OSL 895 NTERNATIONAL STANDARD INTERNATIONAL ORGANIZATION FOR STANDARDIZATION ·MEKIYHAPOIHAH OPFAHW3AIM HO CTAHIAPTW3ALIMN.ORGANISATION INTERNATIONALE DE NORMALISATION Surface active agents -- Technical sodium secondary alkyisulphates - Methods of analysis Agents de surface - sec. Alkyisulfates de sodium techniques - Méthode d'analyse First edition - 1977-11-01 NOV 2 2 1977 Ref. No. ISO 895-1977 (E) UDC 661.185 : 543 1SO 895-1977 ( Descriptors : surfactants, sodium secondary alkylsulphate, chemical analysis, determination of content, water, pH, alkalinity, acidity. sodium sulphates, sodium chloride. Price based on 6 pages Copyright International Organization for Standardization d without licensefrom 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 up has the right to be represented on that committee. International organizations, igovernmental 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. StandardiSO 895 was developed by Technical International Committee ISO/TC 91, Surface active agents, and was circulated to the member bodies in October 1975. It has been approved by the member bodies of the following countries : Australia Iran Romania Italy South Africa, Rep. of Austria Spain Belgium Japan Brazil Korea Rep. of Switzerland Canada Mexico Turkey Netherlands France United Kingdom Germany U.S.A. New Zealand Hungary Poland U.S.S.R. India Portugal No member body expressed disapproval of the document. ThisInternational Standard and replaces Recommendation cancels ISO R 895-1968, of which it constitutes a technical revision. @ International Organization for Standardization, 1977 Printed in Switzerland Copyright International Organization for Standardization nse from IHS Not for Resale ISO 895-1977 (E) INTERNATIONAL STANDARD Surface active agents --- Technical sodium secondary alkylsulphates - Methods of analysis 0 INTRODUCTION . Determination of sodium sulphate content. Determination of sodium chloride content. products in the title is intended to distinguish these It also sets out, in an annex, a general scheme of anatysis. products from those which, in accordance with current scientific usage, could be designated as technical sodium primary alkylsulphates. As shown in the general formula given below, the former may be considered as derived 2 FIELD OF APPLICATION from secondary alcohols, whereas the latter are derived from primary aicohols. This International Standard is applicable only to technical It is therefore the former which are the subject of this sodium alkylsulphates in liquid form, free from other international Standard. They are commonly known today products extraneous to their manufacture. It is not as technical sulphates of secondary fatty alcohols. applicable to powders or pastes. In order to simplify the text of this international Standard and avoid unnecessary repetition, the word "secondary" has been omitted from the term"sodium alkylsulphates", 3 REFERENCES but it should be understood that only "sodium secondary Iso 607, Surface active agents - Detergents - Methods of alkylsulphates""are covered. sample division. 1 ) The general formula of the products which are the subject of this International Standard is IsO 894, Surface active agents - Technical sodium primary alkylsulphates - Methods of analysis. R. IsO 4314, Surface active agents -- Determination of free alkalinity or free acidity --. Titrimetric method. where R and R' are aliphatic radicals. IsO 4315, Surface active agents Determination of alkalinity -- Titrimetric method. 1 SCOPE IsO 4316, Surface active agents Determination of the Thi