ISO INTERNATIONAL 105-Z08 STANDARD First edition 1995-06-15 Textiles -- Tests for colour fastness Part Z08: Determination of solubility and solution stability of reactive dyes in the presence of electrolytes Textiles - Essais de soliditeé des teintures - Partie Z08: Détermination de la solubilité et de la stabilite en solution des colorants réactifs en présence d'eélectrolytes ISO X Reference number ISO 105-Z08:1995(E) Copyright International Organization for Standardization No reproc rom IHS Not for Resale ISO 105-Z08:1995(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 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 105-Z08 was prepared by Technical Committee ISO/TC 38, Textiles, Subcommittee SC 1, Tests for coloured textiles and colorants. ISO 105 was previously published in thirteen "parts", each designated by a ietter (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. Annex A of this part of ISO 105 is for information only. ISO 1995 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 CasePostale56·CH-1211Geneve20·Switzerland Printed in Switzerland Standardizatior No reproduction or networking permitted without license from IHS Not for Resale INTERNATIONAL STANDARD ISO ISO 105-Z08:1995(E) Textiles - Tests for colour fastness Part Z08: Determination of solubility and solution stability of reactive dyes in the presence of electrolytes 1 Scope ture. A specified amount of the desired electrolyte solution is added and the resultant solution either fil- This part of ISO 105 describes a method for the de- tered immediately or stored for a specified time at a termination of the solubility and the solution stability specified temperature and subsequently filtered under of reactive dyes for use in batchwise and continuous suction. dyeing processes in the presence of electrolytes. The solubility and/or solution stability limits of the dye NOTE1 Several factors which may influence test resulits solution to the addition of electrolyte are determined are listed in annex A. by visual assessment of the filter residues and the measured flow-through time of the filtrate. 2 Normative references Apparatus and reagents The following standards contain provisions which, 4.1 Erlenmeyer flask, wide-mouthed, throughreferencein this text,constituteprovisions capacity of this part of isO 105. At the time of publication, the 500 ml, complying with ISO 1773. editions indicated were valid. All standards are subject to revision, and parties to agreements based on this 4.2 Heating bath, thermostatically controlled, with part of IsO 105 are encouraged to investigate the magnetic stirring bar 40 mm long by 6 mm diameter, possibility of applying the most recent editions of the speedofstirrer500r/minto600r/min