ISO INTERNATIONAL 105-X06 STANDARD Fourth edition 1994-09-01 Textiles Tests for colour fastness Part X06: Colour fastness to soda boiling Textiles Essais de solidité des teintures Partie X06: Solidite des teintures au débouillissage a I'air libre (so Referencenumber ISO 105-X06:1994(E) IS0105-X06:1994(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. Each member body interested in a subject for which a technical committee has been established has the right to be re- presented 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 a vote. International Standard ISO 105-X06 was prepared by Technical Committee ISO/TC 38, Textiles, Subcommittee SC 1, Tests for coloured textiles and colorants. This fourth edition cancels andreplaces the third edition (ISO 105-X06:1987), of which it constitutes a technical revision. ISO 105 was previously published in thirteen "parts", each designated by 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. ISO1994 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic ormechanical, including photocopying and microfilm, without permission in writing from the publisher. International Organization for Standardization Case Postale 56 · CH-1211 Geneve 20 : Switzerland Printed in Switzerland ii INTERNATIONAL STANDARD ISO ISO 105-X06:1994(E) Textiles -- Tests for colour fastness Part X06: Colour fastness to soda boiling Scope 3 Principle A specimen of the textile between specified undyed 1.1 This part of IsO 105 specifies a method for de- cloths is rolled around a glass rod and treated with termining the resistance of the colour of textiles of all boiling sodium carbonate solution with and without kinds and in all forms to the action of boiling dilute the addition of a reduction inhibitor.The composite sodium carbonate solution. The method is mainly ap- specimen is rinsed and dried. The change in colour plicable to natural and regenerated cellulose materials. of the specimen and the staining of the undyed cloths are assessed by comparison with the grey scales. 1.2 Two tests are provided: one with and the other without the addition of a reduction inhibitor Apparatus and reagents 2 Normative references 4.1 Vessel equipped with water-cooled reflux condenser of the finger type, to hold a cylindrical The following standards contain provisions which, specimen 40 mm long in the boiling solution. through reference in this text, constitute provisions of this part of ISO 105. At the time of publication, the 4.2 Glass rod, 5 mm to 8 mm in diameter. editions indicated were valid. All standards are subject to revision,and parties to agreements based on this part of ISO 105 are encouraged to investigate the 4.3 Desized undyed cotton fabric, measuring possibility of applying the most recent editions of the 40 mm × 100 mm. (This material is not cotton adja- cent fabric.) standards indicated below. Members of IEC and iSO maintain registers of currently valid International Standards. 4.4 Single-fibre adjacent fabric, complying with therelevantsectionsofFo1 to F08 ISO 105-A01:1994, Textiles Tests for colour fast IS0 105-F:1985, of the type under test (or if f