SIST EN 889:2023

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

This document is applicable to iron (II) sulfate heptahydrate and iron (II) sulfate monohydrate used for treatment of water intended for human consumption. It describes the characteristics of iron (II) sulfate heptahydrate and monohydrate, specifies the requirements and the corresponding analytical methods and gives information on their use in water treatment. It also determines the rules relating to safe handling and use of iron (II) sulfate.

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

Dieses Dokument ist anzuwenden für Eisen(II)sulfat-Heptahydrat und Eisen(II)sulfat-Monohydrat zur Aufbereitung von Wasser für den menschlichen Gebrauch. Es beschreibt die Eigenschaften von Eisen(II)sulfat-Heptahydrat und  Monohydrat und legt die Anforderungen sowie die entsprechenden Analysenverfahren fest. Es enthält Angaben für deren Anwendung in der Wasseraufbereitung. Es legt darüber hinaus Regeln für die sichere Handhabung und Verwendung von Eisen(II)sulfat fest.

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

Le présent document est applicable au sulfate de fer (II) heptahydraté et au sulfate de fer (II) monohydraté utilisés pour le traitement de l'eau destinée à la consommation humaine. Il décrit les caractéristiques du sulfate de fer (II) heptahydraté et monohydraté, spécifie les exigences et les méthodes d’analyse correspondantes et donne les 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 (II).

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

Ta dokument se uporablja za železov (II) sulfat heptahidrat, ki se uporablja za pripravo pitne vode. Navaja značilnosti železovega (II) sulfata heptahidrata, določa zahteve in ustrezne analitične metode za železov (II) sulfat heptahidrat (analitične metode so navedene v dodatku B) ter podaja informacije glede njegove uporabe pri pripravi vode.

General Information

• Status: Published
• Public Enquiry End Date: 19-May-2020
• Publication Date: 10-Apr-2023
• ICS: 13.060.20 - Drinking water
• ICS: 71.100.80 - Chemicals for purification of water
• Technical Committee: IOVO - Water supply and waste water engineering
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 06-Apr-2023
• Due Date: 11-Jun-2023
• Completion Date: 11-Apr-2023
• Directive: TP262 - Uredba o pitni vodi
• Ref Project: EN 889:2023 - Chemicals used for treatment of water intended for human consumption - Iron (II) sulfate

Relations

• Revised: oSIST prEN 889:2025 - Chemicals used for treatment of water intended for human consumption - Iron (II) sulfate
• Effective Date: 04-Dec-2024
• Revised: SIST EN 889:2005 - Chemicals used for treatment of water intended for human consumption - Iron (II) sulfate
• Effective Date: 01-May-2023

Overview

EN 889:2023 (CEN) is the European standard for iron (II) sulfate (ferrous sulfate) used in the treatment of water intended for human consumption. The standard covers both iron (II) sulfate heptahydrate and monohydrate and describes their identification, physical and chemical characteristics, product grades and commercial forms, requirements for purity, and rules for safe handling and use. EN 889:2023 supersedes EN 889:2004 and incorporates updates such as the addition of the monohydrate form and revised safety labelling in line with current EU regulations.

Key topics and technical requirements

• Identification and composition
  • Chemical names, synonyms (ferrous sulfate, iron vitriol, copperas), CAS numbers and formulas for heptahydrate and monohydrate.
• Commercial forms and physical properties
  • Damp crystals, free-flowing crystals, dry crystals and solutions; appearance, density, solubility and thermal behaviour are specified.
• Purity and quality criteria
  • Minimum composition and grade definitions to ensure suitability for use in drinking water treatment.
• Test methods and sampling
  • Sampling and analytical requirements are referenced; EN 889:2023 refers to EN 17215 for iron-based coagulant analytical methods.
• Labeling, transport and storage
  • Requirements for risk and safety labelling per updated EU rules, transportation regulations, marking and storage conditions (including incompatibilities and long-term stability).
• Safety and emergency procedures
  • Normative annexes provide rules on safe handling, first aid, spillage response and fire-fighting measures.

Practical applications

• Water treatment plants (drinking water) - used as an iron-based reagent in coagulation/flocculation and for specific treatment needs where iron salts are appropriate.
• Chemical suppliers and formulators - to ensure delivered products meet European requirements for composition, form and labelling.
• Laboratories and QA/QC teams - for sampling, conformity assessment and verification against the specified purity criteria.
• Health & safety officers - to implement storage, transport and emergency response measures described in the standard.

