EN 1791:1997
Current
The latest, up-to-date edition.
Surface active agents - Fatty alkyl dimethyl amine oxides - Determination of the amine oxide content
19-02-1997
Foreword
1 Scope
2 Normative references
3 Principle
4 Reagents
5 Apparatus
6 Sampling
7 Procedure
7.1 Titration of the sum: Amine oxide and tertiary
amine
7.2 Polonovski reaction and titration of tertiary
amine
8 Expression of results
8.1 Calculation
8.2 Precision
9 Test report
Annex A (informative) Instrument settings
Annex B (informative)
This draft European Standard specifies a method for the determination of up to approximately 2 milli-equivalents of tertiary amine oxide. Components which lose their basicity in reaction with acetic anhydride by forming an amide (e.g. primary and secondary amines) interfere. If present, these primary and secondary amines must be determined by a different procedure e.g. reaction with carbondisulfide.
| Committee |
CEN/TC 276
|
| DocumentType |
Standard
|
| PublisherName |
Comite Europeen de Normalisation
|
| Status |
Current
|
| Standards | Relationship |
| UNE-EN 1791:1997 | Identical |
| NBN EN 1791 : 1997 | Identical |
| NF EN 1791 : 1997 | Identical |
| I.S. EN 1791:1997 | Identical |
| SN EN 1791 : 1997 | Identical |
| NS EN 1791 : 1ED 1997 | Identical |
| NEN EN 1791 : 1997 | Identical |
| BS EN 1791:1997 | Identical |
| PN EN 1791 : 1999 | Identical |
| UNI EN 1791 : 1999 | Identical |
| DIN EN 1791:1997-03 | Identical |
| ISO 1042:1998 | Laboratory glassware — One-mark volumetric flasks |
| ISO 607:1980 | Surface active agents and detergents Methods of sample division |
Access your standards online with a subscription
Features
-
Simple online access to standards, technical information and regulations.
-
Critical updates of standards and customisable alerts and notifications.
-
Multi-user online standards collection: secure, flexible and cost effective.