Polyoxyethylenated fatty acids

Commercial polyoxyethylene fatty acid esters contain varying proportions of monoesters,... 

Carboxylic Amides. Carboxylic amide nonionic surfactants are condensation products of fatty adds and hydroxyalkyl amines. They include diethanolamine condensates, monoalkanolamine condensates, and polyoxyethylene fatty acid amides. 

Polyoxyethylene fatty acid esters are produced by the reaction of polyethylene glycols with fatty adds. The commercial products are waxy solids which include Carbowax 4000 (Mono) Stearate. Some of the products act as plasticizers and lubricants for plastics. The polyethylene glycols are soluble in water. 

Myrj Series Polyoxyethylene fatty acid esters... 

Name Polyoxyethylene fatty acid ester Sample preparation Capillary film, sodium chloride cell... 

Surfactants (surface active agents) are very important constituents of many industrial formulations. In these formulations, it is often not just one compound that is of interest. Rather, the overall identity, as determined by the presence and distribution of the individual components, is critical. Kondoh et al. [224] developed a method for determining non-ionic surfactants containing ester groups, such as sorbitan and sucrose fatty acid esters and polyoxyethylene fatty acid esters, as their o-nitro-phenylhydrazine derivatives. To remove the residual free fatty acid fraction, 6 mM triethylamine (TEA) was added to the 85/15 methanol/water starting mobile phase. The free fatty acids then eluted in the void volume and the separation of the analytes of interest was conducted on a C]g column (A = 550 nm). Elution and identification up to the penta-ester resulted when a 50-min 0/85/1575/25/0 ethanol/ methanol/water (6 mM TEA) gradient was used. 

Chem. Descrip. Polyoxyethylene fatty acid methylester Ionic Nature Nonionic Uses Emulsifier detergent Properties Liq. 92% cone. 

Novasomes Monoester of polyoxyethylene fatty acids, cholesterol and free fatty acids. Two to seven bilayer shells High loading capacity... 

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