Note: Conformity with EN 889:2023 does not automatically imply regulatory approval in all EU/EFTA member states; users must also check national regulations and Drinking Water Directive requirements.

Related standards

• EN 17215 - Analytical methods for iron-based coagulants (normative reference).
• CEN/TC 164 “Water supply” - technical committee responsible for this standard.

Keywords: EN 889:2023, iron (II) sulfate, ferrous sulfate, water treatment, drinking water, heptahydrate, monohydrate, EN 17215, CEN.

Standards Content (Sample)

SLOVENSKI STANDARD
01-maj-2023
Kemikalije, ki se uporabljajo za pripravo pitne vode - Železov (II) sulfat
Chemicals used for treatment of water intended for human consumption - Iron (II) sulfate
Produkte zur Aufbereitung von Wasser für den menschlichen Gebrauch - Eisen(II)sulfat
Produits chimiques utilisés pour le traitement de l'eau destinée à la consommation
humaine - Sulfate de fer (II)
Ta slovenski standard je istoveten z: EN 889:2023
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 889
EUROPEAN STANDARD
NORME EUROPÉENNE
February 2023
EUROPÄISCHE NORM
ICS 71.100.80 Supersedes EN 889:2004
English Version
Chemicals used for treatment of water intended for human
consumption - Iron (II) sulfate
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(II)sulfat
(II)
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 889:2023 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 names . 6
4.1.2 Synonym or common names . 6
4.1.3 Relative molecular mass . 7
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 forms . 7
4.3 Physical properties . 8
4.3.1 Appearance . 8
4.3.2 Density . 8
4.3.3 Solubility (in water) . 8
4.3.4 Vapour pressure . 8
4.3.5 Boiling point at 100 kPa . 8
4.3.6 Melting point . 8
4.3.7 Specific heat . 8
4.3.8 Viscosity (dynamic) . 8
4.3.9 Critical temperature . 8
4.3.10 Critical pressure . 9
4.3.11 Physical hardness . 9
4.4 Chemical properties . 9
5 Purity criteria . 9
5.1 General . 9
5.2 Composition of commercial product . 9
5.3 The grade of the product . 9
5.4 The type of the product . 10
6 Test methods . 10
6.1 Sampling . 10
6.2 Analyses . 10
7 Labelling - Transportation - Storage . 11
7.1 Means of delivery . 11
7.2 Risk and safety labelling according to the EU Directives . 11
7.3 Transportation regulations and labelling . 11
7.4 Marking . 12
7.5 Storage . 12
7.5.1 Long term stability . 12
7.5.2 Storage incompatibilities . 12
Annex A (informative) General information on iron (II) sulfate . 13
A.1 Origin . 13
A.1.1 Raw materials . 13
A.1.2 Manufacturing process . 13
A.2 Quality of commercial product . 13
A.3 Use . 15
A.3.1 Function . 15
A.3.2 Form in which it is used. 15
A.3.3 Treatment dose . 15
A.3.4 Means of application . 15
A.3.5 Secondary effects . 15
A.3.6 Removal of excess product . 15
Annex B (normative) General rules relating to safety . 16
B.1 General rules relating to safety . 16
B.2 Emergency procedures . 16
B.2.1 First aid . 16
B.2.2 Spillage . 16
B.2.3 Fire . 16
Bibliography . 17

European foreword
This document (EN 889:2023) 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 889:2004.
— 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]);
— addition of iron (II) sulfate monohydrate;
— 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 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.
1 Scope
This document is applicable to iron (II) sulfate heptahydrate and iron (II) sulfate monohydrate used for
treatment of water intended for human consumption. It describes the characteristics of iron (II) sulfate
heptahydrate and monohydrate, specifies the requirements and the corresponding analytical methods
and gives information on their use in water treatment. It also determines the rules relating to safe
handling and use of iron (II) sulfate.
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 17215, Chemicals used for treatment of water intended for human consumption — Iron-based
coagulants — Analytical methods
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
• ISO Online browsing platform: available at https://www.iso.org/obp
• IEC Electropedia: available at https://www.electropedia.org/
4 Descripti
...