1388/6 International Standard (ISO INTE RNATIONAL ORGANIZATION FOR STANDARDIZATION MEXAYHAPOAHAA OPrAHM3ALMA HO CTAHAAPTM3AUWWORGANISATION INTE RNATIONALE DE NORMALISATION Ethanol for industrial use -- Methods of test Part 6 : Test for miscibility with water Ethanolausage industriel--Methodes d'essai--Partie6:Essaidemiscibilitea I'eau First edition -- 1981-11-01 SO 1388/6-1981 (E) UDC 661.722 : 543.862.1 Ref.No.ISO1388/6-1981 (E) Descriptors : industrial products, ethanols, tests, mixtures, water. Price based on 2 pages onal Organization for Standardizatior Not for Resale Foreword Iso (the International Organization for Standardization) is a worldwide federation of national standards institutes (iSOmember 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 and non-governmental, in liaison with Iso, also 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 1388/6 was developed by Technical Committee ISO/TC 47, Chemistry, and was circulated to the member bodies in February 1980. Australia Germany, F.R. Romania Austria Hungary South Africa, Rep. of Belgium India Switzerland Brazil Italy Thailand Bulgaria Korea, Rep.of UnitedKingdom China Netherlands USSR Czechoslovakia Philippines France Poland No member body expressed disapproval of the document. International Standards ISO 1388/1 to ISO 1388/12 cancel and replace ISo Recom- mendation R 1388-1970, of which they constitute a technical revision. ? International Organization for Standardization, 1981 Printed in Switzerland yright Intemational Organization for Standardization Provided by IHS under license with ISC Noreproductionor networking permited withoutlicensefromIHS Not for Resale INTERNATIONALSTANDARD ISO1388/6-1981 (E) Ethanol for industrial use -- Methods of test Part 6 : Test for miscibility with water 1 Scope and field of application 5 Procedure 5.1 of ethanol for industrial use. Test portion Take 5 ml of the laboratory sample or a different volume agreed This document should be read in conjunction with ISo 1388/1 between the interested parties. (see the annex). 5.2 Test 2 Principle Place the test portion (5.1) in one of the Nessler cylinders (4.1) Addition of water to a test portion, under specified conditions, and dilute with water to the 100 ml mark. Mix and adjust the andexaminationforopalescence. temperature to about 20 °C. Place 100 ml of water in the other Nessler cylinder. 3 Reagent Examine the cylinder containing the test solution vertically for opalescence, against a black background with side illumina- During thetest,use only distilledwater or water of equivalent tion, using the second Nessler cylinder containing water as the purity. standard. 4 Apparatus Expression of results Ordinary laboratory apparatus, and Report the dilution-ratio of the test portion and the presence or 4.1 TwomatchedNesslercylinders,of capacity100ml. absence ofopalescence. r Standardization No reproduction or networking permited without license from IHS Not for Resale