EN 12123:2012

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Kemikalije, ki se uporabljajo za pripravo pitne vode - Amonijev sulfatProdukte zur Aufbereitung von Wasser für den menschlichen Gebrauch - AmmoniumsulfatProduits chimiques utilisés pour le traitement de l'eau destinée à la consommation humaine - Sulfate d'ammoniumChemicals used for treatment of water intended for human consumption - Ammonium sulfate71.100.80Chemicals for purification of water13.060.20Pitna vodaDrinking waterICS:Ta slovenski standard je istoveten z:EN 12123:2012SIST EN 12123:2013en,fr,de01-april-2013SIST EN 12123:2013SLOVENSKI
STANDARDSIST EN 12123:20051DGRPHãþD

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 12123
November 2012 ICS 71.100.80 Supersedes EN 12123:2005English Version
Chemicals used for treatment of water intended for human consumption - Ammonium sulfate
Produits chimiques utilisés pour le traitement de l'eau destinée à la consommation humaine - Sulfate d'ammonium
Produkte zur Aufbereitung von Wasser für den menschlichen Gebrauch - Ammoniumsulfat This European Standard was approved by CEN on 23 September 2012.
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 CEN-CENELEC 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 translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
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B-1000 Brussels © 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12123:2012: ESIST EN 12123:2013

7783-20-2. 3.1.7 EINECS reference 2)
213-984-1. 3.2 Commercial form The product is a powder. 3.3 Physical properties 3.3.1 Appearance The product is a white, fine crystalline powder. 3.3.2 Density The density of the product is 1,8 g/cm³ at 20 °C. 3.3.3 Solubility in water The solubility of the product in water is 767 g/l at 25 °C. 3.3.4 Vapour pressure Not applicable. 3.3.5 Boiling point at 100 kPa 3)
Not applicable. 3.3.6 Crystallisation point The product decomposes above 235 °C. 3.3.7 Specific heat Not known.
1) Chemical Abstracts Service Registry Number. 2) European Inventory of Existing Commercial Chemical Substances. 3) 100 kPa = 1 bar. SIST EN 12123:2013

4.4 Chemical parameters The product shall conform to the requirements specified in Table 2.
Table 2 — Chemical parameters
Parameter Limit mg/kg of commercial product Antimony (Sb) max 1 Arsenic (As) max 5 Cadmium (Cd) max 0,5 Chromium (Cr) max 5 Lead (Pb) max 5 Mercury (Hg) max 0,1 Nickel (Ni) max 5 Selenium (Se) max 2 NOTE
Pesticides and polycyclic aromatic hydrocarbons and cyanides (CN-) are not relevant in ammonium sulfate because the raw materials used in the manufacturing are free of them. For parametric values of ammonium sulfate on trace metal content in drinking water, see [1]. 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 Analyses 5.2.1 Main product The content of ammoniacal nitrogen (C1), expressed as mass fraction in %, shall be determined in accordance with ISO 3332 (titrimetric method after distillation). The content of ammonium sulfate ((NH4)2SO4) (C2), expressed as mass fraction in %, is calculated from the formula: 72,412×=CC (1) SIST EN 12123:2013
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