1506251 964851903 0685722 637 INTERNATIONAL ISO STANDARD 6251 Second edition 1996-11-01 Liquefied petroleum gases Corrosiveness to copper -- Copper strip test Gaz de pétrole liquefiés -Action corrosive sur le cuivre- Essai a la lame de cuivre 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 +41 22 734 10 79), IHs or the Iso Licensor's members. s Reference number ISO 6251:1996(E) Cop Not for Resale 573 E06158h 96 529 051 0685723 ISO6251:1996(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 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 6251 was prepared by Technical Committee ISO/TC 28, Petroleum products and lubricants. This second edition cancels and replaces the first edition (IsO 6251:1982), whichhasbeentechnicallyrevised. Annex A forms an integral part of this International Standard. 1SO1996 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 Case Postale 56·CH-1211 Geneve 20 ·Switzerland Printed in Switzerland i Copyright Intemational Organization for Standardizatior Not for Resale 150 6251 96 4851903 0685724 40T INTERNATIONAL STANDARD @ISO ISO 6251:1996(E) Liquefied petroleum gases -- Corrosiveness to copper - Copper strip test WARiNING - 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 International Standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. 1 Scope This International Standard describes a method for the determination of the corrosiveness to copper of liquefied petroleum gases. NOTE:- For an equivalent copper strip test applicable to less volatile petroleum products, see IsO 2160 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the poss:bility of applying the most recent editions of the standards indicated below. Members of IEC and IsO maintain registers of currently valid International Standards. IsO2160:1985,Petroleum products-Corrosiveness to copper-Copperstrip test. ISO 3696:1987, Water for analytical laboratory use Specification and test methods. 3efinition For the purposes of this International Standard, the following definition applies. 3.1 liquefied petroleum gas (LPG): Hydrocarbon gas that can be stored and/or handled in the liquid phase under moderate conditions of pressure and at ambi