EN 890:2023

Chemicals used for treatment of water intended for human consumption - Iron (III) sulfate solution

This document is applicable to iron (III) sulfate solution of various iron and/or acid contents (see 4.2) used for treatment of water intended for human consumption. It describes the characteristics of iron (III) sulfate solution and specifies the requirements and the corresponding analytical methods for iron (III) sulfate solution and gives information on its use in water treatment. It also determines the rules relating to safe handling and use of iron (III) sulfate solution.

Produkte zur Aufbereitung von Wasser für den menschlichen Gebrauch - Eisen(III)sulfat-Lösung

Dieses Dokument gilt für Eisen(III)sulfat-Lösung mit unterschiedlichen Eisen- und/oder Säuregehalten (siehe 4.2) zur Aufbereitung von Wasser für den menschlichen Gebrauch. Es beschreibt die Eigenschaften von Eisen(III)sulfat-Lösung und legt die Anforderungen sowie die entsprechenden Analysenverfahren für Eisen(III)sulfat-Lösung fest. Es enthält Angaben für deren Anwendung in der Wasseraufbereitung. Es legt darüber hinaus Regeln für die sichere Handhabung und Verwendung von Eisen(III)sulfat-Lösung fest.

Produits chimiques utilisés pour le traitement de l'eau destinée à la consommation humaine - Sulfate de fer (III) liquide

Le présent document est applicable au sulfate de fer (III) liquide de différentes teneurs en fer et/ou acide (voir 4.2) utilisé pour le traitement de l'eau destinée à la consommation humaine. Il décrit les caractéristiques du sulfate de fer (III) liquide, spécifie les exigences et les méthodes d'analyse correspondantes pour le sulfate de fer (III) liquide et donne des informations sur son utilisation dans le traitement de l'eau. Il fixe également les règles relatives à la sécurité de manipulation et d’utilisation du sulfate de fer (III) liquide.

Kemikalije, ki se uporabljajo za pripravo pitne vode - Železov (III) sulfat, raztopina

Ta dokument se uporablja za raztopino železovega (III) sulfata z različno vsebnostjo železa in/ali kisline (glej točko 3.2), ki se uporablja za pripravo pitne vode. Navaja značilnosti raztopine železovega (III) sulfata, določa zahteve in ustrezne analitične metode za raztopino železovega (III) sulfata (analitične metode so navedene v dodatku B) ter podaja informacije glede njene uporabe pri pripravi vode. Določa tudi pravila za varno ravnanje z raztopino železovega (III) sulfata in njeno uporabo (glej dodatek E).

General Information

• Status: Published
• Publication Date: 14-Feb-2023
• 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: 15-Feb-2023
• Due Date: 04-Aug-2021
• Completion Date: 15-Feb-2023
• Ref Project: SIST EN 890:2023 - Chemicals used for treatment of water intended for human consumption - Iron (III) sulfate solution

Relations

• Replaces: EN 890:2012 - Chemicals used for treatment of water intended for human consumption - Iron (III) sulfate solution
• Effective Date: 19-Jan-2023
• Revised: prEN 890 - Chemicals used for treatment of water intended for human consumption - Iron (III) sulfate solution
• Effective Date: 04-Dec-2024

Overview

EN 890:2023 - published by CEN - is the European standard that defines the characteristics, minimum purity requirements and safe-use rules for iron (III) sulfate solution used in the treatment of water intended for human consumption (drinking water). It supersedes EN 890:2012 and was approved by CEN on 25 December 2022. The standard covers commercial solution forms of ferric sulfate (Fe2(SO4)3, CAS 10028‑22‑5, EINECS 233‑072‑9) and provides practical information on properties, composition and handling for water treatment applications.

Key topics

• Scope and identification - chemical name, synonyms (e.g., ferric sulfate liquor), molecular mass and chemical formula.
• Physical & chemical properties - red/brown solution, density ≈ 1.5 g·cm‑3 at 20 °C, viscosity range (5–130 mPa·s at 10 °C), freezing point < −15 °C, boiling point > 100 °C; solutions are acidic and corrosive.
• Purity criteria - minimum purity requirements and limits for commonly present impurities; manufacturers must notify users of other impurities when present.
• Analytical methods - EN 890:2023 removes embedded analytical procedures and references EN 17215 for iron‑based coagulant analysis.
• Labelling, transport and storage - updated risk and safety labelling to align with current EU regulations; transportation and marking requirements and storage incompatibilities.
• Safety & emergency rules - handling, first aid, spillage and fire procedures (Annex B).
• Use guidance (informative Annex A) - origin, manufacturing, dosing forms, application methods and secondary effects in water treatment.

