DS DS/EN 12139 Surface active agents - Determination of the total polyethylene glycol content of non-ionic surface active agents (EO adducts) by HPLC/GPC
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DS DS/EN 12139 Document Information:
Title
Surface active agents - Determination of the total polyethylene glycol content of non-ionic surface active agents (EO adducts) by HPLC/GPC
Overfladeaktive stoffer. HPLC/GPC-bestemmelse af totalindhold af polyethylenglycol i ikke-ioniske overfladeaktive stoffer
Dansk Standard
Publication Date:
Jun 7, 1999
Scope:
This European standard specifies a method for the determination of the total polyethylene glycol content (PEG) of aromatic and aliphatic non-ionic surface active agents of the type R-(ethoxy)p*-OH, where p* is the mean ethylene oxide (EO) value. It applies for concentrations of PEG higher than approximately 0,1 g/100 g of the laboratory sample. The method is applicable up to a degree of ethoxylation of at least 25 for products which are soluble in mixture of methanol and water where the volume fractions are 80% and 20%. Long-chain products with a low degree of ethoxylation, such as tallow alcohol x 5 EO, are not soluble, and require an amended preliminary treatment.
Keywords:
- SURFACTANTS
- NON-IONIC SURFACTANTS
- CHEMICAL ANALYSIS
- DETERMINATION OF CONTENT
- POLYETHYLENE
- GLYCOL
- CONDENSATES
- CHROMATOGRAPHY
- HIGH PERFORMANCE LIQUID CHROMATOGRAPHY
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