EN 885:2004

SLOVENSKI STANDARD
01-marec-2005
1DGRPHãþD
SIST EN 885:2002
Kemikalije, ki se uporabljajo za pripravo pitne vode – Polialuminijev klorid
hidroksid silikat
Chemicals used for treatment of water intended for human consumption - Polyaluminium
chloride hydroxide silicate
Produkte zur Aufbereitung von Wasser für den menschlichen Gebrauch -
Polyaluminiumhydroxidchloridsilikat
Produits chimiques utilisés pour le traitement de l'eau destinée a la consommation
humaine - Polyhydroxychlorosilicate d'aluminium
Ta slovenski standard je istoveten z: EN 885:2004
ICS:
13.060.20 Pitna voda Drinking water
71.100.80 .HPLNDOLMH]DþLãþHQMHYRGH Chemicals for purification of
water
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 885
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2004
ICS 71.100.80 Supersedes EN 885:2001
English version
Chemicals used for treatment of water intended for human
consumption - Polyaluminium chloride hydroxide silicate
Produits chimiques utilisés pour le traitement de l'eau Produkte zur Aufbereitung von Wasser für den
destinée à la consommation humaine - Menschlichen Gebrauch -
Polyhydroxychlorosilicate d'aluminium Polyaluminiumhydroxidchloridsilikat
This European Standard was approved by CEN on 30 September 2004.

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 Central Secretariat 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 Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2004 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 885:2004: E
worldwide for CEN national Members.

Contents
Page
Foreword.3
Introduction .4
1 Scope .5
2 Normative references .5
3 Description .5
4 Purity criteria.8
5 Test methods.9
6 Labelling - Transportation - Storage.10
Annex A (informative) General information on polyaluminium chloride hydroxide silicate .12
Annex B (normative) General rules relating to safety.15
Bibliography .16
Foreword
This document (EN 885:2004) 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 May 2005, and conflicting national standards shall be withdrawn at the latest by
May 2005.
This document supersedes EN 885:2001.
Significant technical differences between this edition and EN 885:2001 are as follows:
a) Replacement of the reference to EU Directive 80/778 of July, 15 1980 with the latest Directive in force
(see[1]);
b) expansion of annex A by addition of A.2 "quality of commercial product".
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark,
Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and 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 polyaluminium chloride hydroxide silicate used for treatment of water intended for
human consumption. It describes the characteristics of polyaluminium chloride hydroxide silicate and specifies the
requirements for polyaluminium chloride hydroxide silicate 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 and use of
polyaluminium chloride hydroxide silicate (see annex B).
2 Normative references
The following referenced documents are indispensable for the application 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 1302, Chemicals used for treatment of water intended for human consumption — Aluminium based coagulants
— Analytical methods.
ISO 3165, Sampling of chemical products for industrial use — Safety in sampling.
ISO 6206, Chemical products for industrial use — Sampling — Vocabulary.
3 Description
3.1 Identification
3.1.1 Chemical name
Polyaluminium chloride hydroxide silicate.
3.1.2 Synonym or common name
Polyaluminium chloride silicate.
3.1.3 Relative molecular mass
Variable (see 3.1.4).
3.1.4 Empirical formula
Polyaluminium chloride hydroxide silicate is a synthetically manufactured polymerized basified aluminium salt
containing silicate. The structure of the product is polymeric.
Al(Na) (OH) (SiOx) Cl with a + b + 2c (x – 2) = 3 + d
d a c b
and
a = 1,05 to 2,4
b = 0,5 to 3
c = 0,01 to 0,3
d = 0,005 to 2
x ≥ 2
3.1.5 Chemical formula
Variable (see 3.1.4).
1)
3.1.6 CAS Registry Number
Aluminium chloride hydroxide silicate: 94894-80-1.
2)
3.1.7 EINECS reference
The following is a list of EINECS reference numbers for products or their starting materials.
Aluminium hydroxide chloride: 215-477-2.
Aluminosilicate: 215-475-1.
Sodium chloride: 231-598-3.
3.2 Commercial form
The product is available as a liquid.
3.3 Physical properties
3.3.1 Appearance
Polyaluminium chloride hydroxide silicate is a colourless to yellow, clear liquid.
3.3.2 Density
The density depends on the particular composition, especially the aluminium ion content, expressed as a mass
fraction of aluminium (Al) in %.
Typical values are 1,20 g/ml to 1,25 g/ml for 5,3 % Al.
3.3.3 Solubility in water
Polyaluminium chloride hydroxide silicate is fully miscible with water.
NOTE Depending on the particular product, dilute solutions can hydrolyse and form a precipitate.
3.3.4 Vapour pressure at 20 °C
Not known.
3)
3.3.5 Boiling point at 100 kPa
100 °C.
1) Chemical Abstracts Service Registry Number.
2) European Inventory of Existing Commercial Chemical Substances.
3) 100 kPa = 1 bar.
3.3.6 Crystallization point
Typical value is - 10 °C for  5,3 % Al.
3.3.7 Specific heat
Not known.
3.3.8 Viscosity (dynamic)
Typical value is 15 mPa.s for 5,3 %Al at 20 °C.
3.3.9 Critical temperature
Not applicable.
3.3.10 Critical pressure
Not applicable.
3.3.11 Physical hardness
Not applicable.
3.4 Chemical properties
Polyaluminium chloride hydroxide silicate is an acidic liquid which hydrolyses and forms a precipitate of aluminium
hydroxide when diluted beyond a particular concentration.
NOTE Since aluminium compounds are amphoteric in nature, the solubility of aluminium depends on the pH value and the
product should be used within an appropriate pH range.
4 Purity criteria
4.1 General
This document specifies the minimum purity requirements for polyaluminium chloride hydroxide silicate used for the
treatment of water intended for human consumption. Limits are given for impurities commonly present in the
product. Depending on the raw material and the manufacturing process other impurities may be present and, if so,
this shall be notified to the user and when necessary to relevant authorities.
NOTE Users of the product should check the national regulations in order to clarify whether it is of appropriate purity for
treatment of water intended for human consumption, taking into account raw water quality, required dosage, contents of other
impurities and additives used in the product not stated in this document.
Limits have been given for impurities and chemical parameters where these are likely to be present in significant
quantities from the current production process and raw materials. If in the production process or raw materials lead
to significant quantities of impurities, by-products or additives being present, this shall be notified to the user.
4.2 Composition of commercial product
The concentration of active matter (aluminium ion content) in the commercial product expressed as grams per
kilogram of product shall be not less than 50 g/kg.
The content of aluminium shall be within ± 3 % of the manufacturer's declared value.
The relative basicity expressed as the mole ratio OH/3Al shall be greater than 0,35.
4.3 Impurities and main by-products
The content of insoluble matters shall not exceed 25 g/kg of Al.
4.4 Chemical parameters
The product shall conform to the requirements specified i
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