EN 1405:2009

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Kemikalije, ki se uporabljajo za pripravo pitne vode - Natrijev alginatProdukte zur Aufbereitung von Wasser für den menschlichen Gebrauch - Natrium-AlginatProduits chimiques utilisés pour le traitement de l'eau destinée à la consommation humaine - Alginate de sodiumChemicals used for treatment of water intended for human consumption - Sodium alginate71.100.80Chemicals for purification of water13.060.20Pitna vodaDrinking waterICS:Ta slovenski standard je istoveten z:EN 1405:2009SIST EN 1405:2009en,fr,de01-december-2009SIST EN 1405:2009SLOVENSKI
STANDARDSIST EN 1405:19991DGRPHãþD

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 1405August 2009ICS 71.100.80Supersedes EN 1405:1998
English VersionChemicals used for treatment of water intended for humanconsumption - Sodium alginateProduits chimiques utilisés pour le traitement de l'eaudestinée à la consommation humaine - Alginate de sodiumProdukte zur Aufbereitung von Wasser für denmenschlichen Gebrauch - Natrium-AlginatThis European Standard was approved by CEN on 24 July 2009.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:
Avenue Marnix 17,
B-1000 Brussels© 2009 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 1405:2009: ESIST EN 1405:2009

General information on sodium alginate . 16 A.1 Origin . 16 A.2 Use . 16 A.3 Rules for safe handling and use . 17 A.4 Emergency procedures . 17 Bibliography . 19
Sodium alginate (with D-mannuronic acid units) 3.1.6 CAS Registry Number1) 9005-38-3. 3.1.7 EINECS reference2) The EINECS inventory lists alginic acid, but does not apply numbers to the salts of alginic acid. The EINECS number for alginic acid is 232-68-01. 3.2 Commercial form Sodium alginate as specified in this standard is available as a solid containing a small amount of residual moisture. 3.3 Physical properties 3.3.1 Appearance The product is a white to pale yellowish-brown powder. 3.3.2 Density The bulk density of the product is typically in the range 0,7 g/cm3 to 1,0 g/cm3. 3.3.3 Solubility The product is soluble in hot or cold water. Its solubility is limited only by viscosity, with a paste being formed at concentrations of approximately 50 g/l and above. 3.3.4 Vapour pressure Not applicable. 3.3.5 Boiling point at 100 kPa Not applicable.
1) Chemical Abstracts Service Registry Number. 2) European Inventory of Existing Commercial Chemical Substances. SIST EN 1405:2009

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. SIST EN 1405:2009

5.2 Analyses 5.2.1 General Unless otherwise specified, all reagents shall be of recognised analytical grade. The water used shall conform to grade 2 specified in EN ISO 3696. 5.2.2 Main product If additional requirements are agreed between the customer and manufacturer/ supplier, the latter shall provide the necessary methods if requested, so that the customer can carry out his own quality check. A certificate of analysis shall be provided by the manufactured/supplier if requested. SIST EN 1405:2009

HCl + AlgNa→ OH + AlgNa
NaOH + AlgH2→ 5.2.2.1.3 Reagents 5.2.2.1.3.1 Propan-2-ol (isopropanol). 5.2.2.1.3.2 Hydrochloric acid, c(HCl) = 2 mol/l. 5.2.2.1.3.3 Propan-2-ol diluted solution (50 + 50) (V1 + V2) of propan-2-ol with HCl (5.2.2.1.3.2). 5.2.2.1.3.4 Propan-2-ol diluted solution (75 + 25) (V1 + V2) of propan-2-ol with water. 5.2.2.1.3.5 Sodium hydroxide solution, c(NaOH) = 0,5 mol/l. 5.2.2.1.3.6 Phenolphthalein indicator solution 5.2.2.1.4 Apparatus 5.2.2.1.4.1 Ordinary laboratory apparatus and glassware together with the following : 5.2.2.1.4.2 Filter crucible, pore size index P16 (diameter of pores 10 µm to 16 µm), 35 ml capacity, clean and dry. 5.2.2.1.4.3 Vacuum pump or water vacuum pump. 5.2.2.1.4.4 Filter fla
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