EN 13466-2:2001

Fertilizers - Determination of water content (Karl Fischer methods) - Part 2: 2-propanol as extracting medium

This European standard specifies a Karl Fischer titrimetric method for the determination of the water content of fertilizers based on the use of 2-propanol as extracting medium.
The method is applicable to all solid mineral fertilizers. The result (KFP water) includes "free" water and extracted water of crystallization from the following components of fertilizers: calcium nitrate tetrahydrate (Ca(NO3)2·4H2O); magnesium sulfate heptahydrate (MgSO4·7H2O); potassium chloride magnesium chloride hexahydrate (Carnallite, KCl·MgCl2·6H2O); magnesium nitrate hexahydrate (Mg(NO3)2·6H2O).

Düngemittel - Bestimmung des Wassergehaltes (Karl-Fischer-Verfahren) - Teil 2: 2-Propanol als Extraktionsmittel

Diese Europäische Norm legt ein titrimetrisches Karl-Fischer-Verfahren für die maßanalytische Bestimmung des Wasser-ge-haltes von Düngemitteln fest, das auf der Verwendung von 2-Propanol als Extraktionsmittel basiert.
Das Verfahren gilt für alle festen mineralischen Düngemittel. Das Ergebnis (KFP-Wasser) umfasst ¿freies" Wasser sowie extrahiertes Kristallwasser der folgenden Düngemittelbestandteile: Calciumnitrattetrahydrat (Ca(NO3)2 · 4H2O); Magnesiumsulfatheptahydrat (MgSO4 · 7H2O); Kaliumchlorid-Magnesiumchloridhexahydrat (Carnallit, KCl · MgCl2 · 6H2O); Magnesiumnitrathexahy-drat (Mg(NO3)2 · 6H2O).

Engrais - Détermination de la teneur en eau (Méthodes Karl Fischer) - Partie 2: 2-propanol comme milieu d'extraction

La présente Norme européenne spécifie une méthode Karl Fischer de titrage de la teneur en eau des engrais, reposant sur l'utilisation de 2-propanol comme milieu d'extraction.
La méthode est applicable à tous les engrais solides. Le résultat (eau KFP) englobe l'eau "libre" et l'eau de cristallisation des éléments suivants des matières fertilisantes : nitrate de calcium tétrahydraté (Ca(NO3)2.4H2O), sulfate de magnésium heptahydraté (MgSO4.7H2O), chlorure de potassium et de magnésium hexahydraté (Carnallite, KCl.MgCl2.6H2O), nitrate de magnésium hexahydraté (Mg(NO3)2.6H2O).

Gnojila - Določevanje količine vode (Karl Fischerjeve metode) - 2. del: Ekstrakcija z 2-propanolom

General Information

• Status: Published
• Publication Date: 09-Oct-2001
• Withdrawal Date: 29-Apr-2002
• ICS: 65.080 - Fertilizers
• Technical Committee: CEN/TC 260 - Fertilizers and liming materials
• Drafting Committee: CEN/TC 260/WG 2 - Physical properties of fertilizers
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Start Date: 08-Jul-2022
• Completion Date: 11-Feb-2026
• Ref Project: SIST EN 13466-2:2002 - Fertilizers - Determination of water content (Karl Fischer methods) - Part 2: 2-propanol as extracting medium

Relations

• Refers: EN 1482-1:2024 - Fertilizers, liming materials and inhibitors - Sampling and sample preparation - Part 1: General sampling provisions
• Effective Date: 28-Jan-2026
• Refers: EN 1482-2:2024 - Fertilizers, liming materials and inhibitors - Sampling and sample preparation - Part 2: General sample preparation provisions
• Effective Date: 28-Jan-2026
• Referred By: EN 14787:2005 - Fertilizers and liming materials - Determination of water content - Guidelines and recommendations
• Effective Date: 28-Jan-2026

Overview

EN 13466-2:2001, published by CEN, establishes a standardized Karl Fischer titrimetric method for determining water content in solid mineral fertilizers using 2-propanol as the extracting medium. The method quantifies both "free" water and certain water of crystallization, providing reliable data vital for fertilizer quality, storage, and handling.

Water content directly impacts the performance, shelf life, and safety of fertilizers. This standard caters to a broad spectrum of solid mineral fertilizers, ensuring consistency and comparability of results across laboratories in Europe and beyond.

