ISO INTERNATIONAL STANDARD 3451-2 Second edition 1998-12-15 Plastics Determination of ash - Part 2: Poly(alkylene terephthalate) materials Plastiques Détermination du taux de cendres Partie 2: Matieres poly(terephtalate d'alkylene) Tso Referencenumber ISO 3451-2:1998(E) py IHS under lic itted without license from IHS Not for Resale ISO 3451-2:1998(E) Contents 1Scope 2 Normative reference, 3 Principle. 3.1 Unfilled materials. 3.2 Filled and glass-fibre reinforced materials . 3.3 Flame-retardant materials reinforced with glass fibre.. 4 Reagents (method C or method A in the presence of DBB) 5 Apparatus. 6 Procedure. 2 6.1 Test portion 2 6.2 Unfilled materials . 6.3 Filled and glass-fibre reinforced materials .. 6.4 Materials reinforced with glass fibre containing flame-retardant antimony trioxide and/or other volatilizableadditives... 7 Expression of results 4 8 Precision 9 Test report @ISO1998 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic International OrganizationforStandardization Casepostale56·CH-1211Geneve20·Switzerland Internet [email protected] Printed in Switzerland Not for Resale @ ISO ISO3451-2:1998(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.Eachmemberbodyinterestedina subjectforwhichatechnical committeehasbeenestablishedhas 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 3451-2 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 5. Physical-chemicalproperties. This second edition cancels and replaces the first edition (IsO 3451-2:1984), which has been technically revised. ISO 3451 consists of the following parts, under the general title Plastics Determination of ash: Part 1: General methods Part 2: Poly(alkylene terephthalate) materials Part3:Unplasticizedcelluloseacetate Part 4: Polyamides Part 5: Poly(vinyl chloride) ili