EN 15561:2009

Fertilizers - Determination of total nitrogen in calcium cyanamide containing nitrates

This European Standard specifies a method for the determination of total nitrogen in calcium cyanamide.
The method is applicable to calcium cyanamide containing nitrates.

Düngemittel - Bestimmung von Gesamtstickstoff in nitrathaltigem Kalkstickstoff

Diese Europäische Norm legt ein Verfahren zur Bestimmung von Gesamtstickstoff in Kalkstickstoff (Calcium¬cyanamid) fest.
Das Verfahren ist auf Nitrate enthaltenden Kalkstickstoff anwendbar.

Engrais - Dosage de l'azote total dans la cyanamide calcique nitratée

La présente Norme européenne prescrit une méthode de dosage de l’azote total dans la cyanamide calcique
nitratée.
La méthode est applicable à la cyanamide calcique contenant des nitrates.

Gnojila - Določevanje celotnega dušika v kalcijevem cianoamidu, ki vsebuje nitrate

General Information

• Status: Withdrawn
• Publication Date: 20-Jan-2009
• Withdrawal Date: 22-Aug-2023
• ICS: 65.080 - Fertilizers
• Technical Committee: CEN/TC 260 - Fertilizers and liming materials
• Drafting Committee: CEN/TC 260/WG 7 - Chemical analysis
• Mandate: M/335 - Standardization Mandate assigned to the CEN concerning the modernisation of the methods of anylysis of Fertilizers
• Ref Project: SIST EN 15561:2009 - Fertilizers - Determination of total nitrogen in calcium cyanamide containing nitrates

Relations

• Replaces: CEN/TS 15561:2007 - Fertilizers - Determination of total nitrogen in calcium cyanamide containing nitrates
• Effective Date: 28-Jan-2009
• Replaced By: EN 15561:2023 - Inorganic fertilizers - Determination of total nitrogen in calcium cyanamide containing nitrates
• Effective Date: 18-Jan-2023

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Düngemittel - Bestimmung von Gesamtstickstoff in nitrathaltigem KalkstickstoffEngrais - Dosage de l'azote total dans la cyanamide calcique nitratéeFertilizers - Determination of total nitrogen in calcium cyanamide containing nitrates65.080GnojilaFertilizersICS:Ta slovenski standard je istoveten z:EN 15561:2009SIST EN 15561:2009en,fr,de01-junij-2009SIST EN 15561:2009SLOVENSKI
STANDARDSIST-TS CEN/TS 15561:20081DGRPHãþD

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 15561January 2009ICS 65.080Supersedes CEN/TS 15561:2007
English VersionFertilizers - Determination of total nitrogen in calcium cyanamidecontaining nitratesEngrais - Dosage de l'azote total dans la cyanamidecalcique nitratéeDüngemittel - Bestimmung von Gesamtstickstoff innitrathaltigem KalkstickstoffThis European Standard was approved by CEN on 6 December 2008.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 CEN 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 CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, 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© 2009 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 15561:2009: ESIST EN 15561:2009

It is essential to check the reducing power of the stannous chloride: dissolve 0,5 g of SnCl22H2O in 2 ml of concentrated hydrochloric acid (ρ20 = 1,18 g/ml) and make up to 50 ml with water. Then add 5 g of Rochelle salt (potassium sodium tartrate), then a sufficient quantity of sodium bicarbonate for the solution to be alkaline to litmus paper. Titrate with an iodine solution (I2) of c = 0,05 mol/l in the presence of a starch solution as an indicator. 1 ml of iodine solution (I2) of c = 0,05 mol/l corresponds to 0,011 28 g of SnCl22H2O. At least 80 % of the total tin present in the solution thus prepared shall be in bivalent form. For the titration at least 35 ml of the c = 0,1 mol/l iodine solution (I2) should be used. 5.13 Sodium hydroxide solution, containing about 30 % NaOH (ρ = 1,33 g/ml), ammonia free. 5.14 Standard nitrate-ammoniacal solution Weigh 2,5 g of potassium nitrate and 10,16 g of ammonium sulfate and place them in a 250 ml graduated flask. Dissolve in water and make up to 250 ml. 1 ml of this solution contains 0,01 g of nitrogen. SIST EN 15561:2009

Key 1 round-bottomed, long-necked flask of 1 000 ml capacity 2 distillation tube with a splash head, connected to the condenser by means of a spherical joint (No 18) (the spherical joint for the connection to the condenser may be replaced by an appropriate rubber connection) 3 funnel with a polytetrafluoroethylene (PTFE) tap (6) for the addition of sodium hydroxide (the tap may likewise be replaced by a rub
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