EN 15168:2006
Current
The latest, up-to-date edition.
Surface active agents - Determination of hydroxyl value - p-Toluensulfonyl isocyanate (TSI) method and potentiometric titration with tetrabutylammonium hydroxide
29-11-2006
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents
6 Apparatus
7 Sampling
8 Procedure
9 Calculation and expression of results
10 Precision
11 Test report
Annex A (informative) Interferences
Annex B (informative) Titration apparatus settings
Annex C (informative) Example for a typical potentiometric
titration curve
Annex D (informative) Statistical and other data derived
from the results of inter-laboratory
tests
Bibliography
This European Standard specifies a method for the determination of hydroxyl value of aliphatic and cyclic hydroxyl compounds with hydroxyl groups attached to primary and secondary carbon atoms.This European Standard is applicable to polyacetals, temperature sensitive materials, high solids polymer polyols and rigid polyols and phenols.This European Standard is not suitable for determination of hydroxyl groups attached to tertiary carbon atoms.NOTEThis method is currently recommended for neutral refined products. However for products that contain an excess of acidic species a validation should be carried out to show that the acidic species either does not interfere or that the acidic species interference has been obviated.
| Committee |
CEN/TC 276
|
| DocumentType |
Standard
|
| PublisherName |
Comite Europeen de Normalisation
|
| Status |
Current
|
| Standards | Relationship |
| DIN EN 15168:2007-02 | Identical |
| NS EN 15168 : 1ED 2006 | Identical |
| I.S. EN 15168:2006 | Identical |
| UNE-EN 15168:2007 | Identical |
| NEN EN 15168 : 2006 | Identical |
| NBN EN 15168 : 2007 | Identical |
| PN EN 15168 : 2007 | Identical |
| SN EN 15168 : 2007 | Identical |
| NF EN 15168 : 2007 | Identical |
| UNI EN 15168 : 2007 | Identical |
| BS EN 15168:2006 | Identical |
| EN 13926:2003 | Surface active agents - Alkoxylated derivatives - Determination of hydroxyl value - N-methyl imidazole method |
| ISO 607:1980 | Surface active agents and detergents Methods of sample division |
| 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) |
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