Chemicals used for treatment of water intended for human consumption - Iron (III) chloride

This document is applicable to iron (III) chloride (a), iron (III) chloride hexahydrate (b), iron (III) chloride solution (c) used for treatment of water intended for human consumption. It describes the characteristics and specifies the requirements and the corresponding analytical methods for iron (III) chlorides (a), (b) and (c) and gives information for their use in water treatment.

Produkte zur Aufbereitung von Wasser für den menschlichen Gebrauch - Eisen(III)chlorid

Dieses Dokument gilt für Eisen(III)chlorid (a), Eisen(III)chloridhexahydrat (b) und Eisen(III)chloridlösung (c) zur Aufbereitung von Wasser für den menschlichen Gebrauch. Es beschreibt die Eigenschaften der Eisen(III)chloride (a), (b) und (c) und legt die Anforderungen sowie die entsprechenden Analysenverfahren für die Eisen(III)chloride (a), (b) und (c) fest. Es gibt Informationen über deren Anwendung in der Wasseraufbereitung.

Produits chimiques utilisés pour le traitement de l'eau destinée à la consommation humaine - Chlorure de fer (III)

Le présent document est applicable au chlorure de fer (III) (a), au chlorure de fer (III) hexahydraté (b), au chlorure de fer (III) liquide (c) utilisés pour le traitement de l'eau destinée à la consommation humaine. Il décrit les caractéristiques et spécifie les exigences et les méthodes d'analyse correspondantes pour les chlorures de fer (III) (a), (b) et (c) et donne les informations pour leur utilisation dans le traitement de l'eau.

Kemikalije, ki se uporabljajo za pripravo pitne vode - Železov (III) klorid

General Information

Status
Not Published
Public Enquiry End Date
19-May-2020
Current Stage
4020 - Public enquire (PE) (Adopted Project)
Start Date
09-Apr-2020
Due Date
27-Aug-2020
Completion Date
02-Jun-2020

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SLOVENSKI STANDARD
oSIST prEN 888:2020
01-maj-2020
Kemikalije, ki se uporabljajo za pripravo pitne vode - Železov (III) klorid

Chemicals used for treatment of water intended for human consumption - Iron (III)

chloride
Produkte zur Aufbereitung von Wasser für den menschlichen Gebrauch - Eisen
(III)chlorid

Produits chimiques utilisés pour le traitement de l'eau destinée à la consommation

humaine - Chlorure de fer (III)
Ta slovenski standard je istoveten z: prEN 888
ICS:
13.060.20 Pitna voda Drinking water
71.100.80 Kemikalije za čiščenje vode Chemicals for purification of
water
oSIST prEN 888:2020 en,fr,de

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

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oSIST prEN 888:2020
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oSIST prEN 888:2020
DRAFT
EUROPEAN STANDARD
prEN 888
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2020
ICS 71.100.80 Will supersede EN 888:2004
English Version
Chemicals used for treatment of water intended for human
consumption - Iron (III) chloride

Produits chimiques utilisés pour le traitement de l'eau Produkte zur Aufbereitung von Wasser für den

destinée à la consommation humaine - Chlorure de fer menschlichen Gebrauch - Eisen(III)chlorid

(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, Turkey 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

© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 888:2020 E

worldwide for CEN national Members.
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oSIST prEN 888:2020
prEN 888:2020 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

Introduction .................................................................................................................................................................... 4

1 Scope .................................................................................................................................................................... 5

2 Normative references .................................................................................................................................... 5

3 Description ........................................................................................................................................................ 5

3.1 Identification .................................................................................................................................................... 5

3.2 Commercial forms ........................................................................................................................................... 6

3.3 Physical properties ......................................................................................................................................... 6

3.4 Chemical properties ....................................................................................................................................... 8

4 Purity criteria ................................................................................................................................................... 8

4.1 General ................................................................................................................................................................ 8

4.2 Composition of commercial product ........................................................................................................ 8

4.3 The grade of the product .............................................................................................................................. 8

4.4 The type of the product ................................................................................................................................. 9

5 Test methods ................................................................................................................................................. 10

5.1 Sampling .......................................................................................................................................................... 10

5.2 Analyses ........................................................................................................................................................... 10

6 Labelling – Transportation – Storage .................................................................................................... 10

6.1 Means of delivery ......................................................................................................................................... 10

6.2 Risk and safety labelling according to the EU Directives .............................................................. 10

6.3 Transportation regulations and labelling ........................................................................................... 11

6.4 Marking ............................................................................................................................................................ 12

6.5 Storage ............................................................................................................................................................. 12

Annex A (informative) General information on iron (III) chloride ........................................................... 13

Annex B (normative) General rules relating to safety ................................................................................... 18

Bibliography ................................................................................................................................................................. 19

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oSIST prEN 888:2020
prEN 888:2020 (E)
European foreword

This document (prEN 888:2020) 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 888:2004.