Applications

EN 890:2023 is directly relevant to the use of iron (III) sulfate solution as a coagulant/flocculant and pH‑adjusting agent in drinking water treatment, including:

• coagulation and removal of suspended solids and natural organic matter,
• color and turbidity reduction,
• pre‑treatment steps before filtration and disinfection.

The standard helps ensure product quality and safety when dosing chemical coagulants into water intended for human consumption.

Who should use this standard

• Water utilities and operators responsible for drinking water treatment and procurement.
• Chemical manufacturers and suppliers of iron (III) sulfate solution.
• Laboratory analysts performing quality control (see EN 17215).
• Health, safety and environmental officers managing storage, transport and emergency response.
• Regulators and technical consultants assessing compliance with drinking water requirements.

Related standards

• EN 17215 - Chemicals used for treatment of water intended for human consumption - Iron‑based coagulants - Analytical methods (referenced for analyses).
• Applicable EU drinking water legislation and national regulations on chemical use in potable water systems.

EN 890:2023 is an essential reference for ensuring consistent quality, safe handling and compliant use of iron (III) sulfate solution in drinking water treatment.

Standards Content (Sample)

SLOVENSKI STANDARD
01-maj-2023
Nadomešča:
SIST EN 890:2012
Kemikalije, ki se uporabljajo za pripravo pitne vode - Železov (III) sulfat, raztopina
Chemicals used for treatment of water intended for human consumption - Iron (III) sulfate
solution
Produkte zur Aufbereitung von Wasser für den menschlichen Gebrauch - Eisen(III)sulfat-
Lösung
Produits chimiques utilisés pour le traitement de l'eau destinée à la consommation
humaine - Sulfate de fer (III) liquide
Ta slovenski standard je istoveten z: EN 890:2023
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 890
EUROPEAN STANDARD
NORME EUROPÉENNE
February 2023
EUROPÄISCHE NORM
ICS 71.100.80 Supersedes EN 890:2012
English Version
Chemicals used for treatment of water intended for human
consumption - Iron (III) sulfate solution
Produits chimiques utilisés pour le traitement de l'eau Produkte zur Aufbereitung von Wasser für den
destinée à la consommation humaine - Sulfate de fer menschlichen Gebrauch - Eisen(III)sulfat-Lösung
(III) liquide
This European Standard was approved by CEN on 25 December 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, Türkiye 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
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 890:2023 E
worldwide for CEN national Members.

Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Description . 6
4.1 Identification . 6
4.1.1 Chemical name . 6
4.1.2 Synonym or common names . 6
4.1.3 Relative molecular mass . 6
4.1.4 Empirical formula . 6
4.1.5 Chemical formula . 6
4.1.6 CAS Registry Number . 6
4.1.7 EINECS reference . 7
4.2 Commercial forms . 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 Freezing 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 . 7
4.3.11 Physical hardness . 7
4.4 Chemical properties . 7
5 Purity criteria . 8
5.1 General . 8
5.2 Composition of commercial product . 8
5.3 The grade of the product . 8
5.4 The type of the product . 8
6 Test methods . 9
6.1 Sampling . 9
6.2 Analyses . 9
7 Labelling - Transportation - Storage . 9
7.1 Means of delivery . 9
7.2 Risk and safety labelling according to the EU Directives . 9
7.3 Transportation regulations and labelling . 10
7.4 Marking . 11
7.5 Storage . 11
7.5.1 Long term stability . 11
7.5.2 Storage incompatibilities . 11
Annex A (informative) General information on iron (III) sulfate solution . 12
A.1 Origin . 12
A.1.1 Raw materials . 12
A.1.2 Manufacturing process . 12
A.2 Quality of commercial product . 12
A.3 Use . 13
A.3.1 Function . 13
A.3.2 Form in which it is used . 13
A.3.3 Treatment dose . 13
A.3.4 Means of application. 14
A.3.5 Secondary effects . 14
A.3.6 Removal of excess product . 14
Annex B (normative) General rules relating to safety . 15
B.1 Rules for safe handling and use . 15
B.2 Emergency procedures . 15
B.2.1 First aid . 15
B.2.2 Spillage . 15
B.2.3 Fire . 15
Bibliography . 16

European foreword
This document (EN 890:2023) 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 August 2023, and conflicting national standards shall
be withdrawn at the latest by August 2023.
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 890:2012.
— removal of the analytical methods from this document and addition of reference to EN 17215 as
analytical method standard;
— update of the information of risk and safety labelling of the product to comply with the new
regulations (see 7.2 and [2]);
— update of the information related to Drinking Water Directive.
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, Türkiye 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 adopti
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