SIST EN 15109:2007

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 matières actives des alkylamidopropylbétaïnes dans les agents de surface disponibles dans le commerce.

Površinsko aktivne snovi - Določevanje aktivnih snovi v alkilamidopropil betainih

General Information

• Status: Published
• Publication Date: 31-Mar-2007
• Withdrawal Date: 31-Mar-2007
• ICS: 71.100.40 - Surface active agents
• Technical Committee: KDS - Cosmetics, chemical disinfectants and surface active agents
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Apr-2007
• Due Date: 01-Apr-2007
• Completion Date: 01-Apr-2007
• Ref Project: EN 15109:2006 - Surface active agents - Determination of the active matter content of alkylamidopropylbetaines

Overview

EN 15109:2006 - Surface active agents: Determination of the active matter content of alkylamidopropylbetaines - is a European Standard published by CEN for analytical laboratories and industry. The standard specifies a potentiometric titration method in a non‑aqueous medium to quantify the active matter content (betaines) in commercial surface‑active agent products. It describes scope, principle, reagents, apparatus, sampling, procedure, calculation, precision and reporting requirements.

Key Topics

• Scope and purpose: a validated method to determine the amount of alkylamidopropylbetaine expressed as grams per 100 g in commercial surfactants.
• Analytical principle: alkalinize the sample to convert species to defined forms, then perform a perchloric acid titration in a non‑aqueous solvent system with potentiometric end‑point detection. The method differentiates betaine protonation from other accompanying substances by using solvent/pK(b) separation.
• Required reagents & solvents: 1,4‑dioxane, methoxyethanol, methanol, perchloric acid solution in dioxane, sodium hydroxide/acetate, potassium hydrogen phthalate (for calibration) - with safety warnings (toxic/mutagenic/corrosive) and use in a fume hood.
• Apparatus: automatic potentiometric titrator with drift‑controlled data acquisition, pH glass electrode and Ag/AgCl reference electrode; typical instrument settings are indicated in an informative annex.
• Procedure summary: sample dissolution, alkalinization, solvent addition, potentiometric titration to the third inflection point. Calculation uses volumes at the 2nd and 3rd inflection points and the exact concentration of the perchloric acid titrant.
• Precision & performance: includes repeatability (r) and reproducibility (R) data from inter‑laboratory studies; typical repeatability and reproducibility limits are provided.
• Reporting: required sample identification, reference to EN 15109, result expression (to one decimal place), and any deviations or incidents.

Applications

• Quality control and batch release testing for surfactant manufacturers, especially producers of alkylamidopropylbetaines.
• Raw material verification for detergent formulators, personal care product manufacturers and chemical distributors.
• Contract and independent analytical laboratories performing regulatory/commercial testing of surface active agents.
• Research and development where accurate active matter content is required for formulation equivalence or comparative studies.

Related Standards

• EN 13270 - alternative method for active matter determination; EN 15109 includes comparative analysis showing statistical equivalence for certain samples.
• EN ISO 3696 - water for analytical laboratory use (referenced).
• ISO 607 - methods for sample division (referenced).

This standard is essential for labs requiring a validated, reproducible titration-based method to quantify alkylamidopropylbetaine active matter in commercial surfactants while ensuring safety and traceable results.

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

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

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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