Chemicals used for treatment of water intended for human consumption - Polyaluminium chloride hydroxide silicate

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).

Produkte zur Aufbereitung von Wasser für den menschlichen Gebrauch - Polyaluminiumhydroxidchloridsilikat

Diese Europäische Norm beschreibt die Eigenschaften von Polyaluminiumhydroxidchloridsilikat und legt die Anforderungen sowie die entsprechenden Prüfverfahren für Polyaluminiumhydroxidchloridsilikat zur Aufbereitung von Wasser für den menschlichen Gebrauch fest. Sie gibt Informationen für die Anwendung von Polyaluminiumhydroxidchloridsilikat in der Wasseraufbereitung.
ANMERKUNG   Eine Übereinstimmung mit dieser Norm bedeutet keine gleichzeitige Annahme oder Zulassung des Produktes in einem der Mitgliedsländer der EU oder EFTA. Die Anwendung des in dieser Europäischen Norm beschriebenen Produktes unterliegt den jeweiligen Regelungen der nationalen autorisierten Stellen.

Produits chimiques utilisés pour le traitement de l'eau destinée a la consommation humaine - Polyhydroxychlorosilicate d'aluminium

La présente Norme européenne décrit les caractéristiques et spécifie les exigences du polyhydroxychlorosilicate d'aluminium utilisé pour le traitement de l'eau destinée a la consommation humaine. Elle fait référence aux méthodes d'analyse correspondantes et donne également des informations sur l'emploi de ce produit pour le traitement de l'eau.
NOTE   La conformité a la norme ne confere ni n'implique l'acceptation ou l'approbation du produit dans l'un quelconque des Etats membres de L'UE ou de l'AELE. L'utilisation du produit relevant de la présente Norme européenne fait l'objet d'une réglementation ou de contrôles de la part des autorités nationales.

Kemikalije, ki se uporabljajo za pripravo pitne vode – Polialuminijev klorid hidroksid silikat

General Information

Status
Published
Publication Date
28-Feb-2005
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
01-Mar-2005
Due Date
01-Mar-2005
Completion Date
01-Mar-2005

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SLOVENSKI STANDARD
SIST EN 885:2005
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
SIST EN 885:2005 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 885:2005
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SIST EN 885:2005
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.
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SIST EN 885:2005
EN 885:2004 (E)
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

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SIST EN 885:2005
EN 885:2004 (E)
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.

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SIST EN 885:2005
EN 885:2004 (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.
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SIST EN 885:2005
EN 885:2004 (E)
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
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SIST EN 885:2005
EN 885:2004 (E)
3.1.5 Chemical formula
Variable (see 3.1.4).
3.1.6 CAS Registry Number
Aluminium chloride hydroxide silicate: 94894-80-1.
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.
3.3.5 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.
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SIST EN 885:2005
EN 885:2004 (E)
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.
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SIST EN 885:2005
EN 885:2004 (E)
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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