1064 NTERNATIONAL STANDARD (Tso INTERNATIONAL ORGANIZATION FOR STANDARDIZATION·MEKIYHAPOIHA OPTAHM3AIWH O CTAHIAPT3ALIMW.ORGANISATION INTERNATIONALE DE NORMALISATION Surface active agents -- Determination of apparent density of pastes on filling Agents de surface -- Determination de la masse volumique apparente des pates au remplissage First edition -- 1974-06-15 ANsl Internat Doc Sect UN6 - 1974 UDC 661.185-404.9 : 531.74 Ref. No. ISO 1064-1974 (E) Descriptors : surfactants, pastes, density measurement, bulk density. Price based on 3 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 International 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 Standards by the ISO Council. Prior to 1972, the results of the work of the Technical Committees were published as Iso Recommendations; these documents are now in the process of being transformed into International Standards. As part of this process, Technical Committee 1SO/TC 91 has reviewed ISO Recommendation R 1064 and found it IS0RecommendationR 1064-1969. IsO Recommendation R 1064 was approved by the Member Bodies of the following countries : Hungary Portugal Austria Belgium India Romania South Africa, Rep. of Canada iran Chile Israel Spain Czechoslovakia Japan Sweden Egypt, Arab Rep. of Korea, Rep. of Switzerland France Netherlands Turkey Germany United Kingdom New Zealand Greece Poland Yugoslavia No Member Body expressed disapproval of the Recommendation. No Member Body disapproved the transformation of ISO/R 1064 into an International Standard. @ International Organization for Standardization, 1974 Printed in Switzerland Copyright International Organization for Standardization Not for Resa ISO 1064-1974 (E) INTERNATIONAL STANDARD Surface active agents - Determination of apparent density of pastes on filling INTRODUCTION 3.2 Stainless steel piston with the following dimensions : The volumes of liquid, powdered or granulated substances outside diameter : 25,9 mm are defined by the apparent density and the apparent 770 g approximately mass : volume. pasty gelatinous substances, the For or corresponding values cannot be obtained by means of a and able to move freely inside the tube (3.1). The base is be swelling, procedure, as there may simple physical closed and the upper part is provided with a stop which formation of coacervate, etc. prevents the piston from coming out of the lower end of the tube. A scale-pan is fitted at the top of the piston to take additional weights, in order to keep the speed of filling 1 SCOPE AND FIELD OF APPLICATION within the prescribed limits. This International Standard specifics a simple method of determining, in the laboratory, the apparent density, on 3.3 Cylindrical vessel made of a rigid material which is not filling, of surface active agents in the form of pastes. attacked by the products being tested, with the following ointments and similar products. dimensions : 2 PRINCIPLE inside diameter : 30,4 mm height : Introduction,under pressure, of the quantity of a sample 70 mm approximately required to fill a container of known volume under the 50 ml at 20 °c capacity : conditions of test. Determination, by weighing, of the mass required to fill the vessel. This vessel closes the lower part of the tube (3.1). The cylindrical vessel has a flat bottom and its upper edge is 3 APPARATUS polished; the inside diameter is slightly greater than the The figure gives an example of the assemb