TET92000E06TS9h W-75-04 International Standard (ISO) 1388/10 INTERNATIONAL ORGANIZATION FOR STANDARDIZATION+MEKAYHAPOAHAA OPTAHM3ALMA NO CTAHAAPTW3ALMW+ORGANISATION INTERNATIONALE DE NORMALISATION Ethanol forindustrial use - Methods of test . Part1o:Estimationofhydrocarbonscontent- Distillation method Ethanola usage industriel-Methodes d'essai-Partie 10:Evaluation des hydrocarbures-Methode par distillation Firstedition--1981-11-01 ISO 1388/10-1981 (E) UDC661.722:543.824 Ref.No.1SO1388/10-1981(E) Descriptors : industrial products, ethanols, tests, determination of content, hydrocarbons, distillation method. Price based on 5 pages CoPYRIGHT 2ooo International Organization For Standardization Information Handling Services, 2oo0 EhT92000E06TSh 1388 PT 10-81 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, also take part in the work. Draft International Standards adopted by the technical committees are circulated to the member bodies for approval before theiracceptance as International Standards by the Iso Council. International Standard ISo1388/10was developed by Technical Committee ISo/TC 47, Chemistry, and was circulated to the member bodies in February 1980. It has been approved by the member bodies of the following countries : France Philippines Australia Germany, F.R. Austria Poland Hungary Belgium Romania Brazil India South Africa, Rep. of Bulgaria Italy Switzerland China Korea,Rep.of Thailand Netherlands USSR Czechoslovakia The member body of the following country expressed disapproval of the document on technical grounds : United Kingdom InternationalStandardsISo1388/1toISO1388/12cancel andreplaceISoRecom- mendation R 1388-1970, of which they constitute a technical revision. @InternationalOrganizationforStandardization,1981 Printed in Switzerland CopYRIGHT 2ooo International Organization For Standardization Information Handling Services, 2oo0 ISO1388/10-1981(E) INTERNATIONALSTANDARD EObTSh ST92000 5 Ethanol for industrial use - Methodsoftest Part 10 : Estimation of hydrocarbons scontent Distillation method Scope and fieldofapplication 4.4 Receiver for the estimation of hydrocarbons content, such as that shown in figure 2. Thispart ISO1388 distillation method for of specifiesa estimating the hydrocarbons content of ethanol for industrial use. 5 Procedure This document should be read in conjunction with ISo 1388/1 5.1 Testportion (see the annex). Take 1 500 ± 1 ml of the laboratory sample. Principle 5.2 Determination 2 Distillation of a test portion in the presence of water, addition Place the test portion (5.1) in the distllation flask (4.1) and add to the distillate of a saturated sodium chloride solution and 1 500 ml of water, Connect the fractionating column (4.2)to the flask and connect the side arm to the Liebig condenser (4.3) measurement of the volume of insoluble hydrocarbons. fitted with its adaptor, Heat the flask so that the rate of distilla- tion doos not exceed 30 drops per minute and collect the distillate in the receiver (4.4). When the distillate reaches the 3 Reagent mark on the constricted part of the receiver (about 13 ml of distllate), stop the distillation. Add sufficient of the sodium During the analysis, use only reagent of recognized analytical chloride solution (3.1) to the receiver so that the liquid level lies grade, and distlled water or water of equivalent purity. between the 1 and 2 ml graduations. Mix the contents of the receiver by rotating it, taking care not 3.1 Sodiumchloride, saturated solution at ambient to turn it upside down. Allow to stand until the liquid has temperature. a