EN 15077:2013
(Main)Chemicals used for treatment of swimming pool water - Sodium hypochlorite
General Information
- Abstract
This European Standard 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 and determines the rules relating to safe handling and use of sodium hypochlorite (see Annex B).
- Status
- Withdrawn
- Publication Date
- 30-Apr-2013
- Withdrawal Date
- 17-Mar-2026
- Technical Committee
- CEN/TC 164 - Water supply
- Drafting Committee
- CEN/TC 164/WG 9 - Drinking water treatment
Overview
EN 15077:2013 (CEN) is the European product standard for sodium hypochlorite used directly or as an ingredient in formulations for swimming pool water treatment. It defines the chemical and physical characteristics, minimum purity criteria, permitted impurities/by‑products, required test methods and labelling/handling rules. The standard also provides practical information on use in pools (Annex A) and safety/ emergency procedures (Annex B).
Key topics and technical requirements
- Scope: Applies to aqueous sodium hypochlorite solutions up to 18% available (active) chlorine; common concentrates ≥12%.
- Identification & properties: Chemical name, CAS (7681‑52‑9), formula (NaClO), density (≈1.13–1.30 g/ml at 20 °C), alkaline pH (>11), appearance (clear yellow‑green), solubility and other physical data.
- Impurities and by‑products: Sodium chloride and sodium hydroxide are expected; sodium chlorate (a by‑product) is limited (≤ 5.4% of available chlorine at delivery). Product must be free of visible deposits or suspensions.
- Trace contaminants: Parametric limits are specified for metals and other species (examples):
- Arsenic (As): Type 1 max 1 mg/kg, Type 2 max 5 mg/kg
- Cadmium (Cd): Type 1 max 2.5 mg/kg, Type 2 max 5 mg/kg
- Lead (Pb): max 15 mg/kg (both types)
- Sodium bromate: limited (examples in standard: 2.5–5.0 g/kg of available chlorine)
- Test methods: Sampling and analysis methods reference EN 901.
- Labelling & regulation: Labelling updated to align with Regulation (EC) No 1272/2008 (CLP). The product is a biocide and is subject to biocidal product legislation; national approvals may still apply.
- Packaging & storage: Delivery in suitable polyethylene containers; includes guidance on storage stability, incompatibilities and long‑term stability (crystallisation/freezing behavior).
Applications and who uses this standard
- Pool operators and facility managers: ensure safe, compliant chlorine supplies and correct handling.
- Chemical manufacturers & formulators: verify product composition, impurity limits and stability.
- Suppliers & distributors: label, package and transport sodium hypochlorite per EN 15077 requirements.
- Testing laboratories & quality control: apply EN 901 test methods to demonstrate conformity.
- Regulators & procurement teams: set procurement specifications and check national approval requirements.
Related standards and legislation
- EN 901 (sampling and analysis for sodium hypochlorite)
- Regulation (EC) No 1272/2008 (CLP labelling)
- Biocidal product legislation in force (national/EU rules; see Directive 1998/8/EC historically)
EN 15077:2013 is a practical reference to ensure pool‑grade sodium hypochlorite meets safety, purity and labelling expectations across Europe.
Relations
- Effective Date
- 08-May-2013
- Replaced By
EN 15077:2026 - Chemicals used for treatment of swimming pool and spas water - Sodium hypochlorite - Effective Date
- 07-Feb-2024
- Effective Date
- 28-Jan-2026
- Effective Date
- 31-Jul-2019
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Frequently Asked Questions
EN 15077:2013 is a standard published by the European Committee for Standardization (CEN). Its full title is "Chemicals used for treatment of swimming pool water - Sodium hypochlorite". This standard covers: This European Standard 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 and determines the rules relating to safe handling and use of sodium hypochlorite (see Annex B).
This European Standard 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 and determines the rules relating to safe handling and use of sodium hypochlorite (see Annex B).
EN 15077:2013 is classified under the following ICS (International Classification for Standards) categories: 71.100.80 - Chemicals for purification of water. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 15077:2013 has the following relationships with other standards: It is inter standard links to EN 15077:2006, EN 15077:2026, EN 901:2024, prEN 15077. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 15077:2013 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Kemikalije, ki se uporabljajo za pripravo bazenske vode - Natrijev hipokloritProdukte zur Aufbereitung von Schwimm- und Badebeckenwasser - NatriumhypochloritProduits chimiques utilisés pour le traitement de l'eau des piscines - Hypochlorite de sodiumChemicals used for treatment of swimming pool water - Sodium hypochlorite71.100.80Chemicals for purification of water13.060.25Voda za industrijsko uporaboWater for industrial useICS:Ta slovenski standard je istoveten z:EN 15077:2013SIST EN 15077:2013en,fr,de01-julij-2013SIST EN 15077:2013SLOVENSKI
STANDARDSIST EN 15077:20061DGRPHãþD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 15077
May 2013 ICS 71.100.80 Supersedes EN 15077:2006English Version
Chemicals used for treatment of swimming pool water - Sodium hypochlorite
Produits chimiques utilisés pour le traitement de l'eau des piscines - Hypochlorite de sodium
Produkte zur Aufbereitung von Schwimm- und Badebeckenwasser - Natriumhypochlorit This European Standard was approved by CEN on 14 March 2013.
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-CENELEC 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-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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 15077:2013: ESIST EN 15077:2013
General information on sodium hypochlorite . 13 A.1 Origin . 13 A.1.1 Raw materials . 13 A.1.2 Manufacturing process . 13 A.2 Use . 13 A.2.1 Function . 13 A.2.2 Form in which it is used . 13 SIST EN 15077:2013
General rules relating to safety . 14 B.1 Rules for safe handling and use . 14 B.2 Emergency procedures . 14 B.2.1 First aid . 14 B.2.2 Spillage . 14 B.2.3 Fire . 14 Bibliography . 15
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
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