EN 13955:2002
Current
The latest, up-to-date edition.
Surface active agents - Determination of Krafft point and solubility of ionic surface active agents
12-04-2002
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Apparatus
6 Procedure
7 Expression of results
8 Precision
9 Test report
Annex A (informative) Graphical representation of the
Krafft point
This European Standard specifies a method for the determination of the solubility of ionic surface active agents in water as a function of concentration and temperature and for the determination of the Krafft point by graphical evaluation of the measurement results.In the temperature range from 0 °C to 90 °C, the solubility is determined without any limitations if the viscosity of the solution does not exceed about 700 mPas.At temperatures below 0 °C, determination is only possible if the solvent does not freeze.The method is applicable both to pure surface active agents and to technical products optically clear and not unduly coloured solutions.The solubility both of solid and liquid surface active agents and of aqueous solutions of surface active agents is determined by the method specified.
| Committee |
CEN/TC 276
|
| DevelopmentNote |
Supersedes PREN 13955 (10/2005)
|
| DocumentType |
Standard
|
| PublisherName |
Comite Europeen de Normalisation
|
| Status |
Current
|
| Standards | Relationship |
| NBN EN 13955 : 2003 | Identical |
| NEN EN 13955 : 2003 | Identical |
| NS EN 13955 : 1ED 2003 | Identical |
| I.S. EN 13955:2003 | Identical |
| PN EN 13955 : 2005 | Identical |
| SN EN 13955 : 2003 | Identical |
| UNE-EN 13955:2003 | Identical |
| UNI EN 13955 : 2003 | Identical |
| BS EN 13955:2002 | Identical |
| NF EN 13955 : 2003 | Identical |
| DIN EN 13955:2003-03 | Identical |
| CEN/TS 17035:2017 | Surface Active Agents - Bio-based surfactants - Requirements and test methods |
| S.R. CEN/TS 17035:2017 | SURFACE ACTIVE AGENTS - BIO-BASED SURFACTANTS - REQUIREMENTS AND TEST METHODS |
| PD CEN/TS 17035:2017 | Surface Active Agents. Bio-based surfactants. Requirements and test methods |
| ISO 383:1976 | Laboratory glassware — Interchangeable conical ground joints |
| ISO 3696:1987 | Water for analytical laboratory use — Specification and test methods |
| EN ISO 3696:1995 | Water for analytical laboratory use - Specification and test methods (ISO 3696:1987) |
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