requirements. zinc phosphate tetrahydrate, and free from extenders and other pigments. IsO 648:1977, Laboratory glassware One-mark pipettes. A Classification iso 787-5:1980, General methods of test for pigments and extenders --- Part 5: Determination of oil ab- In this International Standard, zinc phosphate pig- sorption value. ments are classified as one of the foliowing three types: IsO 787-7:1981, General methods of test for pigments and extenders -- Part 7: Determination of residue on Type 1: consisting predominantly of zinc phosphate sieve -- Water method ..- Manual procedure. dihydrate and exhibiting a loss on ignition at 600 °C of greater than 8,5 % (m/m) but less than or equal Iso 787