SIST EN 1201:2005

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Kemikalije, ki se uporabljajo za pripravo pitne vode – Kalijev dihidrogen fosfat (V) (KH2PO4)Produkte zur Aufbereitung von Wasser für den menschlichen Gebrauch - MonokaliumdihydrogenphosphatProduits chimiques utilisés pour le traitement de l'eau destinée a la consommation humaine - Dihydrogénophosphate de potassiumChemicals used for treatment of water intended for human consumption - Potassium dihydrogen orthophosphate71.100.80Chemicals for purification of water13.060.20Pitna vodaDrinking waterICS:Ta slovenski standard je istoveten z:EN 1201:2005SIST EN 1201:2005en01-julij-2005SIST EN 1201:2005SLOVENSKI
STANDARDSIST EN 1201:19991DGRPHãþD

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1201
March 2005 ICS 71.100.80 Supersedes EN 1201:1997 English version
Chemicals used for treatment of water intended for human consumption - Potassium dihydrogen orthophosphate
Produits chimiques utilisés pour le traitement de l'eau destinée à la consommation humaine - Dihydrogénophosphate de potassium
Produkte zur Aufbereitung von Wasser für den menschlichen Gebrauch - MonokaliumdihydrogenphosphatThis 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.
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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 1201:2005: ESIST EN 1201:2005

General information on potassium dihydrogen orthophosphate.15 Bibliography.17 SIST EN 1201:2005

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 1201:2005

- 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 - Part1: 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). 3 Description 3.1 Identification 3.1.1 Chemical name Potassium dihydrogen orthophosphate. SIST EN 1201:2005

3.1.3 Relative molecular mass 136,0. 3.1.4 Empirical formula KH2PO4. 3.1.5 Chemical formula KH2PO4. 3.1.6 CAS Registry Number 3) 7778-77-0. 3.1.7 EINECS reference 2) 231-913-4. 3.2 Commercial form The potassium dihydrogen orthophosphate is available in a number of different forms (see 3.3.1). Different commercial forms, solids or dissolved in water are possible. All concentrations mentioned refer to the active matter and shall be calculated accordingly. NOTE Potassium dihydrogen orthophosphate can be a component of mixtures sold for water treatment purposes. 3.3 Physical properties 3.3.1 Appearence Solid : The product is a white powder, granules or crystals. Liquid : The product is a clear solution. 3.3.2 Density Solid : The bulk density of the product varies from 500 g/dm3 to 1 100 g/dm3. Liquid : The density of solution is 1,036 g/ml for a product concentration of 50 g/l at 20 °C. 3.3.3 Solubility in water The solubility is water is approximately 220 g/l at 25 °C.
3) Chemical Abstracts Service Registry Number 2) European Inventory of Existing Commercial Chemical Substances SIST EN 1201:2005

For the solid product 250 °C. 3.3.7 Specific heat Not known. 3.3.8 Viscosity (dynamic) For the solid product it is not applicable. For the liquid : the viscosity is equal to 5 mPa.s for a product concentration of 50 g/l. 3.3.9 Critical temperature Not applicable. 3.3.10 Critical pressure Not applicable. 3.3.11 Physical hardness Not applicable. 3.4 Chemical properties The solutions of potassium dihydrogen orthophosphate have acidic reactions. The pH value of a solution
of a mass fraction of 1 % is approximately 4,5. 4 Purity criteria 4.1 General This document specifies the minimum purity requirements for potassium dihydrogen orthophosphate used for the treatment of water intended for human consumption. Limits are given for impurities commonly present in the product. Depending on the raw materials and the manufacturing process other impurities may be present and, if so, this shall be notified to the user and when necessary to relevant authorities. NOTE Users of this product should check the national regulations in order to clarify whether it is of appropriate purity for treatment of water intended for human consumption, taking into account raw water quality, required dosage, contents of other impurities and additives used in the products not stated in this document.
3) 100 kPa = 1 bar SIST EN 1201:2005

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 1201:2005

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 potassium dihydrogen orthophosphate. For para
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