EN 901:2007
(Main)Chemicals used for treatment of water intended for human consumption - Sodium hypochlorite
Chemicals used for treatment of water intended for human consumption - Sodium hypochlorite
This European Standard is applicable to sodium hypochlorite used for treatment of water intended for human consumption. It describes the characteristics of sodium hypochlorite and specifies the requirements and the corresponding test methods for sodium hypochlorite. It gives information on its use in water treatment. It also determines the rules relating to safe handling and use of sodium hypochlorite (see Annex B).
NOTE While this standard is not applicable to sodium hypochlorite generated in-situ (see bibliographic reference [6]) the limits for impurities and chemical parameters apply.
Produkte zur Aufbereitung von Wasser für den menschlichen Gebrauch - Natriumhypochlorit
Diese Europäische Norm gilt für Natriumhypochlorit zur Aufbereitung von Wasser für den menschlichen
Gebrauch. Sie beschreibt die Eigenschaften von Natriumhypochlorit und legt die Anforderungen sowie die
entsprechenden Prüfverfahren für Natriumhypochlorit fest. Sie gibt Informationen für die Anwendung von
Natriumhypochlorit in der Wasseraufbereitung. Sie legt darüber hinaus Regeln für die sichere Handhabung
und Benutzung von Natriumhypochlorit fest (siehe Anhang B).
Produits chimiques utilisés pour le traitement de l'eau destinée à la consommation humaine - Hypochlorite de sodium
Kemikalije, ki se uporabljajo za pripravo pitne vode - Natrijev hipoklorit
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-julij-2007
1DGRPHãþD
SIST EN 901:2000
Kemikalije, ki se uporabljajo za pripravo pitne vode - Natrijev hipoklorit
Chemicals used for treatment of water intended for human consumption - Sodium
hypochlorite
Produkte zur Aufbereitung von Wasser für den menschlichen Gebrauch -
Natriumhypochlorit
Produits chimiques utilisés pour le traitement de l'eau destinée a la consommation
humaine - Hypochlorite de sodium
Ta slovenski standard je istoveten z: EN 901:2007
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 901
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2007
ICS 71.100.80 Supersedes EN 901:1999
English Version
Chemicals used for treatment of water intended for human
consumption - Sodium hypochlorite
Produits chimiques utilisés pour le traitement de l'eau Produkte zur Aufbereitung von Wasser für den
destinée à la consommation humaine - Hypochlorite de menschlichen Gebrauch - Natriumhypochlorit
sodium
This European Standard was approved by CEN on 10 February 2007.
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 CEN Management Centre 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 CEN Management Centre has the same status as the
official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, 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
© 2007 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 901:2007: E
worldwide for CEN national Members.
Contents Page
Foreword.4
Introduction .5
1 Scope .6
2 Normative references .6
3 Description .6
3.1 Identification.6
3.1.1 Chemical name.6
3.1.2 Synonym or common names.6
3.1.3 Relative molecular mass.6
3.1.4 Empirical formula.6
3.1.5 Chemical formula.6
3.1.6 CAS Registry Number .7
3.1.7 EINECS reference .7
3.2 Commercial form .7
3.3 Physical properties.7
3.3.1 Appearance and odour.7
3.3.2 Density .7
3.3.3 Solubility in water .7
3.3.4 Vapour pressure .7
3.3.5 Boiling point at 100 kPa .7
3.3.6 Crystallization and freezing point .7
3.3.7 Specific heat.7
3.3.8 Viscosity (dynamic) .7
3.3.9 Critical temperature.8
3.3.10 Critical pressure.8
3.3.11 Physical hardness .8
3.4 Chemical properties .8
4 Purity criteria.8
4.1 General.8
4.2 Composition of commercial product.8
4.3 Impurities and main by-products.8
4.4 Chemical parameters .9
5 Test methods.9
5.1 Sampling.9
5.2 Analysis .9
5.2.1 Determination of available chlorine content (main product) .9
5.2.2 Impurities.12
5.2.3 Chemical parameters .18
6 Labelling - Transportation - Storage .20
6.1 Means of delivery .20
6.2 Risk and safety labelling according to the EU Directives .21
6.3 Transportation regulations and labelling.22
6.4 Marking.22
6.5 Storage .22
6.5.1 General .22
6.5.2 Long term stability .22
6.5.3 Storage incompatibilities.22
Annex A (informative) General information on sodium hypochlorite.23
A.1 Origin .23
A.2 Use .23
Annex B (normative) General rules relating to safety .25
B.1 Rules for safe handling and use .25
B.2 Emergency procedures.25
Annex C (normative) Determination of arsenic, antimony and selenium (atomic absorption
spectrometry hydride technique) .26
C.1 General principle .26
C.2 Interferences .26
C.3 Reagents.26
C.4 Apparatus.28
C.5 Procedure.30
C.6 Calculation .31
Annex D (normative) Determination of bromate ion content in sodium hypochlorite by liquid
chromatography of ions and UV detection.32
D.1 General .32
D.2 Interferences .32
D.3 Principle.32
D.4 Reagents.32
D.5 Apparatus.34
D.6 Procedure.34
Annex E (informative) Results of inter-laboratory tests on sodium bromate determination in
sodium hypochlorite commercial solutions.37
Annex F (informative) Environmental, health and safety precautions within chemical laboratories.38
Bibliography.39
Foreword
This document (EN 901:2007) 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 September 2007, and conflicting national standards shall be
withdrawn at the latest by September 2007.
This document supersedes EN 901:1999.
Significant technical differences between this edition and EN 901:1999 are as follows:
a) deletion of the reference to EU Directive 80/778/EEC of 15 July 1980 in order to take account of the latest
Directive in force (see [1]);
b) addition of the limit of the impurity sodium bromate as defined in the EU Directive 98/83/EC and the
method of determination.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech
Republic, Denmark, Estonia, F
...
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