EN 1203:2005
(Main)Chemicals used for treatment of water intended for human consumption - Tripotassium orthophosphate
Chemicals used for treatment of water intended for human consumption - Tripotassium orthophosphate
This document is applicable to tripotassium orthophosphate used for treatment of water intended for human consumption. It describes the characteristics and specifies the requirements and the corresponding test methods for tripotassium orthophosphate. It gives information on its use in water treatment. It also determines the rules relating to safe handling and use (see annex B).
Produkte zur Aufbereitung von Wasser für den menschlichen Gebrauch - Trikaliumphosphat
Dieses Dokument gilt für Trikaliumphosphat zur Aufbereitung von Wasser für den menschlichen Gebrauch. Es
beschreibt die Eigenschaften von Trikaliumphosphat und legt die Anforderungen sowie die entsprechenden
Prüfverfahren für Trikaliumphosphat fest. Es gibt Informationen für die Anwendung von Trikaliumphosphat in
der Wasseraufbereitung. Es legt darüber hinaus Regeln für die sichere Handhabung und Benutzung fest
(siehe Anhang B).
Produits chimiques utilisés pour le traitement de l'eau destinée à la consommation humaine - Phosphate tripotassique
Le présent document est applicable au phosphate tripotassique utilisé pour le traitement de l�eau destinée à la
consommation humaine. Il décrit les caractéristiques et spécifie les exigences et les méthodes d�essai
correspondantes pour le phosphate tripotassique. Il donne des informations pour son emploi dans le
traitement de l�eau. Il fixe également les règles relatives à la sécurité d�emploi et de manipulation (voir
Annexe B).
Kemikalije, ki se uporabljajo za pripravo pitne vode – Trikalijev fosfat
General Information
- Status
- Published
- Publication Date
- 15-Mar-2005
- Technical Committee
- CEN/TC 164 - Water supply
- Drafting Committee
- CEN/TC 164/WG 9 - Drinking water treatment
- Current Stage
- 9060 - Closure of 2 Year Review Enquiry - Review Enquiry
- Start Date
- 02-Dec-2024
- Completion Date
- 02-Dec-2024
- Directive
- 89/106/EEC - Construction products
Relations
- Effective Date
- 22-Dec-2008
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
Overview
EN 1203:2005 is the CEN (European) standard that specifies requirements for tripotassium orthophosphate (K3PO4) when used for the treatment of water intended for human consumption. The document defines identification, commercial forms (solid powder or aqueous solution), key physical and chemical properties (e.g., white powder, solubility ≈ 1000 g/l at 25 °C, 1 % solution pH ≈ 12), purity limits, required test methods, labelling/transport/storage rules and general safety provisions (Annex B). Conformity with EN 1203:2005 does not replace national regulatory approvals for use in EU/EFTA member states.
Key Topics and Requirements
- Identification
- Chemical name: Tripotassium orthophosphate (tribasic potassium phosphate), formula K3PO4, CAS 7778-53-2.
- Composition (dry mass basis)
- Phosphate expressed as P2O5: 32 ± 1.0 %
- Potassium expressed as K2O: 62.5 ± 1.0 %
- Impurities (limits, mg/kg dry product)
- Sulfate (SO4 2−): max 500
- Fluoride (F−): max 10
- Trace chemical parameters (limits, mg/kg)
- Antimony, Arsenic, Cadmium, Selenium: max 3
- Chromium, Lead, Nickel: max 10
- Cyanide: max 5
- Mercury: max 1
- Test methods and sampling
- Sampling recommendations reference ISO 3165, ISO 8213, ISO 6206.
- Main constituents (P2O5, K2O): alkalimetric titration (pH endpoints 4.45 → 9.22) or potentiometric titration.
- Sulfate by ISO 2997, fluoride by ISO 3360; trace metals and metalloids by atomic absorption/ICP methods per referenced EN/ISO standards.
- Labelling, transport and storage
- Standard includes requirements and guidance for safe handling, storage and transport; Annex B contains general safety rules.
Applications and Who Uses This Standard
- Water utilities and municipal treatment plants selecting or dosing chemicals for potable water processes.
- Chemical manufacturers and suppliers producing, certifying and labelling tripotassium orthophosphate for drinking-water applications.
- Analytical and testing laboratories performing acceptance testing, purity verification and trace-impurity analysis.
- Regulators and procurement specialists assessing conformity, safety data and transport/storage procedures.
- Consultants and engineers specifying materials in water-treatment design and quality assurance.
Related Standards (selected)
- EN 1483 - determination of mercury
- EN ISO 3696 - water for analytical laboratory use
- EN ISO 11969 - arsenic determination (hydride technique)
- ISO 8213 / ISO 3165 / ISO 6206 - sampling of chemical products
- ISO 2997, ISO 3360 - sulfate and fluoride determinations
EN 1203:2005 is primarily a quality, testing and safety specification for the use of tripotassium orthophosphate in drinking-water contexts; users should also verify national regulatory approval and any local dose or use constraints before application.