In comparison with the previous edition, the following technical modifications have been made:

— removal of the analytical methods from this standard and referred to EN 17215 as analytical

method standard;

— harmonization of the table for elements (Table 3, section 5.4) for all iron product standards;

— update of the information of risk and safety labelling of the product to comply with the new

regulations (see 7.2 and [2]).
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oSIST prEN 888:2020
prEN 888:2020 (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 standard 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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oSIST prEN 888:2020
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1 Scope

This document is applicable to iron (III) chloride (a), iron (III) chloride hexahydrate (b), iron (III)

chloride solution (c) used for treatment of water intended for human consumption. It describes the

characteristics and specifies the requirements and the corresponding analytical methods for iron (III)

chlorides (a), (b) and (c) and gives information for their use in water treatment.

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 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 terminological databases for use in standardization at the following addresses:

• ISO Online browsing platform: available at http://www.iso.org/obp
• IEC Electropedia: available at https://www.electropedia.org/
4 Description
4.1 Identification
4.1.1 Chemical name
(a) iron (III) chloride anhydrous (FeCl ).
(b) iron (III) chloride hexahydrate (FeCl . 6 H O).
3 2
(c) iron (III) chloride solution.
4.1.2 Synonym or common names
(a) Ferric chloride, water free ferric chloride.
(b) Ferric chloride, hexahydrate.
(c) Ferric chloride, solution.
4.1.3 Relative molecular mass
(a) and (c) 162,21 for FeCl
(b) 270,31 for FeCl . 6 H O.
3 2
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oSIST prEN 888:2020
prEN 888:2020 (E)
4.1.4 Empirical formula
(a) and (c) FeCl .
(b) FeCl . 6 H O.
3 2
4.1.5 Chemical formula
(a) and (c) FeCl .
(b) FeCl . 6 H O.
3 2
4.1.6 CAS Registry Number
(a) and (c) 7705-08-0.
(b) 10025-77-1.
4.1.7 EINECS reference
231-729-4.
4.2 Commercial forms
Iron (III) chloride (a) is available as a crystalline powder.
Iron (III) chloride hexahydrate (b) is available as crystalline granules.
Liquid forms of iron (III) chloride (c) are available as solutions.
4.3 Physical properties
4.3.1 Appearance

Iron (III) chloride (a) is an hygroscopic, dark grey crystalline powder with a greenish sheen.

Iron (III) chloride hexahydrate (b) is an hygroscopic, yellow deliquescent crystalline granular material.

Liquid forms of iron (III) chloride (c) are dark brown solutions.
4.3.2 Density
The density of iron (III) chloride (a) is equal to 2,89 g/cm at 20 °C.

The density of iron (III) chloride hexahydrate (b) is equal to 1,8 g/cm at 20 °C.

The density of solutions of iron (III) chloride(c) is equal to 1,43 g/ml at 20 °C for a mass fraction of

40 % of FeCl .
The bulk density of the products (a) and (b) is about 1,0 kg/dm .
4.3.3 Solubility (in water)
The solubility at 20 °C for the products
(a) and (b) is approximately up to a mass fraction of 47 % of FeCl .
Chemical Abstracts Service Registry Number
European Inventory of Existing Commercial Chemical Substances
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oSIST prEN 888:2020
prEN 888:2020 (E)
The products (a) and (b) are soluble and (c) is dilutable (see A.3.2).
4.3.4 Vapour pressure
For the product (a) 0,1 kPa at 20 °C.
4.3.5 Boiling point at 100 kPa
For the product (a) decomposition occurs at 315 °C.
For the product (b) decomposition starts at 160 °C.
4.3.6 Melting point
For the product (a) 304 °C (point of sublimation).
For the product (b) 37 °C.

For the product (c) the melting and crystallization points depending on concentration are given in

Table 1.
Table 1 — Melting point
Solution concentration
Melting, crystallization
point
Mass fraction of FeCl
in %
34 −52
40 −12
45 +10
4.3.7 Specific heat
For the product (a) 600 kJ/kg.K.
For the product (b) not known.
For the product (c) not applicable.
4.3.8 Viscosity (dynamic)
For the products (a) and (b) it is not applicable.

For the product (c) the viscosity is about 10 mPa.s for a solution of a mass fraction of 40 % of FeCl at

20 °C.
4.3.9 Critical temperature
Not applicable.
4.3.10 Critical pressure
Not applicable.
100 kPa = 1 bar
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prEN 888
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