Norm

NEN-EN 12139:1999 en

Oppervlakactieve stoffen - Bepaling van het totale gehalte aan polyetheenglycol van niet-iogene oppervlakactieve stoffen (EO-adducten) met HPLC/GPC

49,30

Over deze norm

Status Definitief
Aantal pagina's 13
Gepubliceerd op 01-03-1999
Taal Engels
Specifies a method for the determination of the total polyethlene glycol (PEG) content of aromatic and aliphatic nonionic surfactants of the type R-(O-C2H4)-OH,p is the mean ethylene oxide (EO) value to be determined if these substances are present in quantities of not less than approximately 0,1% by weight. The method detects all polyethylene glycol from diethylene flycol upwards. Monomeric ethylene glycol cannot be determined. The method is applicable up 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, e.g. tallow alcohol+ 5 EO, are not soluble, and require an amended preliminary treatment.

Details

ICS-code 71.100.40
Nederlandse titel Oppervlakactieve stoffen - Bepaling van het totale gehalte aan polyetheenglycol van niet-iogene oppervlakactieve stoffen (EO-adducten) met HPLC/GPC
Engelse titel 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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