SIST EN 12678:2016

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Kemikalije, ki se uporabljajo za pripravo pitne vode - Kalijev peroksomonosulfatProdukte zur Aufbereitung von Wasser für den menschlichen Gebrauch - KaliumperoxomonosulfatProduits chimiques utilisés pour le traitement de l'eau destinée à la consommation humaine - Peroxomonosulfate de potassiumChemical used for treatment of water intended for human consumption - Potassium peroxomonosulfate71.100.80Chemicals for purification of water13.060.20Pitna vodaDrinking waterICS:Ta slovenski standard je istoveten z:EN 12678:2016SIST EN 12678:2016en,fr,de01-julij-2016SIST EN 12678:2016SLOVENSKI
STANDARDSIST EN 12678:20081DGRPHãþD

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 12678
May
t r s x ICS
y sä s r rä z r Supersedes EN
s t x y zã t r r zEnglish Version
Chemical used for treatment of water intended for human consumption æ Potassium peroxomonosulfate Produits chimiques utilisés pour le traitement de l 5eau destinée à la consommation humaine æ Peroxomonosulfate de potassium
Produkte zur Aufbereitung von Wasser für den menschlichen Gebrauch æ Kaliumperoxomonosulfat This European Standard was approved by CEN on
s z March
t r s xä
egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä
translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä
CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey andUnited Kingdomä
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Avenue Marnix 17,
B-1000 Brussels
t r s x CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
s t x y zã t r s x ESIST EN 12678:2016

.......................................................................................... 15 6.3 Transportation regulations and labelling ........................................................................................... 15 6.4 Marking ............................................................................................................................................................ 15 6.5 Storage ............................................................................................................................................................. 15 6.5.1 Generals ........................................................................................................................................................... 15 6.5.2 Long term stability ....................................................................................................................................... 15 SIST EN 12678:2016

General information on potassium peroxomonosulfate . 17 A.1 Origin . 17 A.1.1 Raw materials . 17 A.1.2 Manufacturing process . 17 A.2 Use . 17 A.2.1 Function . 17 A.2.2 Form in which it is used. 17 A.2.3 Treatment dose . 17 A.2.4 Means of application . 17 A.2.5 Secondary effects . 17 A.2.6 Removal of excess product . 18 Annex B (normative)
General rules relating to safety . 19 B.1 Rules for safe handling and use . 19 B.2 Emergency procedures . 19 B.2.1 First aid . 19 B.2.2 Spillage . 19 B.2.3 Fire . 19 Annex C (normative)
Determination of arsenic, antimony and selenium (atomic absorption spectrometry hydride technique) . 20 C.1 Safety precautions . 20 C.2 General principle . 20 C.3 Interferences . 20 C.4 Reagents . 20 C.5 Apparatus . 22 C.6 Procedure . 24 C.6.1 Preparation of the apparatus . 24 C.6.2 Preparation of calibration solutions . 24 C.6.3 Preparation of test solutions and standard solutions . 24 C.6.4 Determination of arsenic with sodium borohydride . 24 C.6.5 Determination of selenium with sodium borohydride . 25 C.6.6 Determination of antimony with sodium borohydride . 25 C.7 Calculation. 25 Bibliography . 26
1) Chemical Abtracts Service Registry Number. 2) European Inventory of Existing Commercial Chemical Substances. 3) 100 kPa = 1 bar SIST EN 12678:2016

(1) is: + 1,82 V at 25°C 4 Purity criteria 4.1 General This European Standard specifies the minimum purity requirements for potassium peroxomonosulfate used for the treatment of water intended for human consumption. Limits are given for impurities commonly present in the product. Depending on the raw material and the manufacturing process other impurities may be present and, if so, this shall be notified to the user and when necessary to the relevant authorities. 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 product not stated in the product standard. Limits have been given for impurities and chemicals parameters where these are likely to be present in significant quantities from the current production process and raw materials. If the production process or raw materials leads to significant quantities of impurities, by-products or additives being present, this shall be notified to the user. 4.2 Composition of commercial product The commercial product shall contain KHSO5 (potassium peroxomonosulfate) at a mass fraction greater than 45 percent or the manufacturer’s declared values. Typical composition in mass fraction should be approximately: 45 % potassium peroxsomonosulfate (KHSO5), 25 % potassium hydrogen sulfate (KHSO4), and 30 % potassium sulfate (K2SO4). 4.3 Impurities and main by-products See 4.1. 4.4 Chemical parameters NOTE For the purpose of this European Standard, “chemical parameters” are those defined in the EU Directive 98/83/EC of 3 November 1998 (see [2]). The content of chemical parameters shall conform to the requirements specified in Table 1. SIST EN 12678:2016

ª
t Nal
ª Na2S4O6 (3) 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. SIST EN 12678:2016
...