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Frequently Asked Questions
EN 1203:2005 is a standard published by the European Committee for Standardization (CEN). Its full title is "Chemicals used for treatment of water intended for human consumption - Tripotassium orthophosphate". This standard covers: This document is applicable to tripotassium orthophosphate used for treatment of water intended for human consumption. It describes the characteristics and specifies the requirements and the corresponding test methods for tripotassium orthophosphate. It gives information on its use in water treatment. It also determines the rules relating to safe handling and use (see annex B).
This document is applicable to tripotassium orthophosphate used for treatment of water intended for human consumption. It describes the characteristics and specifies the requirements and the corresponding test methods for tripotassium orthophosphate. It gives information on its use in water treatment. It also determines the rules relating to safe handling and use (see annex B).
EN 1203:2005 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 1203:2005 has the following relationships with other standards: It is inter standard links to EN 1203:1997, EN ISO 11969:1996, EN 1371-2:1998, EN 13631-14:2003, EN ISO 3696:1995, EN ISO 11885:2009, EN 13445-5:2002/A10:2008, EN ISO 12846:2012, EN ISO 5961:1995, EN 14847:2005, EN 1998-6:2005, EN ISO 8751:1997. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 1203:2005 is associated with the following European legislation: EU Directives/Regulations: 305/2011, 89/106/EEC. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
EN 1203:2005 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 pitne vode – Trikalijev fosfatProdukte zur Aufbereitung von Wasser für den menschlichen Gebrauch - TrikaliumphosphatProduits chimiques utilisés pour le traitement de l'eau destinée a la consommation humaine - Phosphate tripotassiqueChemicals used for treatment of water intended for human consumption - Tripotassium orthophosphate71.100.80Chemicals for purification of water13.060.20Pitna vodaDrinking waterICS:Ta slovenski standard je istoveten z:EN 1203:2005SIST EN 1203:2005en01-julij-2005SIST EN 1203:2005SLOVENSKI
STANDARDSIST EN 1203:19991DGRPHãþD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1203
March 2005 ICS 71.100.80 Supersedes EN 1203:1997 English version
Chemicals used for treatment of water intended for human consumption - Tripotassium orthophosphate
Produits chimiques utilisés pour le traitement de l'eau destinée à la consommation humaine - Phosphate tripotassique
Produkte zur Aufbereitung von Wasser für den menschlichen Gebrauch - Trikaliumphosphat This European Standard was approved by CEN on 3 February 2005.
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 Central Secretariat 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 Central Secretariat has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, 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 © 2005 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1203:2005: ESIST EN 1203:2005
General information on tripotassium orthophosphate.15 Annex B (normative)
General rules relating to safety.16 Bibliography.17
EN 26595 by EN ISO 11969; c) introduction of annex B. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. SIST EN 1203:2005
- Determination of arsenic- Atomic absorption spectrometric method (hydride technique) (ISO 11969:1996). ISO 2997, Phosphoric acid for industrial use – Determination of sulfate content – Method by reduction and titrimetry. ISO 3165, Sampling of chemical products for industrial use – Safety in sampling. ISO 3360, Phosphoric acid and sodium phosphates for industrial use (including foodstuffs) - Determination of fluorine content – Alizarin complexone and lanthanum nitrate photometric method. ISO 6206, Chemical products for industrial use – Sampling – Vocabulary. ISO 6703-1, Water quality – Determination of cyanide – Part 1 : Determination of total cyanide. ISO 8213, Chemical products for industrial use – Sampling techniques – Solid chemical products in the form of particles varying from powders to coarse lumps. ISO 8288, Water quality – Determination of cobalt, nickel, copper, zinc, cadmium and lead – Flame atomic absorption spectrometric methods. ISO 9174, Water quality – Determination of chromium – Atomic absorption spectrometric methods. ISO 9965, Water quality – Determination of selenium – Atomic absorption spectrometric method (hydride technique).
1) Chemical Abstracts Service Registry Number. 2) European Inventory of Existing Commercial Chemical Substances. SIST EN 1203:2005
1 %
is approximately 12.
3) 100 kPa = 1 bar. SIST EN 1203:2005
Limit
mg/kg of dry product Sulfate (SO42-) max.500 Fluoride (F-) max.10 4.4 Chemical parameters Content of various chemical parameters depends on the origin of the raw materials, most of these elements are present only as traces. The product shall conform to the requirements specified in Table 2. SIST EN 1203:2005
Limit
mg/kg of dry product Antimony (Sb) max. 3 Arsenic (As) max. 3 Cadmium (Cd) max. 3 Chromium (Cr) max. 10 Cyanide (CN) max. 5 Lead (Pb) max. 10 Mercury (Hg) max. 1 Nickel (Ni) max. 10 Selenium (Se) max. 3 NOTE Pesticides and polycyclic aromatic hydrocarbons are not relevant in tripotassium orthophosphate. For parametric values of tripotassium orthophosphate on trace metal content in drinking water, see [1]. 5 Test methods 5.1 Samp
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