SIST EN 13466-2:2002

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: 31-Oct-2002
• ICS: 65.080 - Fertilizers
• Technical Committee: KAT - Soil quality
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Nov-2002
• Due Date: 01-Nov-2002
• Completion Date: 01-Nov-2002
• Ref Project: EN 13466-2:2001 - Fertilizers - Determination of water content (Karl Fischer methods) - Part 2: 2-propanol as extracting medium

Overview

SIST EN 13466-2:2002 is a European standard developed by CEN for the determination of water content in solid mineral fertilizers using Karl Fischer titration with 2-propanol as the extracting medium. This standardized method provides precise and reliable measurement of both free water and water of crystallization in fertilizers, which is critical for quality control, storage, and handling.

The method applies specifically to fertilizers containing components such as calcium nitrate tetrahydrate, magnesium sulfate heptahydrate, potassium chloride magnesium chloride hexahydrate (Carnallite), and magnesium nitrate hexahydrate. It enables manufacturers, laboratories, and quality control professionals to assess moisture content accurately, ensuring compliance with industry standards and optimizing fertilizer performance.

Key Topics

• Karl Fischer Titration: A sensitive electrochemical technique for measuring trace water content in fertilizers.
• 2-Propanol Extracting Medium: Used to extract water efficiently while differentiating free water from crystallization water in certain chemical fertilizer components.
• Applicability: Suitable for all solid mineral fertilizers, covering key hydrated compounds that impact fertilizer stability.
• Sampling and Preparation: Sampling in accordance with EN 1482 ensures representativeness and reproducibility.
• Precision and Repeatability: Defines limits of repeatability and reproducibility, supported by interlaboratory testing involving multiple fertilizer types.
• Instrumentation: Use of balance with 0.0001 g accuracy, centrifuge, dispersing apparatus (e.g., Ultra Turrax), and Karl Fischer titrator.
• Calculation Formula: Provides a clear method to calculate water content, correcting for blank and drift values.
• Quality Assurance: Detailed procedure ensures reliable results that support quality control and regulatory compliance in fertilizer production.

Applications

• Fertilizer Quality Control
  Accurate water content analysis helps manufacturers maintain consistent product quality and prevent issues related to excess moisture, such as caking or reduced nutrient effectiveness.

• Storage and Handling Optimization
  Understanding moisture levels assists in selecting appropriate storage conditions to preserve fertilizer integrity and prolong shelf life.

• Regulatory and Compliance Testing
  Ensures that fertilizers meet European and international standards for moisture content, supporting market acceptance and trade.

• Research and Development
  Supports formulation improvements by providing precise water content measurement during product development stages.

• Environmental and Safety Assessments
  Moisture data can influence the assessment of handling risks related to dust formation and chemical stability.

Related Standards

• EN 13466-1:2001 – Specifies Karl Fischer water determination using methanol as extracting medium; a complementary method covering a wider range of water forms.
• EN 1482 – Sampling of solid fertilizers and liming materials, critical for representative testing.
• EN 12048 and EN 12049 – Gravimetric methods for moisture content determination, primarily via drying techniques for comparison and validation.
• ISO 8190:1992 and ISO 8189:1992 – International standards related to gravimetric moisture determination referenced in the bibliography.

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By adhering to SIST EN 13466-2:2002, fertilizer producers and testing laboratories can achieve highly accurate, consistent, and reproducible results for water content determination, enhancing product quality and compliance with European agricultural standards.

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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