ISO INTERNATIONAL STANDARD 893 Second edition 1989-11-15 ANsI Infernaf Doc Sect Surface active agents - Technical alkane sulfonates - Methods of analysis Agents de surface - Alcanesulfonates techniques -- Methode d'analyse Reference number ISO 893 : 1989 (E) No reproduction or networking permitted without license from IHS Not for Resale ISO893 : 1989 (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 represented on that committee. International 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 approval before their acceptance as International Standards by the ISo Council. They are approved in accordance with ISO procedures requiring at least 75 % approval by the member bodies voting. International Standard ISO 893 was prepared by Technical Committee ISO/TC 91, Surface active agents. This second edition cancels and replaces the first edition (iso 893 : 1978), of which it constitutes a minor revision. Annexes A and B of this International Standard are for information only. ISO 1989 All rights reserved. No part of this pubication 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-1211 Geneve 20 Switzerland Printed in Switzerland on for Standardizatior No reproduction or networking permited without license from IHS by IHS under license with ISC Not for Resale ISO893:1989(E) Introduction Alkane sulfonates have the general formula R - (SO3R')n where R is a saturated aliphatic radical having a chain length of about 12 to 20 carbon atoms; R' is an alkali metal; n may be 1 or 2. They are obtained by sulfochlorination and sulfoxidation of straight-chain paraffins free from branched-chain compounds. They are alkali metal salts of mono- and disulfonic acids. ili Provided by IHS under license with ISO Copyright Intemational Organization for Standardization No reproduction or netiworking permited withoutlicense from IHS Not for Resale