(ISO) NTERNATIONAL STANDARD 2122 INTERNATIONAL ORGANIZATION FOR STANDARDIZATION MEKAYHAPOAHA OPFAHW3AM HIO CTAHAAPTW3ALWW·ORGANISATION INTERNATIONALE DE NORMALISATION Sodium and potassium silicates for industrial use Preparation of solution of products not easily soluble in boiling water and determination of matter insoluble in water Firstedition-1972-06-01 ISO 2122-1972 (E) UDC 661.31/32 : 54-165 Ref.No.ISO 2122-1972 (E) Descriptors : chemical tests, dissolving, pota nsilicates.solubility.solutions 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 to the Member Bodies for approval before their acceptance as International Standards by the ISO Council. International Standard ISO2122 was drawn up by Technical Committee ISO/TC 47, Chemistry. It was approved in March1971by the Member Bodies of the following countries: Austria India South Africa, Rep. of Belgium Ireland Spain Chile Israel Switzerland Czechoslovakia Italy Thailand Egypt, Arab Rep. of Netherlands Turkey France New Zealand United Kingdom Germany Poland U.S.A. Hungary Portugal U.S.S.R. No Member Body expressed disapproval of the document. International Organizationfor Standardization,1972 Printed in Switzeriand