EN ISO 6845:2003
Current
The latest, up-to-date edition.
Surface active agents - Technical alkane sulfonates - Determination of the mean relative molecular mass of the alkane monosulfonates and the alkane monosulfonate content (ISO 6845:1989)
19-02-2003
Foreword
1 Scope
2 Normative references
3 Definition
4 Principle
5 Reagents
6 Apparatus
7 Sampling
8 Procedure
9 Expression of results
10 Test report
A test portion is dissolved in ethanol and the solution is acidified. The alkane monosulfonic acids are separated from the alkane disulfonates and sulfate ions by extraction with light petroleum. The light petroleum phase is evaporated and the residue is solved in ethanol. Traces of alkali are removed by means of a cation-exchange column. The eluate is neutralized with carbonate-free sodium hydroxide solution. The sodium alkane monosulfonates so formed are dried and weighed. The mean relative molecular mass of the alkanemonosulfonates and the alkanemonosulfonate content are calculated.
| Committee |
CEN/TC 276
|
| DocumentType |
Standard
|
| PublisherName |
Comite Europeen de Normalisation
|
| Status |
Current
|
| Standards | Relationship |
| ISO 6845:1989 | Identical |
| NBN EN ISO 6845 : 2003 | Identical |
| NF EN ISO 6845 : 2003 | Identical |
| NEN EN ISO 6845 : 2003 | Identical |
| NS EN ISO 6845 : 1ED 2003 | Identical |
| I.S. EN ISO 6845:2003 | Identical |
| PN EN ISO 6845 : 2004 | Identical |
| SN EN ISO 6845 : 2003 | Identical |
| UNI EN ISO 6845 : 2003 | Identical |
| UNE-EN ISO 6845:2003 | Identical |
| BS EN ISO 6845:2003 | Identical |
| DIN EN ISO 6845:2003-06 | Identical |
| ISO 607:1980 | Surface active agents and detergents Methods of sample division |
| ISO 385-1:1984 | Laboratory glassware — Burettes — Part 1: General requirements |
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