EN 1212:2005
(Main)Chemicals used for treatment of water intended for human consumption - Sodium polyphosphate
Chemicals used for treatment of water intended for human consumption - Sodium polyphosphate
This document is applicable to sodium polyphosphate used for treatment of water intended for human consumption. It describes the characteristics and specifies the requirements and the corresponding test methods for sodium polyphosphate. It gives information on its use in water treatment.
Produkte zur Aufbereitung von Wasser für den menschlichen Gebrauch - Natriumpolyphosphat
Dieses Dokument gilt für Natriumpolyphosphat zur Aufbereitung von Wasser für den menschlichen Gebrauch.
Es beschreibt die Eigenschaften von Natriumpolyphosphat und legt die Anforderungen sowie die
entsprechenden Prüfverfahren für Natriumpolyphosphat fest. Es gibt Informationen für die Anwendung von
Natriumpolyphosphat in der Wasseraufbereitung.
Produits chimiques utilisés pour le traitement de l'eau destinée à la consommation humaine - Polyphosphate de sodium
Kemikalije, ki se uporabljajo za pripravo pitne vode – Natrijev polifosfat
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
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
Overview
EN 1212:2005 (CEN) - "Chemicals used for treatment of water intended for human consumption - Sodium polyphosphate" - specifies the characteristics, minimum purity requirements and test methods for sodium polyphosphate used in drinking-water treatment. The standard covers product identification, commercial forms (solid: white powder/granules/glass; liquid: clear solution), composition, limits for impurities and trace elements, sampling and analytical procedures, and guidance on labelling, transport and storage. It is intended to ensure safe, consistent use of sodium polyphosphate in water treatment while helping suppliers and water utilities comply with national controls.
Key topics and technical requirements
- Scope & identification
- Chemical name: sodium polyphosphate (CAS 68915-31-1; EINECS 272-808-3); degree of condensation n ≥ 4.
- Composition
- Phosphate content (expressed as P2O5): 64–69% (dry mass basis).
- Sodium content (expressed as Na2O): ~29–34.5% (dry mass basis).
- Physical properties
- Bulk density (solid): 600–1 000 g/dm3; solubility ≈ 1 000 g/L at 25 °C; pH of 1 % solution ≈ 5–6.
- Purity criteria & limits
- Sulfate (SO4 2−): ≤ 500 mg/kg
- Fluoride (F−): ≤ 10 mg/kg
- Trace elements (mg/kg): Sb ≤ 3; As ≤ 3; Cd ≤ 3; Cr ≤ 10; CN ≤ 5; Pb ≤ 10; Hg ≤ 1; Ni ≤ 10; Se ≤ 3
- Test methods
- Sampling guidance for solids and liquids (ISO 3165, ISO 8213, ISO 6206).
- Main analyses: acid/base titration for P2O5/Na2O (potentiometric or indicator titration).
- Impurity and trace element analysis using validated methods (atomic absorption spectrometry, ICP techniques, hydride/AAS for certain elements) referenced in the standard (e.g., EN ISO 11885, EN ISO 11969).
Applications
- Used as an anti-scaling/anti-corrosion and sequestrant chemical in municipal and industrial drinking water treatment.
- Controls hardness, prevents precipitation of iron/manganese and metal scaling in distribution systems when dosed appropriately.
- Helps formulators and suppliers set specification limits and quality control procedures for sodium polyphosphate products and blends.
Who uses this standard
- Water utilities, treatment plant operators and engineers
- Chemical manufacturers and suppliers of water treatment products
- Quality control and analytical laboratories
- Regulators and procurement officers specifying material acceptance criteria
Related standards and references
- EN 1483, EN ISO 3696, EN ISO 11885, EN ISO 11969 and other ISO methods cited in EN 1212:2005 for sampling and elemental analysis.
- Note: compliance with EN 1212:2005 does not replace national regulatory approval for use in specific EU/EFTA countries; check local regulations before application.
Keywords: EN 1212:2005, sodium polyphosphate, water treatment, drinking water, purity criteria, test methods, P2O5, Na2O, CEN.
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Frequently Asked Questions
EN 1212:2005 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 - Sodium polyphosphate". This standard covers: This document is applicable to sodium polyphosphate used for treatment of water intended for human consumption. It describes the characteristics and specifies the requirements and the corresponding test methods for sodium polyphosphate. It gives information on its use in water treatment.
This document is applicable to sodium polyphosphate used for treatment of water intended for human consumption. It describes the characteristics and specifies the requirements and the corresponding test methods for sodium polyphosphate. It gives information on its use in water treatment.
EN 1212:2005 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 1212:2005 has the following relationships with other standards: It is inter standard links to EN 1212:1997, EN 13445-5:2002/A10:2008, EN ISO 11969:1996, EN 1371-2:1998, EN 13631-14:2003, EN 1998-6:2005, EN ISO 8751:1997, EN ISO 12846:2012, EN ISO 5961:1995, EN 14847:2005, EN ISO 3696:1995, EN ISO 11885:2009, EN 15041:2006, EN 15041:2014, EN 12184:2014. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 1212:2005 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 1212:2005 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 – Natrijev polifosfatProdukte zur Aufbereitung von Wasser für den menschlichen Gebrauch - NatriumpolyphosphatProduits chimiques utilisés pour le traitement de l'eau destinée a la consommation humaine - Polyphosphate de sodiumChemicals used for treatment of water intended for human consumption - Sodium polyphosphate71.100.80Chemicals for purification of water13.060.20Pitna vodaDrinking waterICS:Ta slovenski standard je istoveten z:EN 1212:2005SIST EN 1212:2005en01-julij-2005SIST EN 1212:2005SLOVENSKI
STANDARDSIST EN 1212:19991DGRPHãþD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1212
March 2005 ICS 71.100.80
Supersedes EN 1212:1997
English version
Chemicals used for treatment of water intended for human consumption - Sodium polyphosphate
Produits chimiques utilisés pour le traitement de l'eau destinée à la consommation humaine - Polyphosphate de sodium
Produkte zur Aufbereitung von Wasser für den menschlichen Gebrauch - Natriumpolyphosphat 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 1212:2005: ESIST EN 1212:2005
General information on sodium polyphosphate.15 Bibliography.17 SIST EN 1212:2005
EN 26595 by EN ISO 11969. 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 1212:2005
(ISO 11885:1996). EN ISO 11969, Water quality
- 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 technique — 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 1212:2005
3) 100 kPa = 1 bar. SIST EN 1212:2005
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