oSIST prEN 878:2025

SLOVENSKI STANDARD
01-oktober-2025
Kemikalije, ki se uporabljajo za pripravo pitne vode - Aluminijev sulfat
Chemicals used for treatment of water intended for human consumption - Aluminium
sulfate
Produkte zur Aufbereitung von Wasser für den menschlichen Gebrauch -
Aluminiumsulfat
Produits chimiques utilisés pour le traitement de l'eau destinée à la consommation
humaine - Sulfate d'aluminium
Ta slovenski standard je istoveten z: prEN 878
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.

DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2025
ICS 71.100.80 Will supersede EN 878:2016
English Version
Chemicals used for treatment of water intended for human
consumption - Aluminium 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 - Aluminiumsulfat
d'aluminium
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 878:2025 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 . 7
)
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 . 8
4.3.4 Vapour pressure at 20 °C . 8
)
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 . 9
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 .10
5.3 Impurities and main by-products .10
5.4 Chemical parameters .10
6 Test methods .11
6.1 Sampling .11
6.2 Analyses .11
7 Labelling - Transportation - Storage .11
7.1 Means of delivery .11
)
7.2 Labelling in accordance with the EU legislation .11
7.3 Transportation regulations and labelling .12
7.4 Marking .13
7.5 Storage .13
7.5.1 General .13
7.5.2 Long term stability .13
7.5.3 Storage incompatibilities . 13
Annex A (informative) General information on aluminium sulfate . 14
A.1 Origin . 14
A.1.1 Raw materials . 14
A.1.2 Manufacturing process . 14
A.2 Quality of commercial product . 14
A.3 Use . 16
A.3.1 Function . 16
A.3.2 Form in which it is used . 16
A.3.3 Treatment dose . 16
A.3.4 Means of application. 16
A.3.5 Secondary effects . 16
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

European foreword
This document (prEN 878:2025) 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 878:2016.
Significant technical differences between this edition prEN 878:2025 and EN 878:2016 are as follows:
a) update of information related to Drinking Water Directive.

Introduction
In respect of potential adverse effects on the quality of water intended for human consumption, caused by the
product covered by this document:
1) 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;
2) 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 aluminium sulfate used for treatment of water intended for human
consumption. It describes the characteristics of aluminium sulfate and specifies the requirements for
aluminium sulfate and gives reference to the 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 sulfate (see
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
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 sulfate.
4.1.2 Synonym or common names
Aluminium sulfate, cake alum, alum.
NOTE In English the generic term “alum” is imprecise and is deprecated and in German the term “Alaun” is
misleading, as “alumn”/”Alaun” is a kalium aluminium sulfate salt.
4.1.3 Relative molecular mass
342,14 for Al (SO ) .
...