EN 13270:2001

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.LOEHWDLQLKGrenzflächenaktive Stoffe - Bestimmung des Aktivgehalts in AlkyldimethylbetainenAgents de surface - Dosage de la teneur en matiere active dans les alkyldiméthylbétainesSurface active agents - Determination of the active matter content in alkyldimethylbetaines71.100.40Površinsko aktivna sredstvaSurface active agentsICS:Ta slovenski standard je istoveten z:EN 13270:2001SIST EN 13270:2002en01-januar-2002SIST EN 13270:2002SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 13270March 2001ICS 71.100.40English versionSurface active agents - Determination of the active mattercontent in alkyldimethylbetainesAgents de surface - Dosage de la teneur en matière activedans les alkyldiméthylbétaïnesGrenzflächenaktive Stoffe - Bestimmung des Aktivgehaltsin AlkyldimethylbetainenThis European Standard was approved by CEN on 4 February 2001.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2001 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 13270:2001 ESIST EN 13270:2002

Page 2EN 13270:2001ContentsForeword.31Scope.42Normative references.43Term and definition.44Principle.45Reagents.46Apparatus.57Sampling and preparation of the test sample.58Procedure.59Calculation and expression of results.510Precision.611Test report.6Annex A (informative)
Ring test results.7Annex B (informative)
Example for potentiometric titration parameters.8Annex C (informative)
Typical titration curve of an alkyl dimethyl betaine and its first derivative.9Bibliography.10SIST EN 13270:2002

Page 3EN 13270:2001ForewordThis European Standard has been prepared by Technical Committee CEN/TC 276 "Surface active agents", thesecretariat of which is held by AFNOR.This European Standard shall be given the status of a national standard, either by publication of an identical text orby endorsement, at the latest by September 2001, and conflicting national standards shall be withdrawn at thelatest by September 2001.Annexes A, B, and C are informative.According to the CEN/CENELEC Internal Regulations, the national standards organizations of the followingcountries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland,France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden,Switzerland and the United Kingdom.SIST EN 13270:2002

Page 4EN 13270:20011 ScopeThis European Standard specifies a test method for the determination of up to 1 mmol of alkyl dimethyl betaine.Monochloroacetic acid, glycolic acid, strong acids and amines do not interfere.2 Normative referencesThis European Standard incorporates by dated or undated reference, provisions from other publications. Thesenormative references are cited at the appropriate places in the text and the publications are listed hereafter. Fordated references, subsequent amendments to or revisions of any of these publications apply to this EuropeanStandard only when incorporated in it by amendment or revision. For undated references the latest edition of thepublication referred to applies (including amendments).EN ISO 3696, Water for analytical laboratory use - Specification and test methods (ISO 3696:1987).ISO 607, Surface active agents and detergents
Methods of sample division.3 Term and definitionFor the purposes of this European Standard, the following term and definition apply :3.1active matter contentcontent of alkyl dimethyl betaine which can be determined by this test method, expressed in grams per 100 g.4 PrincipleAlkyl dimethyl betaines are determined by alkalimetric titration with potentiometric indication of the end point.The sample is dissolved in isobutyl methyl ketone. Acidification with propanolic hydrochloric acid converts all thebasic compone
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