ISO INTERNATIONAL STANDARD 2495 Second edition 1995-03-15 ANSl Internat Doc Soc Iron blue pigments Specifications and methods of test Pigments de bleu de Prusse --. Spécifications et methodes d'essai ISO Reference number ISO 2495:1995(E) No reproduction or networking permitted without license from IHS Not for Resale ISO 2495:1995(E) Foreword iso (the International Organization for Standardization) is a worldwide of preparing International Standards is normally carried out through Iso technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental 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 International Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard ISO 2495 was prepared by Technical Committee ISO/TC 35, Paints and varnishes, Subcommittee sC 2, Pigments and extenders. This second edition cancelsand replaces the first edition (ISO 2495:1972), which has been technically revised. Annex A of this International Standard is for information only. @ISO1995 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 the publisher. International Organization for Standardization Case Postale 56.CH-1211Geneve 20·Switzerland Printed in Switzerland ii Copyright No reproduction or networking permitted without license from IHS Not for Resale INTERNATIONAL STANDARD ISO ISO2495:1995(E) Iron blue pigments Specifications and methods of test Scope Iso 787-4:1981, General methods of test for pig- ments and extenders Part 4:Determination of This International Standard specifies the requirements acidity or alkalinity of the aqueous extract. and the corresponding methods of test for iron blue ISO 787-5:1980, General methods of test for pig- pigments. ments and extenders Part 5: Determination of oil absorptionvalue. Iso 787-16:1986, General methods of test for pig- mentsandextenders Part 16:Determinationof 2 Normative references relative tinting strength (or equivalent colouring value) and colour on reduction of coloured pigments - Vis- The following standards contain provisions which. ual comparison method. through reference in this text, constitute provisions of this International Standard. At the time of publi- Iso 842:—1), Raw materials for paints and varnishes cation,theeditions indicated werevalid.Allstandards Sampling. are subjecttorevision,and partiestoagreements based on this International Standard are encouraged Iso 1042:1983, Laboratory glassware -- -One-mark to investigate the possibility of applying the most re- volumetric flasks. centeditionsofthestandardsindicatedbelow. Members of IEC and ISO maintain registers of cur- ISO 3696:1987, Water for analytical laboratory use rently valid International Standards. Specificationandtestmethods. IsO 385-1:1984, Laboratory glassware - Burettes - IS0 8780-2:1990, Pigments and extenders -- Meth- Part 1: General requirements. ods of dispersion forassessment of dispersion char acteristics - Part 2: Dispersion using an oscillatory IsO 648:1977, Laboratory glassware One-mark shaking machine. pipettes. Iso 787-1:1982, General methods of test for pig- ments and extenders Part 1: Comparison of colour 3 Definition of pigments. Iso 787-2:1981, General methods of test for pig- For the purposes of this International Standard, the ments and extenders -- Part 2: Determination of following definition applies. matter volatile at 105 °C. 3.1 iron blue pi