CEN/TS 17761:2022

Inorganic fertilizers - Determination of the chloride content in ammonium nitrate fertilizers of high nitrogen content

This document specifies a method for the determination of the chloride content in ammonium nitrate fertilizers of high nitrogen content.

Anorganische Düngemittel - Bestimmung des Chloridgehaltes in Ammoniumnitratdüngemitteln mit hohem Stickstoffgehalt

Dieses Dokument legt ein Verfahren zur Bestimmung des Chloridgehalts in Ammoniumnitratdüngemitteln mit hohem Stickstoffgehalt fest.

Engrais inorganiques - Détermination de la teneur en chlorure des engrais à base de nitrate d'ammonium à forte teneur en azote

Le présent document spécifie une méthode de détermination de la teneur en chlorure des engrais à base de nitrate d’ammonium à forte teneur en azote.

Anorganska gnojila - Določevanje klorida v gnojilih iz amonijevega nitrata z veliko vsebnostjo dušika

Ta dokument določa metodo za določevanje klorida v gnojilih iz amonijevega nitrata z veliko vsebnostjo dušika.

General Information

• Status: Published
• Publication Date: 05-Apr-2022
• ICS: 65.080 - Fertilizers
• Technical Committee: CEN/TC 260 - Fertilizers and liming materials
• Drafting Committee: CEN/TC 260/WG 7 - Chemical analysis
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 06-Apr-2022
• Due Date: 18-Jan-2023
• Completion Date: 06-Apr-2022
• Directive: 2019/1009 - Regulation (EU) 2019/1009 of the European Parliament and of the Council of 5 June 2019 laying down rules on the making available on the market of EU fertilising products and amending Regulations (EC) No 1069/2009 and (EC) No 1107/2009 and repealing Regulation (EC) No 2003/2003
• Mandate: M/564 - Fertilising products in support of Regulation (EU) 2019/1009
• Ref Project: SIST-TS CEN/TS 17761:2023 - Inorganic fertilizers - Determination of the chloride content in ammonium nitrate fertilizers of high nitrogen content

Overview

CEN/TS 17761:2022 (CEN) specifies a laboratory method for the determination of chloride (Cl) in ammonium nitrate fertilizers of high nitrogen content. The method uses a potentiometric titration with silver nitrate (AgNO3) in an acidic medium and is intended for routine quality control, regulatory verification and accurate laboratory reporting of chloride levels in fertilizer products.

Key Topics

• Principle: Chloride ions dissolved in water are titrated potentiometrically with a silver nitrate solution in an acidic acetone/water medium, using a silver indicating electrode and a calomel reference electrode.
• Reagents (selected): chloride-free water, acetone, concentrated nitric acid, silver nitrate solutions (stock and working), potassium chloride standard solutions.
• Apparatus (selected): analytical balance, oven and desiccator, potentiometer with silver and calomel electrodes, bridge with saturated KNO3, magnetic stirrer with PTFE rod, microburette with 0.01 ml graduations.
• Sampling & sample prep: Sample preparation is carried out in accordance with EN 1482-2 (referenced normative document). Sampling itself is outside the method but EN 1482-1 is recommended.
• Procedure highlights:
  • Standardize the AgNO3 solution using KCl standard aliquots and record potential versus volume.
  • Perform a blank test and a check test to validate reagents and apparatus.
  • Titrate test portions (sample mass range 10 g to 20 g) and determine the endpoint from the maximum increment in potential.
• Result expression: Results are expressed as the percentage of chlorine (Cl) in the fertilizer as received. The calculation accounts for titration volume, blank correction and the concentration of the AgNO3 solution.

Applications

This Technical Specification is designed for:

• Routine quality control of ammonium nitrate fertilizers with high nitrogen content.
• Regulatory and compliance testing where chloride limits must be demonstrated.
• Laboratory workflows requiring a validated potentiometric titration method for chloride determination.

Benefits include consistent test reporting, harmonization across CEN member laboratories, and support for converting the specification to a formal European Standard following the provisional period.

Related Standards

• EN 1482-2 - Fertilizers and liming materials: Sample preparation (referenced for sample handling)
• EN 1482-1 - Fertilizers and liming materials: Sampling (recommended for sampling practice)
• EN 12944-1 / EN 12944-2 - Vocabulary and terms related to fertilizers (terms and definitions used)

For test reporting, include full sample identification, reference to CEN/TS 17761:2022, results as % Cl (as received), sampling and analysis dates, and any operational details or incidents that could affect results.

Standards Content (Sample)

SLOVENSKI STANDARD
01-februar-2023
Anorganska gnojila - Določevanje klorida v gnojilih iz amonijevega nitrata z veliko
vsebnostjo dušika
Inorganic fertilizers - Determination of the chloride content in ammonium nitrate fertilizers
of high nitrogen content
Anorganische Düngemittel - Bestimmung des Chloridgehaltes in
Ammoniumnitratdüngemitteln mit hohem Stickstoffgehalt
Engrais inorganiques - Détermination de la teneur en chlorure des engrais à base de
nitrate d'ammonium à forte teneur en azote
Ta slovenski standard je istoveten z: CEN/TS 17761:2022
ICS:
65.080 Gnojila Fertilizers
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

CEN/TS 17761
TECHNICAL SPECIFICATION
SPÉCIFICATION TECHNIQUE
April 2022
TECHNISCHE SPEZIFIKATION
ICS 65.080
English Version
Inorganic fertilizers - Determination of the chloride
content in ammonium nitrate fertilizers of high nitrogen
content
Engrais inorganiques - Détermination de la teneur en Anorganische Düngemittel - Bestimmung des
chlorure des engrais à base de nitrate d'ammonium à Chloridgehaltes in Ammoniumnitratdüngemitteln mit
forte teneur en azote hohem Stickstoffgehalt
This Technical Specification (CEN/TS) was approved by CEN on 13 March 2022 for provisional application.

The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to
submit their comments, particularly on the question whether the CEN/TS can be converted into a European Standard.

CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS
available promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in
parallel to the CEN/TS) until the final decision about the possible conversion of the CEN/TS into an EN is reached.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TS 17761:2022 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Principle . 4
5 Reagents . 4
6 Apparatus and equipment . 5
7 Sampling and sample preparation . 5
8 Procedure . 5
8.1 Standardization of the silver nitrate solution . 5
8.2 Blank test . 6
8.3 Check test . 7
8.4 Determination . 7
9 Calculation and expression of the result . 7
10 Test report . 7
Bibliography . 8

European foreword
This document (CEN/TS 17761:2022) has been prepared by Technical Committee CEN/TC 260
“Fertilizers and liming materials”, the secretariat of which is held by DIN.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document has been prepared under a Standardization Request given to CEN by the European
Commission and the European Free Trade Association.
WARNING — The use of this document can involve hazardous materials, operations and equipment. This
document does not purport to address all the safety problems associated with its use. It is the
responsibility of the user of this document to establish appropriate safety and health practices and
determine the applicability of regulatory limitations prior to use.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to announce this Technical Specification: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United
Kingdom.
1 Scope
This document specifies a method for the determination of the chloride content in ammonium nitrate
fertilizers of high nitrogen content.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 1482-2, Fertilizers and liming materials — Sampling and sample preparation — Part 2: Sample
preparation
EN 12944-1, Fertilizers and liming materials — Vocabulary — Part 1: General terms
EN 12944-2, Fertilizers and liming materials — Vocabulary — Part 2: Terms relating to fertilizers
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 12944-1 and EN 12944-2 apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at https://www.elec
...