prEN 15074
(Main)Chemicals used for treatment of swimming pool water - Ozone
Chemicals used for treatment of swimming pool water - Ozone
This document is applicable to ozone used for treatment of water for swimming pools. It describes the composition of ozone. It gives information on its use in swimming pool water treatment. It also determines the rules relating to safe handling and use (see Annex B).
Produkte zur Aufbereitung von Schwimm- und Badebeckenwasser - Ozon
Dieses Dokument gilt für Ozon zur Aufbereitung von Schwimm- und Badebeckenwasser. Es beschreibt die Zusammensetzung von Ozon. Es enthält Angaben zu dessen Anwendung in der Aufbereitung von Schwimm- und Badebeckenwasser. Es legt darüber hinaus Regeln für die sichere Handhabung und Verwendung fest (siehe Anhang B).
Produits chimiques utilisés pour le traitement de l'eau des piscines - Ozone
Le présent document s’applique à l’ozone utilisé pour le traitement de l’eau des piscines. Il décrit la composition de l’ozone. Il donne des informations sur son emploi dans le traitement de l’eau des piscines. Il détermine également les règles relatives à la manipulation et à l’utilisation en toute sécurité (voir l’Annexe B).
Kemikalije, ki se uporabljajo za pripravo bazenske vode - Ozon
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-julij-2024
Kemikalije, ki se uporabljajo za pripravo bazenske vode - Ozon
Chemicals used for treatment of swimming pool water - Ozone
Produkte zur Aufbereitung von Schwimm- und Badebeckenwasser - Ozon
Produits chimiques utilisés pour le traitement de l'eau des piscines - Ozone
Ta slovenski standard je istoveten z: prEN 15074
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
May 2024
ICS 71.100.80 Will supersede EN 15074:2014
English Version
Chemicals used for treatment of swimming pool water -
Ozone
Produits chimiques utilisés pour le traitement de l'eau Produkte zur Aufbereitung von Schwimm- und
des piscines - Ozone Badebeckenwasser - Ozon
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, Türkiye 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
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 15074:2024 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 . 8
5 Purity criteria . 8
5.1 General. 8
5.2 Composition of in situ generated Ozone gas . 8
5.3 Impurities and main by-products . 9
5.4 Chemical parameters. 9
6 Test methods . 9
7 Labelling - Transportation - Storage . 9
7.1 Materials in contact with Ozone . 9
7.2 Risk and safety classification . 9
7.3 Transportation regulations and labelling . 10
7.4 Marking . 11
7.5 Stability . 11
Annex A (informative) General information on ozone . 12
A.1 Feed gas . 12
A.2 Use . 12
A.3 Operational control methods . 13
Annex B (normative) General rules relating to safety . 14
B.1 Rules for safe handling and use . 14
B.2 Emergency procedures . 14
Bibliography . 16
European foreword
This document (prEN 15074:2024) 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 15074:2014.
— proposed harmonized classification of ozone according to EU CLP regulation is added;
— reference for use of ozone is made to EU BPR and EU REACH regulation;
— new threshold limit for ozone in air;
— reference is made to FprEN 17971, standard for ozone generation devices. Device related matters
are shifted to FprEN 17971, e.g. operational safety of the installation room. Matters of the chemical
ozone itself remain within this standard;
— the use of ozone in pool water treatment is specified.
Introduction
In respect of potential adverse effects on the quality of water for swimming pools, caused by the product
covered by this document, it provides no information as to whether the product may be used without
restriction in any of the Member States of the EU or EFTA.
NOTE While awaiting the adoption of verifiable European criteria, attention is drawn to national regulations.
Ozone is a biocidal product according to the regulation (EU) No 528/2012 [1]. The use of ozone for
disinfection purposes falls under the provisions of the BPR, requiring access by the user to a data set for
the product authorization of ozone under the BPR. This access may be achieved directly or indirectly
e.g. via the manufacturers’ authorization for the ozone generated by their devices.
Users of in situ generated ozone should verify with their device manufacturer, if they can use ozone in
accordance to his product authorization for the disinfection of swimming pool water (approved under
the BPR for public and private/domestic use).
Non biocidal use of ozone, e.g. for oxidative purposes, falls under the provisions of the REACH Regulation
[2]. The use of ozone for non-biocidal purposes requires individual access by the user to the data set
provided for the authorization of ozone under REACH.
