SIST EN 15109:2007
(Main)Surface active agents - Determination of the active matter content of alkylamidopropylbetaines
Surface active agents - Determination of the active matter content of alkylamidopropylbetaines
This European Standard specifies a method for the determination of the active matter content of alkylamidobetaines in commercial surface active agents.
Grenzflächenaktive Stoffe - Bestimmung des Aktivgehaltes von Alkylamidopropylbetainen
Diese Europäische Norm legt ein Verfahren zur Bestimmung des Aktivgehaltes von Alkylamidobetainen in
handelsüblichen grenzflächenaktiven Stoffen fest.
Agents de surface - Détermination de la teneur en matieres actives des alkylamidopropylbétaines
La présente Norme européenne spécifie une méthode permettant de déterminer la teneur en matieres actives des alkylamidopropylbétaines dans les agents de surface disponibles dans le commerce.
Površinsko aktivne snovi - Določevanje aktivnih snovi v alkilamidopropil betainih
General Information
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Surface active agents - Determination of the active matter content of alkylamidopropylbetainesAgents de surface - Détermination de la teneur en matieres actives des alkylamidopropylbétainesGrenzflächenaktive Stoffe - Bestimmung des Aktivgehaltes von AlkylamidopropylbetainenTa slovenski standard je istoveten z:EN 15109:2006SIST EN 15109:2007en71.100.40Površinsko aktivna sredstvaSurface active agentsICS:SLOVENSKI
STANDARDSIST EN 15109:200701-april-2007
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 15109November 2006ICS 71.100.40 English VersionSurface active agents - Determination of the active mattercontent of alkylamidopropylbetainesAgents de surface - Détermination de la teneur en matièresactives des alkylamidopropylbétaïnesGrenzflächenaktive Stoffe - Bestimmung des Aktivgehaltesvon AlkylamidopropylbetainenThis European Standard was approved by CEN on 6 October 2006.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 Central Secretariat 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 Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2006 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 15109:2006: E
EN 15109:2006 (E) 2 Contents Page Foreword.3 1 Scope.4 2 Normative references.4 3 Principle.4 4 Reagents.4 5 Apparatus.5 6 Sampling and preparation of the test sample.6 7 Procedure.6 8 Calculation and expression of results.7 9 Precision.8 9.1 Repeatability limit.8 9.2 Reproducibility limit.8 10 Test report.8 Annex A (informative)
Titration parameters.9 Annex B (informative)
Statistical and other data derived from the results of inter-laboratory tests.10 Annex C (informative)
EN 13270 and EN 15109 active matter comparative analysis.11 C.1 General.11 C.2 Analysis of alkylamidopropylbetaines.11 C.3 Analysis of alkyldimethylbetaines.12 Bibliography.13
EN 15109:2006 (E) 3 Foreword This document (EN 15109:2006) has been prepared by Technical Committee CEN/TC 276 “Surface active agents”, the secretariat 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 or by endorsement, at the latest by May 2007, and conflicting national standards shall be withdrawn at the latest by May 2007. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EN 15109:2006 (E) 4 1 Scope This European Standard specifies a method for the determination of the active matter content of alkylamidobetaines in commercial surface active agents. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. 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 Principle The test sample to be analysed is alkalinized by addition of sodium hydroxide. In this way all substances present are converted into a defined form, namely: the betaine into its intermolecular salt form; the amidoamine into the free amidoamine; the acids (e.g. hydrochloric acid, fatty acids, chloroacetic acids and glycolic acid) into their sodium salt forms. During the titration with perchloric acid in the non-aqueous medium: the betaine is changed into the protonated form; the amidoamine is changed into the amidoamine perchlorate; the excess sodium hydroxide and sodium salts of the different acids are transformed into weakly dissociated sodium perchlorate. By using a solvent mixture which enables a good differentiation of varying pK(b) values, it is possible to differenciate the betaine from these accompanying substances. Salts of chloroacetic acids, glycolic acid, fatty acid and amidoamine do not interfere. Short chain betaines are titrated together with long chain betaines. 4 Reagents 4.1 General WARNING — Your attention is drawn to the regulations covering the handling of hazardous substances. Technical, organisational and personal protection measures should be observed. During the analysis, unless otherwise specified, use only reagents of recognized analytical grade and have been checked in advance as to not interfere with the analytical results and water complying with grade 1 as defined in EN ISO 3696. 4.2 1,4-dioxane, minimum purity 99 % (CAS number: 123-91-1).
EN 15109:2006 (E) 5 WARNING — This substance can cause irreversible effects and eye irritation. 4.3 Methoxyethanol, minimum purity 99 % (CAS number : 32718-54-0). WARNING — This substance is considered as mutagenic. 4.4 Methanol, minimum purity 99,5 % (CAS number : 67-56-1). WARNING — This substance is considered toxic by ingestion or inhalation. 4.5 Sodium hydroxide, c(NaOH) = 1,0 mol/l (CAS number : 1310-73-2). 4.6 Sodium acetate, minimum purity 99 % (CAS number : 127-09-3). 4.7 Sodium hydroxide/sodium acetate solution Dissolve 80 g of sodium acetate in aqueous sodium hydroxide (c(NaOH) = 1,0 mol/l) into a 1 l volumetric flask. Make up to the volume with the same sodium hydroxide solution. Stopper and mix. 4.8 Potassium hydrogen phthalate, purity (100 ± 0,1) %, (CAS number : 877-24-7). 4.9 Acetic acid, minimum purity 99,8 % (CAS number : 64-19-7). 4.10 Perchloric acid standard volumetric solution, c(HClO4) = 0,1 mol/l (CAS number: 7601-90-3), in
1,4-dioxane. Fill approximately 500 ml of dioxane in a 1 000 ml volumetric flask. Add the capacity of an ampoule for the preparation of 0,1 mol/l perchloric acid standard volumetric solution. Make up to the volume with 1,4-dioxane. For the determination of the concentration of the perchloric acid standard volumetric solution, weigh about 0,18 g of dried potassium hydrogen phthalate to the nearest 0,1 mg into the titration beaker and dissolve in about 100 ml of acetic acid. Switch the stirrer on, immerse the electrodes and titrate with the perchloric acid standard volumetric solution beyond the potential jump. Calculate the concentration, fc, of the perchloric acid standard volumetric solution, in moles per litre, using the Equation (1): V
Mm = fc××10000 (1) where m0 is the mass of potassium hydrogen phthalate, in grams; M is the molar mass of potassium hydrogen phthalate (M = 204,23 g/mol); V is the volume, in millilitres, of perchloric acid standard volumetric solution consumed to the inflection point. 5 Apparatus Ordinary apparatus and the following. 5.1 Automatic potentiometric
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