kSIST FprEN 890:2026
(Main)Chemicals used for treatment of water intended for human consumption - Iron (III) sulfate solution
General Information
- Abstract
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 specifies the rules relating to safe handling (Annex B) and describes the use of iron (III) sulfate solution (Annex A).
- Status
- Not Published
- Public Enquiry End Date
- 29-Sep-2025
- Technical Committee
- IOVO - Water supply and waste water engineering
- Current Stage
- 5020 - Formal vote (FV) (Adopted Project)
- Start Date
- 28-Aug-2026
- Due Date
- 16-Oct-2026
- Completion Date
- 02-Sep-2026
Overview
kSIST FprEN 890:2026 specifies the requirements, analytical methods, and safe use practices for iron (III) sulfate solution used in the treatment of drinking water. Issued by SIST, this standard outlines quality criteria, purity requirements, and safety guidelines to ensure that iron (III) sulfate solution is suitable for water intended for human consumption. As a widely used water treatment chemical, iron (III) sulfate solution acts as a primary coagulant to help remove contaminants, improving water clarity and safety.
Key Topics
- Product identification: Iron (III) sulfate solution, also known as ferric sulfate liquor or red iron liquor, with empirical formula Fe₂(SO₄)₃ and CAS number 10028-22-5.
- Physical and chemical properties:
- Appearance: red/brown solution
- Density: approximately 1.5 g/cm³ at 20°C
- Acidic and corrosive nature
- Purity and quality requirements:
- Commercial grades and types defined by maximum allowable impurities (e.g., manganese, chromium, mercury, lead) to ensure safe drinking water.
- Compliance with Directive (EU) 2020/2184 on drinking water quality.
- Analytical methods:
- Prescribes sampling and analytical techniques for verifying purity using established European standards (e.g., EN 17215).
- Labelling, transportation, and storage:
- Requirements for clear product identification, compliance labelling, and transportation as a hazardous substance (UN 3264, Class 8).
- Storage only in compatible materials such as stainless steel or certain plastics.
Applications
Iron (III) sulfate solution is primarily used for:
- Municipal water treatment plants: As a coagulant, iron (III) sulfate promotes the aggregation and removal of suspended solids, organic matter, and other impurities from raw water.
- Industrial water processing: Used in processes requiring high water quality, including food and beverage production, pharmaceuticals, and electronics manufacturing.
- Adjusting water quality parameters: Helps reduce turbidity and remove color, along with reducing levels of iron, manganese, and phosphates.
- Sludge production and handling: The precipitate formed (ferric hydroxide) aids in sedimentation and filtration processes.
- Safe drinking water: Contributes to compliance with international and national standards for potable water by controlling trace metal additions during treatment.
Safe Handling and Environmental Considerations:
- The product is acidic and corrosive, requiring the use of suitable containers and personal protective equipment.
- Instructions for emergency response, spillage cleanup, and first aid are mandatory to minimize risks.
Related Standards
Professionals implementing or referencing kSIST FprEN 890:2026 should also consult:
- EN 17215: Analytical methods for iron-based coagulants in water treatment.
- Directive (EU) 2020/2184: Requirements for the quality of water intended for human consumption.
- Regulation (EC) No 1272/2008 (CLP): Criteria for classification, labelling, and packaging of substances.
- Good laboratory and industrial practices: For sampling, testing, and health and safety.
Practical Value
Implementing this standard helps:
- Assure water safety and regulatory compliance: Control impurity levels and verify that treated water meets health guidelines.
- Standardize water treatment procedures: Promote consistency and reliability in municipal and industrial water treatment.
- Enhance operational safety: Provide clear instructions for safe handling, storage, and emergency response, reducing risk for staff and the environment.
- Support procurement and quality assurance: Clear requirements on product quality aid in effective supplier evaluation and contract specification.
By following kSIST FprEN 890:2026, stakeholders ensure the effective, safe, and compliant use of iron (III) sulfate solution in water treatment, safeguarding human health and supporting sustainable water management practices.
Relations
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 04-Dec-2024
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Frequently Asked Questions
kSIST FprEN 890:2026 is a draft published by the Slovenian Institute for Standardization (SIST). Its full title is "Chemicals used for treatment of water intended for human consumption - Iron (III) sulfate solution". This standard covers: 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 specifies the rules relating to safe handling (Annex B) and describes the use of iron (III) sulfate solution (Annex A).
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 specifies the rules relating to safe handling (Annex B) and describes the use of iron (III) sulfate solution (Annex A).
kSIST FprEN 890:2026 is classified under the following ICS (International Classification for Standards) categories: 13.060.20 - Drinking water; 71.100.80 - Chemicals for purification of water. The ICS classification helps identify the subject area and facilitates finding related standards.
kSIST FprEN 890:2026 has the following relationships with other standards: It is inter standard links to SIST EN 17882:2024, SIST EN ISO 22753:2023, SIST EN 18057:2025, SIST EN ISO 11781:2025, SIST EN ISO 17174:2024, SIST EN 17881:2024, SIST EN ISO 20813:2023, SIST EN 18033:2025, SIST EN 890:2023. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
kSIST FprEN 890:2026 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
SLOVENSKI STANDARD
oSIST prEN 890:2025
01-september-2025
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: prEN 890
ICS:
13.060.20 Pitna voda Drinking water
71.100.80 Kemikalije za čiščenje vode Chemicals for purification of
water
oSIST prEN 890:2025 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
oSIST prEN 890:2025
oSIST prEN 890:2025
DRAFT
EUROPEAN STANDARD
prEN 890
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2025
ICS 71.100.80 Will supersede EN 890:2023
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 draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 164.
If this draft becomes a European Standard, 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.
This draft European Standard was established by CEN 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.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 890:2025 E
worldwide for CEN national Members.
oSIST prEN 890:2025
prEN 890:2025 (E)
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
oSIST prEN 890:2025
prEN 890:2025 (E)
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 . 14
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
oSIST prEN 890:2025
prEN 890:2025 (E)
European foreword
This document (prEN 890:2025) has been prepared by Technical Committee CEN/TC 164 “Water
supply”, the secretariat of which is held by AFNOR.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 890:2023.
prEN 890:2025 includes the following significant technical changes with respect to EN 890:2023:
— update of the information related to limit values in Table 2 and Annex A.
oSIST prEN 890:2025
prEN 890:2025 (E)
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.
oSIST prEN 890:2025
prEN 890:2025 (E)
1 Scope
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 (Annex B)
...