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CEN
EN 13466-1:2001

EN 13466-1:2001

Current

Current

The latest, up-to-date edition.

Fertilizers - Determination of water content (Karl Fischer methods) - Part 1: Methanol as extracting medium

Published date

10-10-2001

Publisher

Comite Europeen de Normalisation

Foreword
Introduction
1 Scope
2 Normative references
3 Principle
4 Reagents
5 Apparatus
6 Installation and test of the Karl Fischer titrator
7 Sampling
8 Procedure
9 Calculation and expression of results
10 Precision
11 Test report
Bibliography

This European Standard specifies a Karl Fischer titrimetric method for the determination of the water content of fertilizers based on the use of methanol as extracting medium.The method is applicable to all solid mineral fertilizers. The result (KFM water) includes "free" water and extracted water of crystallization from the following components of fertilizers: calcium nitrate tetrahydrate (Ca(NO3)2·4H2O); calcium hydrogen phosphate dihydrate (CaHPO4·2H2O); calcium sulfate dihydrate (gypsum, CaSO4·2H2O), calcium sulfate hemihydrate (CaSO4·0,5H2O); magnesium sulfate heptahydrate (MgSO4·7H2O) ; potassium chloride magnesium sulfate water (1/1/2,75, Kainite, KCl·MgSO4·2,75H2O); potassium magnesium sulfate hexahydrate (Schoenite, K2SO4·MgSO4·6H2O); potassium magnesium 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).Metal oxides and hydroxides soluble in methanol and pyridine will have an effect which can be corrected for, if their content is known.

Committee
CEN/TC 260
DocumentType
Standard
PublisherName
Comite Europeen de Normalisation
Status
Current

14/30280953 DC : 0 BS ISO 18642 - FERTILIZER AND SOIL CONDITIONERS - FERTILIZER GRADE UREA - GENERAL REQUIREMENTS
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DIN EN 14787 E : 2005 FERTILIZERS AND LIMING MATERIALS - DETERMINATION OF WATER CONTENT - GUIDELINES AND RECOMMENDATIONS
BS EN 14787:2005 Fertilizers and liming materials. Determination of water content. Guidelines and recommendations
DIN EN 14787:2005-07 Fertilizers and liming materials - Determination of water content - Guidelines and recommendations

EN 1482:1996/AC:1996 SAMPLING OF SOLID FERTILIZERS AND LIMING MATERIALS
EN 12049:1996 Solid fertilizers and liming materials - Determination of moisture content - Gravimetric method by drying under reduced pressure (ISO 8189:1992 modified)
ISO 8190:1992 Solid fertilizers — Determination of moisture content — Gravimetric method by drying at (105 plus or minus 2) degrees C
EN 12048:1996 Solid fertilizers and liming materials - Determination of moisture content - Gravimetric method by drying at (105 +/- 2)°C (ISO 8190:1992 modified)
ISO 8189:1992 Solid fertilizers — Determination of moisture content — Gravimetric method by drying under reduced pressure

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