EN 12123:2022

Chemicals used for treatment of water intended for human consumption - Ammonium sulfate

This document is applicable to ammonium sulfate used for treatment of water intended for human consumption. It describes the characteristics and specifies the requirements of ammonium sulfate and refers to the corresponding analytical methods. It gives information on its use in water treatment.

Produkte zur Aufbereitung von Wasser für den menschlichen Gebrauch - Ammoniumsulfat

Dieses Dokument ist anzuwenden für Ammoniumsulfat zur Aufbereitung von Wasser für den menschlichen Gebrauch. Es beschreibt die Eigenschaften von Ammoniumsulfat, legt die Anforderungen an Ammoniumsulfat fest und verweist auf die entsprechenden Analysenverfahren. Es enthält Angaben zu dessen Anwendung in der Wasseraufbereitung.

Produits chimiques utilisés pour le traitement de l’eau destinée à la consommation humaine - Sulfate d'ammonium

Le présent document s’applique au sulfate d’ammonium utilisé pour le traitement de l’eau destinée à la consommation humaine. Il décrit les caractéristiques du sulfate d’ammonium, en spécifie les exigences ainsi que les méthodes d’analyse correspondante. Il donne des informations pour son emploi dans le traitement de l’eau.

Kemikalije, ki se uporabljajo za pripravo pitne vode - Amonijev sulfat

Ta dokument obravnava amonijev sulfat, ki se uporablja za pripravo pitne vode. Opisuje značilnosti in določa zahteve za amonijev sulfat ter se navezuje na ustrezne analizne metode. Podaja informacije za njegovo uporabo pri pripravi vode.

General Information

• Status: Published
• Publication Date: 19-Apr-2022
• Withdrawal Date: 30-Oct-2022
• ICS: 71.100.80 - Chemicals for purification of water
• Technical Committee: CEN/TC 164 - Water supply
• Drafting Committee: CEN/TC 164/WG 9 - Drinking water treatment
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 20-Apr-2022
• Due Date: 04-Dec-2021
• Completion Date: 20-Apr-2022
• Ref Project: SIST EN 12123:2022 - Chemicals used for treatment of water intended for human consumption - Ammonium sulfate

Relations

• Replaces: EN 12123:2012 - Chemicals used for treatment of water intended for human consumption - Ammonium sulfate
• Effective Date: 08-Jun-2022

Overview

EN 12123:2022 - published by CEN - is the European standard for ammonium sulfate used in the treatment of water intended for human consumption. The document defines the chemical identification, physical and chemical characteristics, purity criteria, analytical and sampling methods, and practical information on use, labelling, transportation and storage. EN 12123:2022 supersedes EN 12123:2012 and applies to suppliers, laboratories and water professionals across CEN member countries.

Key topics and requirements

• Scope & identification
  • Covers ammonium sulfate for drinking-water treatment; chemical name, CAS (7783-20-2), EINECS (213-984-1), and relative molecular mass (132.14) are specified.
• Physical properties
  • Commercial form: white, fine crystalline powder.
  • Density: 1.8 g·cm⁻3 at 20 °C; solubility: ~767 g·L⁻1 at 25 °C; decomposition >235 °C.
• Purity & composition
  • Defines composition of commercial product, expected impurities and main by-products, and required chemical parameters (see clauses on purity criteria and impurities).
• Test methods & sampling
  • Refers to standardized analytical and sampling procedures (sampling of solids, titrimetric and photometric analyses) and specifies laboratory conditions for reliable results.
• Labelling, transport & storage
  • Requirements for labelling (including accompanying documents), transport rules and storage compatibility; updated guidance on transportation incompatibilities and marking.
• Safety & annexes
  • Informative Annex A: origin, manufacturing, dosing, application methods and secondary effects in water treatment.
  • Normative Annex B: general rules for safe handling, spillage, first aid and fire response.

Practical applications and users

EN 12123:2022 is intended for:

• Water utilities and water treatment plant operators selecting coagulants or pH-adjusting chemicals.
• Chemical manufacturers and suppliers who must label and certify ammonium sulfate for potable water applications.
• Analytical and quality control laboratories performing compliance testing and sampling.
• Regulators and procurement teams validating product specifications for public drinking-water systems. Practical uses include pH adjustment, nutrient dosing for specific processes, and other water treatment functions described in Annex A.

Related standards

EN 12123:2022 references several normative documents for methods and quality control, including:

• EN ISO 3696 (Water for analytical laboratory use)
• ISO 760 (Karl Fischer water determination)
• ISO 2992 / ISO 2993 / ISO 3332 (ammonium sulfate analysis methods)
• ISO 5993, ISO 6353-1, ISO 8213 (related analytical and sampling techniques)

Conformance with EN 12123:2022 supports consistent quality, analytical traceability and regulatory alignment for ammonium sulfate used in drinking-water treatment.