NOTE Conformity with the European Standard does not confer or imply authorization of the products 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 ozone used for treatment of water for swimming pools. It describes the
composition of ozone. It gives information on its use in swimming pool water treatment. It also
determines the rules relating to safe handling and use (see Annex B).
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.
FprEN 17971, Devices for in-situ generation of biocides — Ozone
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp/
— IEC Electropedia: available at https://www.electropedia.org/
3.1
normal temperature and pressure of gas
NTP
gas under the conditions of normal temperature tn = 0 °C and normal pressure pn = 101 325 Pa
3.2
feed gas
substance that is fed as gas to the ozone generation device to generate ozone
4 Description
4.1 Identification
4.1.1 Chemical name
Ozone.
General information on Ozone is described in Annex A.
4.1.2 Synonym or common name
None (has sometimes been called improperly “allotropic oxygen”).
4.1.3 Relative molecular mass
48.
4.1.4 Empirical formula
O .
4.1.5 Chemical formula
O .
1)
4.1.6 CAS Registry Number
10028-15-6.
)
4.1.7 EINECS reference
Not applicable.
4.2 Commercial form
Ozone is very unstable; it is exclusively generated on-site nearby its use by ozone generation devices.
4.3 Physical properties
4.3.1 Appearance
Bluish gas; the liquid is dark blue.
NOTE A weak absorption in the visual range between 435 nm and 475 nm.
4.3.2 Density
— Gas: 2,144 kg/m at NTP (Normal Temperature Pressure, 273 K and 1013,25 hPa);
— liquid: 1,574 g/ml at − 183 °C;
— solid: 1,728 g/cm .
4.3.3 Solubility in water
In pure water, the solubility values (S) expressed in grams per cubic meter water per (grams per cubic
meter) gas at 1013,25 hPa are given in Table 1.
Table 1 — Solubility in water
Temperature of Solubility
water
°C S, in:
g/ m HO
g/ m gas
0 0,64
5 0,5
10 0,39
15 0,31
20 0,24
25 0,19
30 0,15
35 0,12
1) Chemical Abstracts Service Registry Number.
2) European Inventory of Existing Commercial Chemical Substances.
NOTE 1 Recent surveys of literature data are given in Bibliography. See [3], [4] and [5].
NOTE 2 S is a ratio, not an absolute concentration.
4.3.4 Vapour pressure
The vapour pressure of ozone depending on temperature is given in Table 2.
Table 2 — Vapour pressure
Temperature Vapour pressure
°C hPa
- 183 0,14 7
- 180 0,28
- 170 1,88
- 160 8,97
- 150 33,06
- 140 98,92
- 130 253,31
- 120 569,28
- 110 1153,22
- 100 2 1390,79
3)
4.3.5 Boiling point at 1000 hPa
− 112 °C.
NOTE Vaporization heat: 681 kJ/m at NTP.
4.3.6 Melting point
− 196 °C.
4.3.7 Specific heat (liquid)
Not applicable.
4.3.8 Viscosity (dynamic)
0,004 2 Pa.s at − 195 °C;
0,001 55 Pa.s at − 183 °C.
4.3.9 Critical temperature
− 12,1 °C.
4.3.10 Critical pressure
5 4600 hPa.
3) 100 hPa = 1 bar.
4.3.11 Physical hardness
Not applicable.
4.4 Chemical properties
Ozone is a powerful oxidant and disinfectant. The standard redox potentials (ORP) (at 25 °C) are:
H
( E -values in volts):
O
+ - H
O + H O (1)
O + 2H + 2e →
2 2
E = 2,07 V
O
- -
H
(2)
O + H O + 2e → O + 2OH
E = 1,24 V
3 2 2
O
+ - H
H O (3)
OH° + H + e →
E = 2,42 V (calculated value)
O
H
If the pH increases by one unit, the E -values shall decrease by 30 mV per electron transferred.
H
At 1000 hPa and 25 °C and pH = 7 the E -values, versus the normal hydrogen electrode, become:
— O (1) = 1,66 V;
— O (2) = 0,82 V;
— OH° (3) = 2,21 V.
In water treatment most of the direct reactions of ozone are dipolar cyclo-additions and electrophilic
substitution reactions. Moreover ozone, in water, can generate radicals such as OH° in particular at
alkaline pH: (O + H O → 2 OH° + O ).
...
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