BS ISO BRITISH STANDARD 21870:2005 Rubber compounding ingredients Carbon black Determination of high-temperature loss on heating by thermogravimetry Confirmed August 2008 ICS 83.040.20 BSi British Standards BS ISO 21870:2005 National foreword This British Standard reproduces verbatim IS0 21870:2005 and implements it as the UK national standard. The UK participation in its preparation was entrusted to Technical Committee PRI/50, Rubber - raw, natural and synthetic, including latex and carbon black, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international publications referred to in this document may be found in the BSI Catalogue under the section entitled "International Standards Correspondence Index", or by using the “Search" facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not ofitself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the ISO title page, pages ii and iii, a blank page, pages 1 to 4, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the documentwaslastissued. Amendments issued since publication This British Standard was published under the authority Amd. No. Date Comments of the Standards Policy and Strategy Committee on 1February2005 @ BSI 1 February 2005 ISBN 0 580 45395 2 BS ISO 21870:2005 INTERNATIONAL ISO STANDARD 21870 First edition 2005-01-15 Rubber compounding ingredients Carbon black Determination of high-temperature loss on heating by thermogravimetry IngredientsdemelangeducaoutchoucNoirdecarbone Determination de la perte a la chaleur a haute température par thermogravimétrie Reference number ISO 21870:2005(E) BS ISO 21870:2005 = BS IS0 21870:2005 Foreword IsO (the International Organization for Standardization) is a worldwide federation of national standards bodies non-governmental, in liaison with isO, also take part in the work. sO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the IsO/lE Directives, Part 2 The main task of technical committees is to prepare International Standards. 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. rights. IsO shall not be held responsible for identifying any or all such patent rights. ISO 21870 was prepared by Technical Committee ISO/TC 45, Rubber and rubber products, Subcommittee SC 3, Raw materials (including latex) for use in the rubber industry. ii blank BS ISO 21870:2005 Rubber compounding ingredients Carbon black Determination of high-temperature loss on heating by thermogravimetry WARNING - Persons using this International Standard should be familiar with normal laboratory practice. This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user to establish appropriate safety and health practices and to ensure compliance with any national regulatory conditions. 1 Scope This International Standard describes a method for quantitative determination of the loss on heating (pyrolysis) of carbon black due to the