Key Topics

• Karl Fischer Titrimetric Method: Describes the extraction of water from fertilizer samples using 2-propanol, followed by titration with Karl Fischer reagent.
• Scope of Applicability: Suitable for all solid mineral fertilizers, particularly those containing:
  • Calcium nitrate tetrahydrate (Ca(NO₃)₂·4H₂O)
  • Magnesium sulfate heptahydrate (MgSO₄·7H₂O)
  • Potassium chloride magnesium chloride hexahydrate (Carnallite, KCl·MgCl₂·6H₂O)
  • Magnesium nitrate hexahydrate (Mg(NO₃)₂·6H₂O)
• Types of Water Determined: Measures 'free' water and the water extractable from specific hydrated salts, aiding the control of product consistency.
• Instrumentation and Materials: Involves specialized equipment, such as high-precision balances, centrifuges, turbine-type dispersers, and automatic Karl Fischer titrators.
• Procedural Clarity: Steps include precise test portion weighing, solvent extraction, centrifugation, and titration, with guidelines for calibration, drift correction, and result calculation.

Applications

• Quality Assurance in Fertilizer Production: Enables manufacturers to control moisture content, helping prevent caking, degradation, and hazardous reactions during storage and transport.
• Comparative Analysis: Laboratories use this method for benchmarking different batches and brands, ensuring conformity with regulatory specifications.
• Research and Development: Facilitates accurate water determination in product formulation, aiding development of new fertilizer blends.
• Regulatory Compliance: Helps companies meet European and international requirements for fertilizer quality and packaging.

EN 13466-2:2001 is especially practical when the forms of water present can significantly affect fertilizer storage and usability, ensuring more insightful quality management than traditional gravimetric drying methods.

Related Standards

• EN 13466-1: Fertilizers - Determination of water content (Karl Fischer methods) - Part 1: Methanol as extracting medium
• EN 12048: Solid fertilizers and liming materials - Determination of moisture content - Gravimetric method by drying at (105±2) °C
• EN 12049: Solid fertilizers and liming materials - Determination of moisture content - Gravimetric method by drying under reduced pressure
• EN 1482: Sampling of solid fertilizers and liming materials

These related standards provide alternative or complementary methods for moisture analysis and sampling, supporting a comprehensive approach to quality control in the fertilizer industry.

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Keywords: EN 13466-2, fertilizer water determination, Karl Fischer titration, 2-propanol extracting medium, fertilizer quality control, solid mineral fertilizers, moisture content testing, European standard.

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.SURSDQRORPDüngemittel - Bestimmung des Wassergehaltes (Karl-Fischer-Verfahren) - Teil 2: 2-Propanol als ExtraktionsmittelEngrais - Détermination de la teneur en eau (Méthodes Karl Fischer) - Partie 2: 2-propanol comme milieu d'extractionFertilizers - Determination of water content (Karl Fischer methods) - Part 2: 2-propanol as extracting medium65.080GnojilaFertilizersICS:Ta slovenski standard je istoveten z:EN 13466-2:2001SIST EN 13466-2:2002en01-november-2002SIST EN 13466-2:2002SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 13466-2October 2001ICS 65.080English versionFertilizers - Determination of water content (Karl Fischermethods) - Part 2: 2-propanol as extracting mediumEngrais - Détermination de la teneur en eau (Méthodes KarlFischer) - Partie 2: 2-propanol comme milieu d'extractionDüngemittel - Bestimmung des Wassergehaltes (Karl-Fischer-Verfahren) - Teil 2: 2-Propanol als ExtraktionsmittelThis European Standard was approved by CEN on 18 August 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 13466-2:2001 ESIST EN 13466-2:2002

calcium sulfate hemihydrate (CaSO4·0,5H2O) ; magnesium sulfateheptahydrate (MgSO4·7H2O); potassium chloride magnesium sulfate water (1/1/2,75, Kainite, KCl·MgSO4·2,75H2O) ; potassium magnesium sulfate hexahydrate (Schoenite, K2SO4·MgSO4·6H2O) ; potassiummagnesium sulfate tetrahydrate (Leonite, K2SO4·MgSO4·4H2O) ; potassium sulfate calcium sulfate monohydrate(Syngenite, K2SO4·CaSO4·H2O); potassium chloride magnesium chloride hexahydrate (Carnallite, KCl·MgCl2·6H2O); magnesium nitrate hexahydrate (Mg(NO3)2·6H2O).Extraction with 2-propanol gives a result which is a combination of free water and extracted water of crystallizationfrom the following components of fertilizers: calcium nitrate tetrahydrate (Ca(NO3)2·4H2O) ; magnesium sulfateheptahydrate (MgSO4·7H2O); potassium chloride magnesium chloride hexahydrate (Carnallite, KCl·MgCl2·6H2O);magnesium nitrate hexahydrate (Mg(NO3)2·6H2O).SIST EN 13466-2:2002
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