EN 12672:2008
(Main)Chemicals used for treatment of water intended for human consumption - Potassium permanganate
Chemicals used for treatment of water intended for human consumption - Potassium permanganate
This European Standard is applicable to potassium permanganate used for treatment of water intended for human consumption. It describes the characteristics of potassium permanganate and specifies the requirements and the corresponding test methods for potassium permanganate. It gives information on its use in water treatment.
Produkte zur Aufbereitung von Wasser für den menschlichen Gebrauch - Kaliumpermanganat
Diese Europäische Norm gilt für Kaliumpermanganat zur Aufbereitung von Wasser für den menschlichen Gebrauch. Sie beschreibt die Eigenschaften von Kaliumpermanganat und legt die Anforderungen sowie die entsprechenden Prüfverfahren für Kaliumpermanganat fest. Sie enthält Angaben zu dessen Anwendung in der Wasseraufbereitung.
Produits chimiques pour le traitement de l'eau destinée à la consommation humaine - Parmanganate de potassium
La présente Norme européenne s’applique au permanganate de potassium utilisé pour le traitement de l’eau destinée à la consommation humaine. Elle décrit les caractéristiques du permanganate de potassium et spécifie les exigences et les méthodes d’essai correspondantes. Elle donne des informations pour son emploi dans le traitement de l’eau.
Kemikalije, ki se uporabljajo za pripravo pitne vode - Kalijev permanganat
General Information
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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 - Kalijev permanganatProdukte zur Aufbereitung von Wasser für den menschlichen Gebrauch - KaliumpermanganatProduits chimiques utilisés pour le traitement de l'eau destinée à la consommation humaine - Parmanganate de potassiumChemicals used for treatment of water intended for human consumption - Potassium permanganate71.100.80Chemicals for purification of water13.060.20Pitna vodaDrinking waterICS:Ta slovenski standard je istoveten z:EN 12672:2008SIST EN 12672:2009en,fr,de01-januar-2009SIST EN 12672:2009SLOVENSKI
STANDARDSIST EN 12672:20011DGRPHãþD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 12672July 2008ICS 71.100.80Supersedes EN 12672:2000
English VersionChemicals used for treatment of water intended for humanconsumption - Potassium permanganateProduits chimiques utilisés pour le traitement de l'eaudestinée à la consommation humaine - Parmanganate depotassiumProdukte zur Aufbereitung von Wasser für denmenschlichen Gebrauch - KaliumpermanganatThis European Standard was approved by CEN on 28 June 2008.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN 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 translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2008 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 12672:2008: ESIST EN 12672:2009
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Foreword 3 Introduction 4 1 Scope 5 2 Normative references 5 3 Description 5 4 Purity criteria 8 5 Test methods 9 6 Labelling - Transportation - Storage 14 Annex A (informative)
General information on potassium permanganate 16 Annex B (normative)
General rules relating to safety 18 Bibliography 20
1) Chemicals Abstracts Service Registry Number. 2) European Inventory of Existing Commercial Chemical Substances. SIST EN 12672:2009
KMnO4 (g/l )= 30.55 + 0.796 (T, °C) + 0.0392 (T, °C)2 where
T
is the Solution Temperature (°C). Table 1 — Solubility in water Temperature °C KMnO4 g/l 5 35,51 10 42,43 15 51,31 20 62,15 25 74,95 30
89,71 3.3.4 Vapour pressure Not applicable. 3.3.5 Boiling point at 100 kPa3) Not applicable. 3.3.6 Melting point Product decomposes at 240 °C with emission of oxygen. 3.3.7 Specific heat 744,2 kJ/kg.K at 20 °C. 3.3.8 Viscosity (dynamic) Not applicable. 3.3.9 Critical temperature Not applicable.
3) 100 kPa = 1 bar SIST EN 12672:2009
Limit mg/kg of product Arsenic (As) max. 20 Cadmium (Cd) max. 50 Chromium (Cr) max. 50 Mercury (Hg) max. 10 Nickel (Ni) max. 50 Lead (Pb) max. 50 Antimony (Sb) max. 50 Selenium (Se) max. 50 NOTE Cyanide, which does not exist in a strong oxidizing medium such as potassium permanganate, is not a relevant chemical parameter. Pesticides and polycyclic aromatic hydrocarbons are not by-products of the manufacturing process. 4.5 Flowability of free–flowing grade The free-flowing grade shall pass the flowability test. 5 Test methods 5.1 Sampling Observe the general recommendations of ISO 3165 and take account of ISO 6206. Prepare the laboratory sample(s) required by the relevant procedure described in ISO 8213. 5.2 Analysis 5.2.1 Determination of potassium permanganate (main product) 5.2.1.1 Principle Reduction of potassium permanganate Mn(VII) to Mn(II) with sodium oxalate under acidic conditions. The excess of sodium oxalate is titrated with a standard volumetric solution of potassium permanganate. 5.2.1.2 Reagents All reagents shall be of a recognized analytical grade and the water used shall conform to grade 3 in accordance with EN ISO 3696. 5.2.1.2.1 Potassium permanganate. 5.2.1.2.2 Sodium oxalate. 5.2.1.2.3 Sulfuric acid solution, 20 % (m/m). 5.2.1.2.4 Potassium permanganate standard volumetric solution c(KMnO4) = 1,000 g/l. Weigh 1,000 g of the potassium permanganate (5.2.1.2.1), transfer to a 1 l volumetric flask and dilute to volume with water. Allow to stand with occasional mixing for 15 min. SIST EN 12672:2009
30 s. The standardization factor (F) is calculated as follows: VF40=
(1) where V is the volume, in millilitres, of potassium permanganate standard volumetric solution used in titration. 5.2.1.3 Apparatus 5.2.1.3.1 Ordinary laboratory apparatus and glassware. 5.2.1.4 Procedure Weigh 1,000 g of the sample and 2,120 g of sodium oxalate on a watch glass and transfer quantitatively to a 500 ml conical flask. Add 150 ml of water and 20 ml of 20 % (m/m) H2SO4 (5.2.1.2.3). Heat while stirring to 70 °C to 80 °C and then titrate with the potassium permanganate standard volumetric solution (5.2.1.2.4) to a faint pink end-point that persists for 20 s to 30 s. 5.2.1.5 Expression of results The content (P1) in percentage by mass (% (m/m)) of potassium permanganate in the sample is calculated as follows: ),(,11 1000100VFP×−=
(2) where F is the standardization factor determined as described in 5.2.1.2.4; V1 is the volume, in millilitres, of the potassium permanganate standard volumetric solution used in the titration. 5.2.2 Impurities 5.2.2.1 Manganese dioxide (MnO2) (water insolubles) 5.2.2.1.1 Principle Determination of mass fraction in (%) of manganese dioxide (MnO2 ) in a sample of potassium permanganate, by spectrometric analysis of Mn(II). MnO2 is separated from an aqueous solution of KMnO4 by filtration and subsequently reduced to Mn(II). The resulting solution is analysed according to EN ISO 11885.
%.
5.2.2.1.3 Apparatus 5.2.2.1.3.1 Ordinary laboratory apparatus and g
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