hTE TT90490 E06T59h 96 6E9E 051 INTERNATIONAL ISO STANDARD 3839 Second edition 1996-10-01 Petroleum products -- Determination of bromine number of distilates and aliphatic olefins - Electrometric method Produits pétroliers - Détermination de I'indice de brome de distillats et d'olefines aliphatiques -- Méthode électrometrique This material is reproduced from Iso documents under International Organization for Standardization (Iso) Copyright License number IHS/IcC/1996. Not for resale. No part of these ISo documents may be reproduced in any form, electronic retrieval system or otherwise, except as allowed in the copyright law of the country of use, or with the prior written consent of Iso (Case postale 56, 1211 Geneva 20, Switzerland, Fax +41227341079), IHSor the Iso Licensor'smembers. ISO Reference number ISO3839:1996(E) Copyright Intemational Organization for Standardization Not for Resale 1503839 964851903 0680612250 ISO 3839:1996(E) Foreword Iso (the International Organization for Standardization) is a worldwide federation of national standards bodies (lsO member bodies). The work of preparing International Standards is normally carried out through IsO 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. ISO/Tc 28, Petroleum products and lubricants. This second edition cancels and replaces the first edition (IS0 3839:1978), which has been technically revised. Annex A of this International Standard is for information only CISO1996 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 fromthe publisher. International Organization for Standardization Case Postale 56 . CH-1211 Geneve 20 · Switzerland Printed in Switzerland ation for Standardizatic Provided by IHS under license with IS( Not for Resale 26T ET90990 E06T5h 96 6E9E 0S1 INTERNATIONAL STANDARD @ISO ISO3839:1996(E) Petroleum products Determination of bromine number of distillates and aliphatic olefins -- Electrometric method WARNiNG --- The use of this International Standard may involve hazardous materials, operations and equipment. This standard does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. 1 Scope This International Standard specifies a method for the determination of the bromine number of the foilowing materials: a) petroleum distillates that are substantially free of material lighter than 2-methylpropane, and that have 90 %(v/M) (i.e. volume fraction 90 %) distllation recovery temperatures under 327 °C. The method is generally applicable to gasolines (including leaded, unleaded and oxygenated fuels), kerosines and distillates in the gas oil range thatfall within thefollowing limits: 90 %(V/M) recovery distillation Bromine number, max. temperature (ISO 3405) (seenote1) Under 205 °℃ 175 205℃to327°℃ 10 b) commercial olefins that are essentially mixtures of aliphatic monoolefins and that fall within the range of 95 to 165 bromine number (see note 1). The method has been found suitable for such materials as commercial propene trimer and tetramer, butene dimer, and mixed nonenes, octenes and heptenes. The method is not suitable for normal alpha-olefins. NOTES 1 These limits are imposed since the precision of the method has been determined only