SIST EN 13435:2002

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Grenzflächenaktive Stoffe - Bestimmung des freien Amingehaltes von AlkyldimethylbetainenAgents de surface - Détermination de la teneur en amines libres dans les alkyl diméthylbétainesSurface active agents - Determination of free amine content of alkyl dimethyl betaines71.100.40Površinsko aktivna sredstvaSurface active agentsICS:Ta slovenski standard je istoveten z:EN 13435:2001SIST EN 13435:2002en01-junij-2002SIST EN 13435:2002SLOVENSKI
STANDARD



SIST EN 13435:2002



EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 13435December 2001ICS 71.100.40English versionSurface active agents - Determination of free amine content ofalkyl dimethyl betainesAgents de surface - Détermination de la teneur en amineslibres dans les alkyl diméthylbétaïnesGrenzflächenaktive Stoffe - Bestimmung des freienAmingehaltes von AlkyldimethylbetainenThis European Standard was approved by CEN on 11 November 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 13435:2001 ESIST EN 13435:2002



EN 13435:2001 (E)2ContentspageForeword.31Scope.42Normative references.43Terms and definitions.44Principle.45Reagents.46Apparatus.57Sampling and sample.58Procedure.59Expression of results.510Precision.611Test report.6Annex A (informative)
Ring test results.7Annex B (informative)
Instrument settings.8Annex C (informative)
Example for a typical titration curve and its derivative.9Bibliography.10SIST EN 13435:2002



EN 13435:2001 (E)3ForewordThis European Standard has been prepared by Technical Committee CEN/TC 276 "Agents de surface", 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 June 2002, and conflicting national standards shall be withdrawn at the latest byJune 2002.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.Annexes A, B and C are informative.SIST EN 13435:2002



EN 13435:2001 (E)41 ScopeThis European Standard specifies a method for the determination of 0,02 mmol to 1 mmol of free amine in alkyldimethyl betaines. Monochloroacetic acid, glycolic acid and strong acids do not interfere the determination.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.3.1free aminecontent of amine in alkyl dimethyl betaines which can be determined by this method, expressed in grams per 100 g4 PrincipleThe sample of alkyl dimethyl betaine is dissolved in aqueous propan-2-ol. All the components are converted intotheir basic form by addition of sodium hydroxide solution. Carbon dioxide is removed by stripping out with nitrogen.The free amine is determined by titration with hydrochloric acid using potentio
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