prEN 15077
(Main)Chemicals used for treatment of swimming pool water - Sodium hypochlorite
Chemicals used for treatment of swimming pool water - Sodium hypochlorite
This document is applicable to sodium hypochlorite used directly or for the production of formulations for treating swimming pool water. 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 for treating swimming pool water.
Produkte zur Aufbereitung von Schwimm- und Badebeckenwasser - Natriumhypochlorit
Dieses Dokument gilt für Natriumhypochlorit, das direkt zur Aufbereitung von Schwimm- und Badebeckenwasser oder zum Herstellen von Zubereitungen für diesen Zweck verwendet wird. Es beschreibt die Eigenschaften von Natriumhypochlorit und legt die Anforderungen sowie die entsprechenden Prüfverfahren für Natriumhypochlorit fest. Es enthält Angaben zu seiner Anwendung in der Aufbereitung von Schwimm- und Badebeckenwasser.
Produits chimiques utilisés pour le traitement de l’eau des piscines - Hypochlorite de sodium
Le présent document est applicable à l’hypochlorite de sodium utilisé directement ou pour préparer des formulations pour traiter l’eau des piscines. Il décrit les caractéristiques de l’hypochlorite de sodium et spécifie les exigences et les méthodes d’essais correspondantes applicables à l’hypochlorite de sodium. Il donne des informations pour son utilisation dans le traitement de l’eau des piscines.
Kemikalije, ki se uporabljajo za pripravo bazenske vode - Natrijev hipoklorit
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2020
Kemikalije, ki se uporabljajo za pripravo bazenske vode - Natrijev hipoklorit
Chemicals used for treatment of swimming pool water - Sodium hypochlorite
Produkte zur Aufbereitung von Schwimm- und Badebeckenwasser - Natriumhypochlorit
Produits chimiques utilisés pour le traitement de l’eau des piscines - Hypochlorite de
sodium
Ta slovenski standard je istoveten z: prEN 15077
ICS:
13.060.25 Voda za industrijsko uporabo Water for industrial use
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
June 2020
ICS 71.100.80 Will supersede EN 15077:2013
English Version
Chemicals used for treatment of swimming pool water -
Sodium hypochlorite
Produits chimiques utilisés pour le traitement de l'eau Produkte zur Aufbereitung von Schwimm- und
des piscines - Hypochlorite de sodium Badebeckenwasser - Natriumhypochlorit
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 15077:2020 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Description . 5
4.1 Identification . 5
4.2 Commercial form . 6
4.3 Physical properties . 6
4.4 Chemical properties . 6
5 Purity criteria . 7
5.1 General. 7
5.2 Composition of commercial product . 7
5.3 Impurities and main by-products . 7
5.4 Chemical parameters. 8
6 Test methods . 8
7 Labelling - Transportation - Storage . 8
7.1 Means of delivery . 8
7.2 Labelling according to the EU legislation . 9
7.3 Transportation regulations and labelling . 10
7.4 Marking . 10
7.5 Storage . 10
Annex A (informative) General information on sodium hypochlorite . 11
A.1 Origin . 11
A.2 Use . 11
Annex B (normative) General rules relating to safety . 12
B.1 Rules for safe handling and use . 12
B.2 Emergency procedures . 12
Bibliography . 13
European foreword
This document (prEN 15077:2020) 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 15077:2013.
In comparison with the previous edition, the following technical modifications have been made:
a) modification of 7.3 on transportation regulations and labelling, adding the sentence “The user shall
be aware of the incompatibilities between transported products.”;
b) modification of 7.4 on marking. The requirements of marking are also applied to the accompanying
documents.
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 1 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. Use of the product covered by this document is subject to regulation or
control by National Authorities.
NOTE 2 This product is a biocide and needs to comply with the relevant legislation in force. In the European
Union, at the time of publication, this legislation is Regulation (EU) No 528 /2012 [1].
1 Scope
This document is applicable to sodium hypochlorite used directly or for the production of formulations
for treating swimming pool water. 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 for treating swimming pool water.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 901, Chemicals used for treatment of water intended for human consumption — Sodium hypochlorite
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 https://www.iso.org/obp/ui
• IEC Electropedia: available at http://www.electropedia.org/
4 Description
4.1 Identification
4.1.1 Chemical name
Sodium hypochlorite.
4.1.2 Synonym or commons name
Liquid bleach, soda bleach, bleach lye.
4.1.3 Relative molecular mass
74,44.
4.1.4 Empirical formula
NaClO.
4.1.5 Chemical formula
NaClO.
4.1.6 CAS-Registry Number
7681-52-9.
4.1.7 EINECS reference
231-668-3.
Chemical Abstracts Service Registry Number.
European Inventory of Existing Commercial Chemical Substances.
4.2 Commercial form
The product is supplied as an aqueous solution with an available (active) chlorine concentration up to a
mass fraction of 18 %. For safe handling and use and emergency procedures of sodium hypochlorite,
refer to Annex B.
4.3 Physical properties
4.3.1 Appearance and odour
The product is a clear yellowish-green solution with a faint chlorinous odour.
4.3.2 Density
The density of the product varies between 1,13 g/ml and 1,30 g/ml at 20 °C.
4.3.3 Solubility in water
The product is capable of being mixed with water in any proportion.
4.3.4 Vapour pressure
Approximately 2,5 kPa at 20 °C.
4.3.5 Boiling point at 100 kPa
Not applicable.
NOTE 100 kPa = 1 bar.
4.3.6 Crystallization and freezing point
At approximately -10 °C, crystallization of NaOCl.6H O starts.
Freezing of the concentrated product takes place between -20 °C and -30 °C.
4.3.7 Specific heat
The specific heat is 3,48 kJ/(kg.K) for a solution with an available active chlorine concentration of mass
fraction between 14 % and 15 %.
4.3.8 Viscosity (dynamic)
2,6 mPa s at 20 °C.
4.3.9 Critical temperature
Not applicable.
4.3.10 Critical pressure
Not applicable.
4.3.11 Physical hardness
Not applicable.
4.4 Chemical properties
The product is an alkaline solution with a pH value greater than 11 at 20 °C.
It reacts with acids and acidic salts to form chlorine.
-
Vigorous reactions occur with reducing chemicals. It is a strong oxidant (E° for (ClO ) = 0,89 V).
Red
- + - -
ClO + 2H +2e → Cl + H O
For additional information on sodium hypochlorite, see Annex A.
5 Purity criteria
5.1 General
This document specifies the minimum purity requirements for sodium hypochlorite used for treating
water for swimming pools. Limits are given for impurities commonly present in the product. Depending
on the raw material and the manufacturing process, other impurities can be present and, if so, the user,
and when necessary the relevant authorities, shall be notified.
Users of the product should check the national regulations to clarify whether it is of appropriate purity
for treating water for swimming pools, taking into account raw water quality, required dosage, contents
of other impurities and additives used in the product that are not stated in this product standard.
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 the production process
or raw materials lead to the presence of significant amounts of impurities, by-products or additives, the
user shall be notified.
5.2 Composition of commercial product
Sodium hypochlorite is available only in solutions with concentrations up to 18 % active chlorine at the
time of delivery by the producer. Common concentrated products contain a minimum of 12 % active
chlorine. Diluted solutions are also available.
The concentration of sodium hypochlorite shall be equal to or greater than the value specified by the
manufacturer.
5.3 Impurities and main by-products
The product contains sodium chloride (NaCl) in equimolar amounts at minimum, and a small portion of
sodium hydroxide (NaOH), which keeps the product alkaline. Therefore, a small amount of sodium
carbonate (Na CO ) can also be present.
2 3
The sodi
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