ISO INTERNATIONAL STANDARD 105-X09 Fourth edition 1993-11-01 Textiles Tests for colour fastness - Part X09: Colour fastness to formaldehyde Textiles - Essais de solidité des teintures Partie X09: Solidité des teintures au formaldéhyde ISO Reference number ISO 105-X09:1993(E) No reproduction or networking permited without license from IHS Not for Resale S0105-X09:1993(E) Foreword ISO (the International Organization for Standardization) is a worldwide of preparing International Standards is normally carried out through ISsO technicalcommittees. 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 (lEC)onallmattersofelectrotechnicalstandardization. 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 105-X09 was prepared by Technical Committee ISO/TC 38, Textiles, Sub-Committee SC 1, Tests for coloured textiles and colorants. This fourth edition cancels sand dreplaces the third edition (ISO 105-X09:1987), of which it constitutes a minor revision. ISO 105 was previously published in thirteen "parts", each designated by a letter (e.g. "Part A"), with publication dates between 1978 and 1985. Each part contained a series of "sections", each designated by the re spective part letter and by a two-digit serial number (e.g. "Section Ao1"). These sections are now being republished as separate documents, them- nations. A complete list of these parts is given in ISO 105-A01. ISO 1993 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 per. mission in writing from the publisher. International Organization for Standardization Case Postale 56 · CH-1211 Geneve 20 · Switzerland Printed in Switzerland ii d without license from IHS Not for Resale ISO105-X09:1993(E) INTERNATIONAL STANDARD Textiles Tests for colour fastness Part X09: Colour fastness to formaldehyde Scope change in colour of the specimen is assessed with the 1 grey scale. 1.1 This part of sO 105 specifies a method for de- termining the resistance of the colour of textiles of all 4 Apparatus and materials kinds and in all forms to the action of formaldehyde vapour,as may be encountered in storehouseswhere 4.1 Glass bell-jar, having a capacity of 6 litres. fabrics are stored with materials which have under- gone a crease-resistant treatment. 4.2 Glass frame, for suspending the specimen. 1.2 This method is not suitable for assessing 4.3 China dish, of capacity 50 ml. changes in colour which may occur during crease- resist finishing with urea-formaldehyde products, or in 4.4 Formaldehyde solution (350 g/kg). subsequent treatment of the dyeing with solutions of formaldehyde. 4.5 Grey scale for assessing change in colour complying with ISO 105-A02. 2 Normative references Test specimen The following standards contain provisions which, through reference in this text, constitute provisions 5.1 If the textile to be tested is fabric, use a speci- of this part of ISO 105. At the time of publication, the men measuring 40 mm × 100 mm. editions indicated were valid. All standards are subject to revision, and parties to agreements based on this 5.2 If the textile to be tested is yarn, knit it into part of IsO 105 are encouraged to investigate the fabric and use a specimen measuring 40 mm x possibility of applying the most recent editions of the 100 mm, or make a wick of parallel lengths 100 mm standards indicated below. Members of IEC and ISO long and about 5 mm in diameter, tied near both mainta