EN 12126:2005

Chemicals used for treatment of water intended for human consumption - Liquefied ammonia

This European Standard is applicable to liquefied ammonia used for treatment of water intended for human consumption .It describes the characteristics and specifies the requirements of liquefied ammonia and refers to the corresponding analytical methods. It gives information for its use in water treatment. It also determines the rules relating to safe handling and use of liquefied ammonia (see Annex B).

Produkte zur Aufbereintung von Wasser für den menschlichen Gebrauch - Ammoniak, flüssig

Diese Europäische Norm gilt für flüssiges Ammoniak zur Aufbereitung von Wasser für den menschlichen
Gebrauch. Sie beschreibt die Eigenschaften von flüssigem Ammoniak und legt die Anforderungen sowie die
entsprechenden Prüfverfahren für flüssiges Ammoniak fest. Sie gibt Informationen für die Anwendung von
flüssigem Ammoniak in der Wasseraufbereitung. Sie legt darüber hinaus Regeln für die sichere Handhabung
und Benutzung von flüssigem Ammoniak fest (siehe Anhang B).

Produits chimiques utilisés pour le traitement de l'eau destinée à la consommation humaine - Ammoniac liquéfié

La présente Norme européenne s'applique à l'ammoniac liquéfié utilisé pour le traitement de l'eau destinée à la consommation humaine. Il décrit les caractéristiques et spécifie les exigences de l'ammoniac liquéfié et les méthodes d'analyses correspondantes. Il donne des informations pour son emploi dans le traitement de l'eau. Il fixe également les règles relatives à la sécurité d'emploi et de manipulation (voir Annexe B).

Kemikalije, ki se uporabljajo za pripravo pitne vode - Salmiak

General Information

• Status: Withdrawn
• Publication Date: 21-Jun-2005
• Withdrawal Date: 13-Nov-2012
• ICS: 71.100.80 - Chemicals for purification of water
• Technical Committee: CEN/TC 164 - Water supply
• Drafting Committee: CEN/TC 164/WG 9 - Drinking water treatment
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Start Date: 14-Nov-2012
• Completion Date: 14-Nov-2012
• Directive: 305/2011 - Regulation (eu) No 305/2011 of the European Parliament and of the Council of 9 march 2011 laying down harmonised conditions for the marketing of construction products and repealing council directive 89/106/eec
• Directive: 89/106/EEC - Construction products
• Ref Project: SIST EN 12126:2005 - Chemicals used for treatment of water intended for human consumption - Liquefied ammonia

Relations

• Replaces: EN 12126:1998 - Chemicals used for treatment of water intended for human consumption - Liquefied ammonia
• Effective Date: 22-Dec-2008
• Replaced By: EN 12126:2012 - Chemicals used for treatment of water intended for human consumption - Liquefied ammonia
• Effective Date: 08-Jan-2011

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 - SalmiakProdukte zur Aufbereintung von Wasser für den menschlichen Gebrauch - Ammoniak, flüssigProduits chimiques utilisés pour le traitement de l'eau destinée a la consommation humaine - Ammoniac liquéfiéChemicals used for treatment of water intended for human consumption - Liquefied ammonia71.100.80Chemicals for purification of water13.060.20Pitna vodaDrinking waterICS:Ta slovenski standard je istoveten z:EN 12126:2005SIST EN 12126:2005en01-september-2005SIST EN 12126:2005SLOVENSKI
STANDARDSIST EN 12126:20001DGRPHãþD

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 12126June 2005ICS 71.100.80Supersedes EN 12126:1998
English VersionChemicals used for treatment of water intended for humanconsumption - Liquefied ammoniaProduits chimiques utilisés pour le traitement de l'eaudestinée à la consommation humaine - Ammoniac liquéfiéProdukte zur Aufbereintung von Wasser für denmenschlichen Gebrauch - Ammoniak, flüssigThis European Standard was approved by CEN on 12 May 2005.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 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 translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.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 STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2005 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 12126:2005: ESIST EN 12126:2005

General information on liquefied ammonia.15 Annex B (normative)
General rules relating to safety.16 Bibliography.17
NH3. SIST EN 12126:2005
3.1.6 CAS Registry Number1)
7664-41-7. 3.1.7 EINECS reference2)
231-635-3. 3.2 Commercial form
The product is available as liquefied gas. 3.3 Physical properties 3.3.1 Appearance and odour The product is colourless liquid with a characteristic pungent odour. 3.3.2 Density The density of the gas is 0,771 g/l at 101,3 kPa3) and 0 °C. The density of the liquid is 0,682 g/ml at 101,3 kPa and - 34 °C, and 0,61 g/ml at 850 kPa and 20 °C. 3.3.3 Solubility (in water) The solubility of the product in water is 900 g/l at 0 °C, 520 g/l at 20 °C, and 407 g/l at 30 °C. 3.3.4 Vapour pressure
The vapour pressure of the product is 400 kPa at 0 °C, 850 kPa at 20 °C and 2 035 kPa at
50 °C. 3.3.5 Boiling point at 100 kPa3) The boiling point of the product is -33,4 °C at 101,3 kPa. 3.3.6 Melting point
The melting point of the product is -77,7 °C at 101,3 kPa. 3.3.7 Specific heat
The specific heat of the product is 4,61 kJ/(kg K) at 0 °C and 4,86 kJ/(kg K) at 40 °C. 3.3.8 Viscosity, dynamic The viscosity of the product is 0,254 mPa.s at 33 °C and 101,3 kPa.
1) Chemical Abstracts Service Registry Number. 2) European Inventory of Existing Commercial Chemical Substances. 3) 100 kPa = 1 bar. SIST EN 12126:2005

132,4 °C. 3.3.10 Critical pressure
11 450 kPa. 3.3.11 Physical hardness
Not applicable. 3.4 Chemical properties Ammonia reacts violently with halogens, acids, acid halides, acid anhydrides and oxidizing agents. It reacts with zinc, copper, tin and their alloys. Mixtures of volume fraction of 15 % to 30 % of ammonia with air are explosive. 4 Purity criteria
4.1 General This European Standard specifies the minimum purity requirements for liquefied ammonia 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 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 product not stated in this product standard. Limits have been given for impurities and chemical 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 Liquefied ammonia shall not contain less than a mass fraction of 99,8 % of NH3. 4.3 Impurities and main by-products The product shall
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