EN 12836:2002
Current
The latest, up-to-date edition.
Surface active agents - Determination of the water number of alkoxylated products
20-03-2002
Foreword
Introduction
1 Scope
2 Normative references
3 Term and definition
4 Principle
5 Reagents
6 Apparatus
7 Preparation of test sample
8 Procedure
9 Expression of results
10 Precision
11 Test report
Annex A (informative) Interlaboratory test results
Bibliography
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.NOTEThe values obtained by this method are not completely identical with the water number obtained in dioxane, in particular water numbers higher than 23.
| Committee |
CEN/TC 276
|
| DevelopmentNote |
Supersedes ENV 12836 (05/2002)
|
| DocumentType |
Standard
|
| PublisherName |
Comite Europeen de Normalisation
|
| Status |
Current
|
| Supersedes |
| Standards | Relationship |
| UNI EN 12836 : 2002 | Identical |
| NEN EN 12836 : 2002 | Identical |
| I.S. EN 12836:2002 | Identical |
| BS EN 12836:2002 | Identical |
| NF EN 12836 : 2002 | Identical |
| DIN EN 12836:2002-06 | Identical |
| UNE-EN 12836:2002 | Identical |
| NS EN 12836 : 1ED 2002 | Identical |
| SN EN 12836 : 2002 | Identical |
| NBN EN 12836 : 2002 | Identical |
| PN EN 12836 : 2003 | Identical |
| ISO 4320:1977 | Non-ionic surface active agents — Determination of cloud point index — Volumetric method |
| ISO 5725-2:1994 | Accuracy (trueness and precision) of measurement methods and results Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method |
| 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) |
| EN ISO 4320:1997 | Non-ionic surface active agents - Determination of cloud point index - Volumetric method (ISO 4320:1977, Including Erratum:1980) |
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