AB 201-300

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AB-230 Titrimetric/potentiometric determination of nonionic surfactants based on polyoxyethylene adducts using the NIO electrode  
Titrimetric/potentiometric determination of nonionic surfactants based on polyoxyethylene adducts using the NIO electrode

This Bulletin describes the titrimetric determination of nonionic surfactants based on polyoxyethylene adducts (POE adducts). The determination is based on the conversion of the nonionic surfactant into a pseudo-cationic compound, which is determined in a precipitation titration using sodium tetraphenylborate (NaTPB). A newly developed surfactant electrode, the NIO electrode, is used as the indicator electrode. It has been designed taking into account the characteristics of this titration and therefore yields reliable, fast and efficient determinations. This Bulletin covers determinations in raw materials, formulations and wastewater. Characteristics, possibilities, limitations and interferences are pointed out.


German:  AB_230_1_d.pdf (259 KB)
English:  AB_230_1_e.pdf (252 KB)
French:  AB_230_1_f.pdf (256 KB)

Industry
Detergents, Surfactants and Cosmetics > Detergents
Organic Chemistry
Textiles, Leather and Ceramics
 
Methods
Titration > Potentiometric titration > Surfactant titration
   Titrimetric/potentiometric determination of nonionic surfactants based on polyoxyethylene adducts using the NIO electrode