SIST EN 12836:2002

Surface active agents - Determination of the water number of alkoxylated products

This European Standard specifies the determination of the water number of ethoxylated products up to about 70 % ethylene oxide. EO/PO block polymers with water numbers higher than about 23 become hard to interpret.
NOTE   The values obtained by this method are not completely identical with the water number obtained in dioxane, in particular water numbers higher than 23.

Grenzflächenaktive Stoffe - Bestimmung der Wasserzahl von alkoxylierten Produkten

Diese Europäische Norm legt die Bestimmung der Wasserzahl von ethoxylierten Produkten mit einem Massen-anteil an Ethylenoxid bis zu etwa 70 % fest. EO/PO-Blockpolymere mit Wasserzahlen größer als etwa 23 sind schwierig zu interpretieren.
ANMERKUNG   Die Werte, die mit diesem Verfahren bestimmt werden, sind jedoch nicht vollständig identisch mit der Wasserzahl, die in Dioxan erhalten wird; dies gilt besonders für Wasserzahlen größer als 23.

Agents de surface - Détermination du nombre d'eau dans les produits alkoxylés

La présente Norme européenne prescrit une méthode de détermination du nombre d'eau des produits éthoxylés contenant jusqu'a 70 % d'oxyde d'éthylene. Les polymeres d'OE/OP en blocs dont le nombre d'eau est supérieur a environ 23, posent des problemes d'interprétation.
NOTE   Les valeurs obtenues avec la présente méthode ne sont pas absolument identiques au nombre d'eau obtenu avec le dioxane, en particulier dans le cas de nombres d'eau supérieurs a 23.

Površinsko aktivne snovi - Določevanje vodnega števila alkoksiliranih produktov

General Information

• Status: Published
• Publication Date: 31-Aug-2002
• ICS: 71.100.40 - Surface active agents
• Technical Committee: KDS - Cosmetics, chemical disinfectants and surface active agents
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Sep-2002
• Due Date: 01-Sep-2002
• Completion Date: 01-Sep-2002
• Ref Project: EN 12836:2002 - Surface active agents - Determination of the water number of alkoxylated products

Relations

• Replaces: SIST ENV 12836:2001 - Surface active agents - Determination of the water number of alkoxylated products
• Effective Date: 01-Sep-2002

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Grenzflächenaktive Stoffe - Bestimmung der Wasserzahl von alkoxylierten ProduktenAgents de surface - Détermination du nombre d'eau dans les produits alkoxylésSurface active agents - Determination of the water number of alkoxylated products71.100.40Površinsko aktivna sredstvaSurface active agentsICS:Ta slovenski standard je istoveten z:EN 12836:2002SIST EN 12836:2002en01-september-2002SIST EN 12836:2002SLOVENSKI
STANDARDSIST ENV 12836:20011DGRPHãþD



SIST EN 12836:2002



EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 12836March 2002ICS 71.100.40Supersedes ENV 12836:1999English versionSurface active agents - Determination of the water number ofalkoxylated productsAgents de surface - Détermination du nombre d'eau dansles produits alkoxylésGrenzflächenaktive Stoffe - Bestimmung der Wasserzahlvon alkoxylierten ProduktenThis European Standard was approved by CEN on 3 January 2002.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 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 Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2002 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 12836:2002 ESIST EN 12836:2002



EN 12836:2002 (E)2ContentspageForeword.3Introduction.41Scope.52Normative references.53Term and definition.54Principle.55Reagents.56Apparatus.67Preparation of test sample.68Procedure.69Expression of results.710Precision.711Test report.7Annex A (informative)
Interlaboratory test results.8Bibliography.9SIST EN 12836:2002



EN 12836:2002 (E)3ForewordThis document EN 12836:2002 has been prepared by Technical Committee CEN/TC 276 "Surface active agents",the secretariat of which is held by AFNOR.This European Standard shall be given the status of a national standard, either by publication of an identical text orby endorsement, at the latest by September 2002, and conflicting national standards shall be withdrawn at thelatest by September 2002.This document supersedes ENV 12836:1999.Significant technical differences between this standard and ENV 12836:1999 are the deletion of annexes B and Cand the modification of annex A relating of precision data.Annex A is informative.According to the CEN/CENELEC Internal Regulations, the national standards organizations of the followingcountries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland,France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain,Sweden, Switzerland and the United Kingdom.SIST EN 12836:2002



EN 12836:2002 (E)4IntroductionH.L. Greenwald, G.L. Brown and M.N. Fineman
[1] and W.C. Griffin [2] proposed the so-called water number as aneasy-to-measure criterion for the hydrophilic-lipophilic-balance (HLB) value of surface active agents and oils. Themethod described was based on a dioxane/benzene mixture. In the following test method noxious benzene hasbeen replaced by toluene. The water number is not altered by this change.It is also possible to replace dioxane with triethylene glycol dimethyl ether. This, however, results in a change in theabsolute numerical value of the water number, especially for high molecular mass nonionics (for example ethyleneoxide/propylene oxide (EO/PO) block polymers).SIST EN 12836:2002



EN 12836:2002 (E)51 ScopeThis European Standard speci
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