UNI EN 12139 : 2001
Current
The latest, up-to-date edition.
SURFACE ACTIVE AGENTS - DETERMINATION OF THE TOTAL POLYETHYLENE GLYCOL CONTENT OF NON-IONIC SURFACE ACTIVE AGENTS (EO ADDUCTS) BY HPLC/GPC
28-02-2001
Defines a method for the determination of the total polyethylene glycol (PEG) content of aromatic and aliphatic non-ionic surface active agents of the type R-(O-C2H4)p-OH, where 'p' is the mean ethylene oxide (EO) value. Applicable for concentrations of PEG higher than approximately 0,1g/100g of the laboratory sample. Applicable to a degree of ethoxylation of at least 25 for products which are soluble in an 80/20 (V/V) mixture of methanol and water. Long-chain products with a low degree of ethoxylation, such as tallow alcohol 5 EO, are not soluble, and require an enamelled preliminary treatment.
| DocumentType |
Standard
|
| PublisherName |
Ente Nazionale Italiano di Unificazione (UNI)
|
| Status |
Current
|
| Standards | Relationship |
| NEN EN 12139 : 1999 | Identical |
| NF EN 12139 : 1999 | Identical |
| NS EN 12139 : 1ED 1999 | Identical |
| NBN EN 12139 : 1999 | Identical |
| SN EN 12139 : 1999 | Identical |
| BS EN 12139:1999 | Identical |
| EN 12139:1999 | Identical |
| UNE-EN 12139:1999 | Identical |
| I.S. EN 12139:1999 | Identical |
| DIN EN 12139:1999-04 | Identical |
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