1388/1 ISo International Standard INTE RNATIONAL ORGANIZATION FOR STANDARDIZATION MEXAYHAPOAHAA OPrAHM3AUMA nO CTAHAAPTM3ALWM-ORGANISATION INTE RNATIONALE DE NORMALISATION Ethanol for industrial use -- Methods of test - Part 1 : General Ethanol a usage industriel -- Methodes d'essai -- Partie 1 : Generalites First edition -- 1981-11-01 NOV131981 1308/ 1- (981 (E) UDC 661.722 : 543.8 Ref. No. ISO 1388/1-1881 (E) Descriptors : industrial products, ethanols, tests, generalities. SU Price based on 2 pages Copyright International Organization for Standardization tted without license from IHS Not for Resale Foreword Iso (the international Organization for Standardization) is a worldwide federation of national standards institutes (IsO member bodies). The work of developing Inter national Standards is carried out through IsO technical committees. Every member body interested in a subject for which a technical committee has been set up has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with isO, aiso take part in the work. 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. International Standard ISO 1388/1 was developed by Technical Committee ISO/TC 47, Chemistry, and was circulated to the member bodies in February 1980. Australia Germany, F.R. Romania Hungary Austria South Africa, Rep. of Belgium India Switzerland Brazil Italy Thailand United Kingdom Bulgaria Korea, Rep. of China Netherlands USSR Philippines Czechoslovakia France Potand No member body expressed disapproval of the document. This International Standard has also been approved by the International Union of Pure and Applied Chemistry (IUPAC). International Standards ISO 1388/1 to ISO 1388/12 cancel and replace ISO Recom- International Organization for Standardization, 1981 Printed in Switzerland Copyright International Organization for Standardization INTERNATIONAL STANDARD ISO 1388/1-1981 (E) Ethanol for industrial use - Methods of test -- Part 1 : General Scope and field of application Determination of density at 20 oC Use the method specified in Iso 758. This part of Iso 1388 gives general instructions relating to methods of test for ethanol for industrial use. Determination of dry residue after It also specifies the methods to be used for the determination of evaporation on a water bath density at 20 oC, for the determination of dry residue after evaporation on a water bath, for the determination of water Use the method specified in iSo 759. content, and for the measurement of colour. NOTE - - If the residue obtained is less than 0,001 % (m/ m), repeat the A list of the parts comprising ISO 1388 is given in the annex determination using a test portion of 250 ml, introduced in small po tions into the evaporating basin, and take this into account in the calculation of results. References Determination of water content Iso 758, Liquid chemical products for industrial use -- Deter- mination of density at 20 oC. Use one of the methods specified in Iso 760. Measurement of colour mination of dry residue after evaporation on a water bath -- General method. Use the method specified in ISO 2211. Iso 760, Determination of water -- Karl Fischer method (General method). Test report 8 Iso 2211, Liquid chemical products Measurement of The test report, for each determination, shall contain the colour in Hazen units (platinum-cobalt scale). following information : a) an identification of the sample; 3 Sampling1) b) the reference of the method used; Store the laboratory sample in a clean, dry and airtight, ground glass stoppered bottle or a screw-capped bottle fitted with a c) the results, and the method of expression used; polyethylene cone insert of such capacity that it is almost en- tirely filied by the sample. if it is necessary to seal the bottle, d) any unusual feat