Standards Content (Sample)

SLOVENSKI STANDARD
01-junij-2022
Nadomešča:
SIST EN 12123:2013
Kemikalije, ki se uporabljajo za pripravo pitne vode - Amonijev sulfat
Chemicals used for treatment of water intended for human consumption - Ammonium
sulfate
Produkte zur Aufbereitung von Wasser für den menschlichen Gebrauch -
Ammoniumsulfat
Produits chimiques utilisés pour le traitement de l’eau destinée à la consommation
humaine - Sulfate d'ammonium
Ta slovenski standard je istoveten z: EN 12123:2022
ICS:
13.060.20 Pitna voda Drinking water
71.100.80 Kemikalije za čiščenje vode Chemicals for purification of
water
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 12123
EUROPEAN STANDARD
NORME EUROPÉENNE
April 2022
EUROPÄISCHE NORM
ICS 71.100.80 Supersedes EN 12123:2012
English Version
Chemicals used for treatment of water intended for human
consumption - Ammonium sulfate
Produits chimiques utilisés pour le traitement de l'eau Produkte zur Aufbereitung von Wasser für den
destinée à la consommation humaine - Sulfate menschlichen Gebrauch - Ammoniumsulfat
d'ammonium
This European Standard was approved by CEN on 13 March 2022.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC 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
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

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. EN 12123:2022 E
worldwide for CEN national Members.

Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitons . 6
4 Description . 6
4.1 Identification . 6
4.1.1 Chemical name . 6
4.1.2 Synonym or commons name . 6
4.1.3 Relative molecular mass . 6
4.1.4 Empirical formula . 7
4.1.5 Chemical formula . 7
4.1.6 CAS-Registry Number . 7
4.1.7 EINECS reference . 7
4.2 Commercial form . 7
4.3 Physical properties . 7
4.3.1 Appearance . 7
4.3.2 Density . 7

4.3.3 Solubility in water . 7
4.3.4 Vapour pressure . 7
4.3.5 Boiling point at 100 kPa . 7
4.3.6 Crystallization point . 7
4.3.7 Specific heat . 7
4.3.8 Viscosity dynamic . 7
4.3.9 Critical temperature . 7
4.3.10 Critical pressure . 8
4.3.11 Physical hardness . 8
4.4 Chemical properties . 8
5 Purity criteria . 8
5.1 General. 8
5.2 Composition of commercial product . 8
5.3 Impurities and main by-products . 9
5.4 Chemical parameters. 9
6 Test methods . 9
6.1 Sampling . 9
6.2 Analyses. 10
6.2.1 Main product . 10
6.2.2 Impurities . 10
6.2.3 Chemical parameters. 10
7 Labelling, transportation, storage . 15
7.1 Means of delivery . 15
7.2 Labelling according to the EU legislation . 15
7.3 Transportation regulations and labelling . 15
7.4 Marking . 15
7.5 Storage . 15
7.5.1 Long term stability . 15
7.5.2 Storage incompatibilities . 15
Annex A (informative) General information on ammonium sulfate . 16
A.1 Origin . 16
A.1.1 Raw materials . 16
A.1.2 Manufacturing process . 16
A.2 Use . 16
A.2.1 Function . 16
A.2.2 Form in which it is used . 16
A.2.3 Treatment dose . 16
A.2.4 Means of application. 16
A.2.5 Secondary effects . 16
A.2.6 Removal of excess product . 16
Annex B (normative) General rules relating to safety . 17
B.1 Rules for safe handling and use . 17
B.2 Emergency procedures . 17
B.2.1 First aid . 17
B.2.2 Spillage . 17
B.2.3 Fire . 17
Bibliography . 18
European foreword
This document (EN 12123:2022) has been prepared by Technical Committee CEN/TC 164 “Water
supply”, the secretariat of which is held by AFNOR.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by October 2022, and conflicting national standards shall
be withdrawn at the latest by October 2022.
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 supersedes EN 12123:2012.
In comparison with the previous edition EN 12123:2012, the following technical modifications have
been made:
a) modification of 7.3 on transportation regulations and labelling, adding the sentence “The user shall
be aware of the incompatibilities between transported products.”;
b) modification of 7.4 on marking. The requirements of marking are also applied to the accompanying
documents.
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 organisations of the
following countries are bound to implement this European Standard: 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.
Introduction
In respect of potential adverse effects on the quality of water intended for human consumption caused
by the product covered by this document:
a) this document provides no information as to whether the product may be used without restriction
in any of the Member States of the EU or EFTA;
b) it should be noted that, while awaiting the adoption of verifiable European criteria, existing
national regulations concerning the use and/or the characteristics of this product remain in force.
NOTE Conformity with this document does not confer or imply acceptance or approval of the product in any
of the Member States of the EU or EFTA. The use of the product covered by this document is subject to regulation
or control by National Authorities (see Annex A).
1 Scope
This document is applicable to ammonium sulfate used for treatment of water intended for human
consumption. It describes the characteristics and specifies the requirements of ammonium sulfate and
refers to the corresponding analytical methods. It gives information on its use in water treatment.
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 ISO 3696, Water for analytical laboratory use — Specification and test methods (ISO 3696)
ISO 760, Determination of water — Karl Fischer method (General method)
ISO 2992, Ammonium sulphate for industrial use — Determination of iron content — 2,2'- Bipyridyl
photometric method
ISO 2993, Ammonium sulphate for industrial use — Determination of free acidity — Titrimetric method
ISO 3332, Ammonium sulphate for industrial use — Determination of ammoniacal nitrogen content —
Titrimetric method after distillation
ISO 5993, Sodium hydroxide for industrial use — Determination of mercury content — Flameless atomic
absorption spectrometric method
ISO 6353-1, Reagents for chemical analysis — Part 1: General test methods
ISO 8213, Chemical products for industrial use — Sampling techniques — Solid chemical products in the
form of particles varying from powders to coarse lumps
3 Terms and definitons
No terms and definitions are listed in this document.
ISO and IEC maintain terminological database
...