Surface active agents - Determination of primary, secondary and tertiary amino nitrogen - Potentiometric titration

This European Standard specifies the methods for the determination of primary, secondary and tertiary amino nitrogen content in surface active agents by potentiometric titration.

Grenzflächenaktive Stoffe - Bestimmung des Gehalts an Primär-, Sekundär- und Tertiär-Aminstickstoff - Potentiometrische Titration

Diese Europäische Norm legt ein Prüfverfahren zur Bestimmung des Gehalts an Primär-, Sekundär- und Tertiär-Aminstickstoff in grenzflächenaktiven Stoffen durch potentiometrische Titration fest.

Agents de surface - Détermination de la teneur en azote sous forme amine primaire, secondaire et tertiaire - Titrage potentiométrique

La présente Norme européenne spécifie une méthode de détermination par titrage potentiométrique de la teneur en azote sous forme amine primaire, secondaire et tertiaire dans les agents de surface.

Površinsko aktivne snovi - Določevanje primarnega, sekundarnega in terciarnega amino dušika - Potenciometrijska titracija

General Information

Status
Published
Publication Date
31-Jan-2003
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-Feb-2003
Due Date
01-Feb-2003
Completion Date
01-Feb-2003
Ref Project
EN 13717:2002 - Surface active agents - Determination of primary, secondary and tertiary amino nitrogen - Potentiometric titration

Overview

EN 13717:2002 is a CEN (European) standard that defines potentiometric titration methods for the determination of primary, secondary and tertiary amino nitrogen in surface active agents (surfactants). The standard specifies scope, principle, reagents, apparatus, sample preparation, stepwise procedures and reporting requirements to ensure reproducible, comparable analytical results across laboratories.

Key topics and technical requirements

  • Scope: Methods for quantifying primary + secondary, secondary + tertiary, and tertiary amino-nitrogen fractions in surfactants by potentiometric titration.
  • Analytical principle:
    • Primary + secondary: reaction with carbon disulfide, then titration with NaOH.
    • Secondary + tertiary: primary protected by salicylaldehyde, then titration with HCl.
    • Tertiary: acetylation (acetic anhydride) followed by titration with trifluoromethane sulfonic acid (or alternative phenylisothiocyanate route with HCl titration).
  • Reagents & safety: Uses analytical-grade solvents and reagents (2‑propanol, carbon disulfide, salicylaldehyde, acetic anhydride, trifluoromethane sulfonic acid, etc.). The standard highlights safety (e.g., carbon disulfide is highly flammable and toxic) and the need for fume‑hood work.
  • Apparatus: Standard lab glassware plus potentiometric titrator with combined pH electrode, burette, stirrer and oven. Annex A gives example instrument settings.
  • Sample handling: Sample division and storage should follow ISO 607; sample amounts are chosen to give ~0.5–1 mmol total base nitrogen for titration.
  • Results & calculations: Nitrogen contents are calculated from titrant volume, concentration and sample mass; results reported to two decimal places.
  • Precision and validation: Annex C presents interlaboratory test data and typical repeatability/reproducibility performance to guide method validation and QA.

Practical applications

  • Routine quality control of surfactants, amine-based intermediates and detergent raw materials.
  • Product specification testing to monitor amine content that affects performance, toxicity, or downstream reactions.
  • R&D and formulation development where accurate amine quantification informs chemical modification or neutralization steps.
  • Regulatory and compliance testing where standardized, traceable analytical methods are required.

Who uses this standard

  • Analytical chemists in industrial and contract test laboratories
  • Surfactant and detergent manufacturers
  • Formulation scientists and quality assurance departments
  • Regulatory bodies and certification laboratories requiring harmonized test methods

Related standards

  • EN 13716 - Determination of total base nitrogen (potentiometric titration) - referenced as an alternative route for some determinations.
  • ISO 607 - Sample division and preparation for surface active agents.

Keywords: EN 13717:2002, surface active agents, amino nitrogen determination, potentiometric titration, primary secondary tertiary amino nitrogen, surfactant quality control, CEN standard.

Frequently Asked Questions

SIST EN 13717:2003 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Surface active agents - Determination of primary, secondary and tertiary amino nitrogen - Potentiometric titration". This standard covers: This European Standard specifies the methods for the determination of primary, secondary and tertiary amino nitrogen content in surface active agents by potentiometric titration.

This European Standard specifies the methods for the determination of primary, secondary and tertiary amino nitrogen content in surface active agents by potentiometric titration.

SIST EN 13717:2003 is classified under the following ICS (International Classification for Standards) categories: 71.100.40 - Surface active agents. The ICS classification helps identify the subject area and facilitates finding related standards.

You can purchase SIST EN 13717:2003 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of SIST standards.

Standards Content (Sample)


2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Grenzflächenaktive Stoffe - Bestimmung des Gehalts an Primär-, Sekundär- und Tertiär-Aminstickstoff - Potentiometrische TitrationAgents de surface - Détermination de la teneur en azote sous forme amine primaire, secondaire et tertiaire - Titrage potentiométriqueSurface active agents - Determination of primary, secondary and tertiary amino nitrogen - Potentiometric titration71.100.40Površinsko aktivna sredstvaSurface active agentsICS:Ta slovenski standard je istoveten z:EN 13717:2002SIST EN 13717:2003en01-februar-2003SIST EN 13717:2003SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 13717December 2002ICS 71.100.40English versionSurface active agents - Determination of primary, secondary andtertiary amino nitrogen - Potentiometric titrationAgents de surface - Détermination de la teneur en azotesous forme amine primaire, secondaire et tertiaire - TitragepotentiométriqueGrenzflächenaktive Stoffe - Bestimmung des Gehalts anPrimär-, Sekundär- und Tertiär-Aminstickstoff -Potentiometrische TitrationThis European Standard was approved by CEN on 23 October 2002.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, Malta, 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© 2002 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 13717:2002 ESIST EN 13717:2003

Instrument settings.9Annex B (informative)
Typical titration curves.10Annex C (informative)
Results of interlaboratory test.11Bibliography.13SIST EN 13717:2003
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