kSIST FprEN 887:2026

• Abstract:

  This document is applicable to aluminium iron (III) sulfate used for treatment of water intended for human consumption. It describes the characteristics of aluminium iron (III) sulfate and specifies the requirements for aluminium iron (III) sulfate and refers to the corresponding analytical methods. It gives information on its use in water treatment. It also specifies the rules relating to safe handling (Annex B) and describes the use of aluminium iron (III) sulfate (Annex A).

• Status: Not Published
• Public Enquiry End Date: 15-Oct-2025
• 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: 5020 - Formal vote (FV) (Adopted Project)
• Start Date: 28-Aug-2026
• Due Date: 16-Oct-2026
• Completion Date: 02-Sep-2026
• Ref Project: FprEN 887 - Chemicals used for treatment of water intended for human consumption - Aluminium iron (III) sulfate

• Revised: SIST EN 887:2016 - Chemicals used for treatment of water intended for human consumption - Aluminium iron (III) sulfate
• Effective Date: 19-Jan-2023

Overview

kSIST FprEN 887:2026 specifies requirements for aluminium iron (III) sulfate used in the treatment of water intended for human consumption. Created by SIST in alignment with European standards, this document defines the physical and chemical characteristics, purity criteria, analytical methods, and safe handling requirements for aluminium iron (III) sulfate.

This standard serves as an essential reference for water treatment plants, chemical suppliers, and regulatory authorities ensuring that water treatment chemicals meet quality and safety requirements. It builds on and supersedes prior editions by reflecting up-to-date regulatory guidance, such as the EU Drinking Water Directive.

Key Topics

• Product Identification and Forms

  • Describes aluminium iron (III) sulfate, also known as aluminium and iron sulfate, used as a coagulant in water treatment.
  • Available in solid hydrated forms (slabs, granules, kibbled, ground) and as aqueous solutions. The chemical composition, solubility, and appearance are detailed.

• Purity and Composition

  • Sets minimum purity levels and maximum permissible limits on impurities such as arsenic, cadmium, chromium, mercury, nickel, lead, antimony, and selenium.
  • Outlines composition ranges for aluminium and iron content depending on the product form (solid or solution).

• Test Methods

  • Refers to EU-standardized analytical methodologies for quality control of both aluminium and iron content and verification of impurity levels.

• Labelling, Transportation, and Storage

  • Specifies requirements for packaging, labelling, and hazards according to EU and international transport regulations. Advises on safe materials for containers and long-term product stability.
  • Details classification, hazard pictograms, and statements to ensure compliance with Regulation (EC) No 1272/2008 (CLP) and related transport protocols.

• Safe Handling and Emergency Procedures

  • Provides guidance on safe handling practices, protective equipment, emergency measures in case of spillage, first aid, and fire response.
  • Advises on storage incompatibilities to prevent hazardous reactions.

Applications

Aluminium iron (III) sulfate is primarily used as a coagulant in municipal and industrial water treatment processes:

• Drinking Water Treatment

  • Applied to raw water to promote coagulation and removal of suspended particles, reducing turbidity and improving water clarity.
  • Helps comply with the EU Drinking Water Directive by facilitating the removal of contaminants and trace metals.
  • Typical dosing depends on water quality, usually ranging from 1 mg/l to 15 mg/l (aluminium and iron combined).

• Industrial Water Purification

  • Employed in production facilities to treat process water to standards safe for human contact or reuse.

• Public Health and Regulatory Compliance

  • Enables water utilities to meet stringent public health requirements for water quality by ensuring that treatment chemicals introduce minimal additional impurities.

• Safe Chemical Management

  • The standard outlines best practices for storage and transport, hazard communication, and spill response, supporting workplace safety and regulatory compliance.

Related Standards

Implementation and verification of kSIST FprEN 887:2026 may require reference to related standards, including:

• EN 1302: Chemicals used for treatment of water intended for human consumption - Aluminium-based coagulants - Analytical methods.
• EN 17215: Chemicals used for treatment of water intended for human consumption - Iron-based coagulants - Analytical methods.
• Directive (EU) 2020/2184: On the quality of water intended for human consumption.
• Regulation (EC) No 1272/2008: Classification, labelling, and packaging of substances and mixtures (CLP).

