NF EN 12139 : 1999
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
12-01-2013
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.
| DevelopmentNote |
INDICE DE CLASSEMENT T73274 REPLACES NFT 73-274
|
| DocumentType |
Standard
|
| PublisherName |
Association Francaise de Normalisation
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| Status |
Current
|
| Supersedes |
| Standards | Relationship |
| EN 12139:1999 | Identical |
| BS EN 12139:1999 | Identical |
| UNE-EN 12139:1999 | Identical |
| ISO 2268:1972 | Similar to |
| UNI EN 12139 : 2001 | Identical |
| DIN EN 12139:1999-04 | Identical |
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