Surface active agents - Determination of the dispersing effect of surfactants on powder

This document specifies a method for the determination of the effectiveness of surface active agents to create and to stabilize a dispersion of pigment powder in water. It is applicable to all classes of surface active agents and formulations of surface active agents. The method can also be applied analogously to other powders.

Grenzflächenaktive Stoffe - Bestimmung der Dispersionswirkung von Tensiden auf Pulver

Diese Europäische Norm legt ein Verfahren zur Bestimmung der Wirksamkeit von grenzflächenaktiven Stoffen fest, Dispersionen von Pigmentpulvern in Wasser herzustellen und zu stabilisieren. Das Verfahren gilt für alle Klassen von grenzflächenaktiven Stoffen und ihre Formulierungen. Es ist analog auch für andere Pulver anwendbar.

Agents de surface - Détermination de l'effet de dispersion des agents de surface sur les poudres

La présente Norme européenne spécifie une méthode de détermination de l’efficacité des agents de surface
afin de disperser et de stabiliser la dispersion de pigment en poudre dans l'eau. La méthode est applicable à
toutes les classes d’agents de surface et de formulations d’agents de surface. De manière analogue, la
méthode peut également être appliquée à d’autres poudres.

Površinsko aktivne snovi - Določevanje disperznega učinka površinsko aktivnih snovi na prašek

General Information

Status
Published
Public Enquiry End Date
26-Oct-2008
Publication Date
26-Jan-2009
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
26-Jan-2009
Due Date
02-Apr-2009
Completion Date
27-Jan-2009

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Grenzflächenaktive Stoffe - Bestimmung der Dispersionswirkung von Tensiden auf PulverAgents de surface - Détermination de l'effet de dispersion des agents de surface sur les poudresSurface active agents - Determination of the dispersing effect of surfactants on powder71.100.40Površinsko aktivna sredstvaSurface active agentsICS:Ta slovenski standard je istoveten z:EN 15647:2009SIST EN 15647:2009en,fr,de01-marec-2009SIST EN 15647:2009SLOVENSKI

STANDARD
SIST EN 15647:2009

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 15647January 2009ICS 71.100.40 English VersionSurface active agents - Determination of the dispersing effect ofsurfactants on powderAgents de surface - Détermination des forces de dispersiondes surfactants sur la poudreGrenzflächenaktive Stoffe - Bestimmung derDispersionswirkung von Tensiden auf PulverThis European Standard was approved by CEN on 29 November 2008.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: rue de Stassart, 36

B-1050 Brussels© 2009 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 15647:2009: ESIST EN 15647:2009

EN 15647:2009 (E) 2 Contents Page Foreword ..............................................................................................................................................................3 1 Scope ......................................................................................................................................................4 2 Normative references ............................................................................................................................4 3 Terms and definitions ...........................................................................................................................4 4 Principle ..................................................................................................................................................4 5 Reagents .................................................................................................................................................4 6 Apparatus ...............................................................................................................................................5 7 Sampling and preparation of the test sample .....................................................................................5 8 Procedure ...............................................................................................................................................5 8.1 Preparation of the surfactant solution.................................................................................................5 8.2 Positioning of the cylinder ....................................................................................................................5 8.3 Adjustment of the stirrer velocity ........................................................................................................6 8.4 Carrying out of the test .........................................................................................................................6 9 Calculation and expression of results .................................................................................................6 10 Precision .................................................................................................................................................7 10.1 Repeatability limit ..................................................................................................................................7 10.2 Reproducibility limit ..............................................................................................................................7 11 Test report ..............................................................................................................................................8 Annex A (informative)

Statistical and other data derived from the results of interlaboratory tests .........9 Bibliography ..................................................................................................................................................... 10

SIST EN 15647:2009

EN 15647:2009 (E) 3 Foreword This document (EN 15647:2009) 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 or by endorsement, at the latest by July 2009, and conflicting national standards shall be withdrawn at the latest by July 2009. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: 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 the United Kingdom. SIST EN 15647:2009

EN 15647:2009 (E) 4 1 Scope This European Standard specifies a method for the determination of the effectiveness of surface active agents to create and to stabilize a dispersion of pigment powder in water. It is applicable to all classes of surface active agents and formulations of surface active agents. The method can also be applied analogously to other powders. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 607, Surface active agents and detergents – Methods of sample division 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 dispersing effect

dispersing power of a surfactant on powder effectiveness of a surfactant to produce and to stabilize a solid-liquid dispersion 4 Principle The dispersing effect is determined by the “degree of dispersion”. The “degree of dispersion” is the amount of solid particles kept suspended by the surfactant at a defined distance from the bottom of a measuring cylinder after a defined time related to a homogeneous distribution. 10,00 g zinc oxide is added to a measuring cylinder and mixed with 50 ml of an aqueous solution of the surface active agent (6 g/l). The mixture is stirred with a defined stirring speed for 30 minutes. The dispersion is then diluted by adding 150 ml water and stirred again with the same speed for another 30 minutes. After standing for 3 hours, during which the zinc oxide particles are allowed to sediment, a 5 ml sample is taken at the 150 ml marking of the measuring cylinder and the oven-dry mass is determined. The degree of dispersion is the amount of the oven-dry mass in percentage of the maximum amount. The maximum amount is obtained if a homogeneous dispersion is formed and no sedimentation occurs. An important aspect of the method is to use reprod

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