These documents provide further guidance on sampling, analytical techniques, legal limits, and safety protocols, ensuring a robust framework for water treatment chemical management and safe water supply.

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Keywords: aluminium iron (III) sulfate standard, water treatment chemicals, water intended for human consumption, SIST standards, drinking water quality, coagulant safety, chemical purity, EU water treatment regulations

SLOVENSKI STANDARD
oSIST prEN 887:2025
01-oktober-2025
Kemikalije, ki se uporabljajo za pripravo pitne vode - Aluminijev železov (III) sulfat
Chemicals used for treatment of water intended for human consumption - Aluminium iron
(III) sulfate
Produkte zur Aufbereitung von Wasser für den menschlichen Gebrauch - Aluminium-
Eisen(III)-sulfat
Produits chimiques utilisés pour le traitement de l'eau destinée à la consommation
humaine - Sulfate d'aluminium et de fer (III)
Ta slovenski standard je istoveten z: prEN 887
ICS:
13.060.20 Pitna voda Drinking water
71.100.80 Kemikalije za čiščenje vode Chemicals for purification of
water
oSIST prEN 887:2025 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN 887:2025
oSIST prEN 887:2025
DRAFT
EUROPEAN STANDARD
prEN 887
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2025
ICS 71.100.80 Will supersede EN 887:2016
English Version
Chemicals used for treatment of water intended for human
consumption - Aluminium iron (III) 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 - Aluminium-Eisen(III)-sulfat
d'aluminium et de fer (III)
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 887:2025 E
worldwide for CEN national Members.

oSIST prEN 887:2025
prEN 887:2025 (E)
Contents Page
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 name . 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 . 7
)
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 at 20 °C . 7
)
4.3.5 Boiling point at 100 kPa . 8
4.3.6 Crystallization 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 . 8
4.3.11 Physical hardness . 8
4.4 Chemical properties . 8
5 Purity criteria . 9
5.1 General . 9
5.2 Composition of commercial product . 9
5.3 Impurities and main by-products . 9
5.4 Chemical parameters . 9
6 Test methods . 10
6.1 Sampling . 10
6.2 Analyses . 10
7 Labelling - Transportation - Storage . 10
7.1 Means of delivery . 10
)
7.2 Labelling according to the EU legislation . 10
7.3 Transportation regulations and labelling . 11
7.4 Marking . 12
7.5 Storage . 12
7.5.1 General . 12
7.5.2 Long term stability . 12
7.5.3 Storage incompatibilities . 12
oSIST prEN 887:2025
prEN 887:2025 (E)
Annex A (informative)  General information on aluminium iron (III) 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 . 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

oSIST prEN 887:2025
prEN 887:2025 (E)
European foreword
This document (prEN 887:2025) 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 887:2016.
Significant technical differences between this edition and EN 887:2016 are as follows:
a) update of information related to Drinking Water Directive.

oSIST prEN 887:2025
prEN 887:2025 (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 887:2025
prEN 887:2025 (E)
1 Scope
This document is applicable to aluminium iron (III) sulfate used for treatment of water intended for human
consumption. It describes the characteristics of aluminium iron (III) sulfate and specifies the requirements for
aluminium iron (III) sulfate and refers to the corresponding analytical methods. It gives information on its use
in water treatment. It also determines the rules relating to safe handling (Annex B) and use of aluminium iron
(III) sulfate (Annex A).
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
EN 1302, Chemicals used for treatment of water intended for human consumption — Aluminium-based
coagulants — Analytical methods
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 Description
4.1 Identification
4.1.1 Chemical name
Aluminium iron (III) sulfate.
4.1.2 Synonym or common name
Aluminium and iron sulfate.
4.1.3 Relative molecular mass
Variable (see 4.1.4).
4.1.4 Empirical formula
(Al Fe ) (SO ) where x is 0,70 to 0,95.
x 1-x 2 4 3
4.1.5 Chemical formula
xAl (SO ) ·(1 - x)Fe (SO ) ·nH O where n is variable and x varies from 0,70 to 0,95.
2 4 3 2 4 3 2
oSIST prEN 887:2025
prEN 887:2025 (E)
)
4.1.6 CAS Registry Number
The following is a list of CAS Registry Numbers for the components:
Al (SO ) :  10043-01-3;
2 4 3
Al (SO ) ·14H O:
...