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

kSIST FprEN 887:2026 is a SIST-published European standard for aluminium iron (III) sulfate used in the treatment of water intended for human consumption. It specifies the product description, purity requirements, test methods, labelling, transport, storage and safety information for suppliers, laboratories and water-treatment operators. In practice, it is a product specification for checking whether a commercial grade is suitable for drinking-water treatment.

What does kSIST FprEN 887:2026 specify?

kSIST FprEN 887:2026 applies to aluminium iron (III) sulfate for treatment of water intended for human consumption. It covers the product itself, the requirements it has to meet, the related analytical methods, and practical information on use and handling.

Annex	What it covers
Annex A	General information on aluminium iron (III) sulfate, including origin, manufacture, quality, and use in water treatment
Annex B	General rules relating to safety, including handling and emergency procedures

The main body is organized into scope, normative references, terms and definitions, description, purity criteria, test methods, and labelling - transportation - storage. That structure matters because it separates the product identity, the quality limits, how to check them, and how to move and store the chemical safely.

What are the key requirements of kSIST FprEN 887:2026?

kSIST FprEN 887:2026 is mainly a specification for product identity, purity and safe use. The most important points are below.

• Clause 4 - Description: The standard identifies the chemical as aluminium iron (III) sulfate and gives its common name, variable composition, commercial forms, and physical properties. This helps buyers and laboratories confirm they are dealing with the intended coagulant, not a different aluminum or iron salt.

• Clause 4.3 and 4.4 - Physical and chemical properties: The product is described as a yellow to brown solid or liquid, with properties that vary with composition. The document notes that dilute solutions hydrolyze and that pH affects solubility, which matters when choosing the dosing point and operating range.

• Clause 5 - Purity criteria: The standard sets minimum purity requirements for commercial product and limits for impurities and chemical parameters. It also says that other impurities or additives from the raw materials or process must be notified when relevant, so users can assess suitability against their own water-quality targets.

• Clause 5.2 - Composition of commercial product: The active matter content, expressed as aluminium and iron ion contents, has to stay within the manufacturer’s declared values. In practice, this is a check on product consistency from batch to batch.

• Clause 5.3 and 5.4 - Insoluble matter and chemical parameters: The document sets different limits by product type, including a tighter and a less strict product classification. This matters because the chosen type affects trace-metal contribution and the amount of residue that can reach the process.

• Clause 6 - Test methods: Sampling follows EN 1302, and analysis uses EN 1302 for aluminium together with EN 17215 for iron sulfate. This gives purchasers and laboratories a common test route for acceptance checking.

• Clause 7 - Labelling, transportation and storage: The document covers delivery forms, EU labelling, transport classification, marking, storage tank material and storage incompatibilities. For users, this is the practical guidance needed to receive the product, label it correctly, prevent contamination, and avoid reactions with incompatible materials.

• Annex A and Annex B: Annex A explains how the product is made, how it is used as a coagulant, typical dosing and secondary effects such as pH reduction and increased sulfate. Annex B gives first aid, spill and fire guidance, which is important for site procedures and safety data.

What terms does kSIST FprEN 887:2026 use?

• Aluminium iron (III) sulfate - The product covered by the standard, used as a coagulant for treating water intended for human consumption.
• Al + Fe - The active matter expression used in the document for the combined aluminium and iron ion content.
• Type 1, type 2, type 3 - The product grades used in the purity table, with different impurity limits and different impacts on treated water quality.
• CAS Registry Number - The chemical identifier used to identify the component substances listed in the description.
• EINECS reference - The European inventory number used for the listed component substances.
• Positive displacement metering pump - The dosing pump type usually used to apply the liquid product in water treatment.
• Drinking Water Directive - The EU drinking-water legislation referenced when comparing trace-metal contribution in Annex A.

Who uses kSIST FprEN 887:2026?

kSIST FprEN 887:2026 is used by water-treatment operators, drinking-water suppliers, product manufacturers, laboratories, and quality or procurement teams. They use it to select a suitable grade, check impurity compliance, set up sampling and analysis, define storage and transport conditions, and document product suitability for treatment processes.

What changed in kSIST FprEN 887:2026 from the previous edition?

kSIST FprEN 887:2026 supersedes EN 887:2016. The change stated in the document is an update of the information related to the Drinking Water Directive.

Which standards are used with kSIST FprEN 887:2026?

kSIST FprEN 887:2026 cites two normative references that support its test methods.

• EN 1302 - Provides the sampling methods and the aluminium analytical methods used for compliance testing.
• EN 17215 - Provides the iron-based coagulant analytical methods used alongside EN 1302.

What does the kSIST FprEN 887:2026 document contain?

kSIST FprEN 887:2026 contains identification data, physical and chemical property information, and purity tables for aluminium iron (III) sulfate. It also contains a viscosity table for a typical solution, a chemical-parameter table for impurity limits, and practical guidance on packaging, marking, transport and storage.

The annexes add application and safety material. Annex A gives origin, manufacture, use, dose range, application method and secondary effects, while Annex B gives first aid, spill response and fire guidance.

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:
...