Nonylphenols reference compounds

Linear alkylbenzenesulfonates (LAS), alcohol ethoxylates (AEO), and nonylphenol ethoxylates (NPEO) are synthetic surfactants used in the formulation of detergents and other cleaning products and are widely applied in the dye and leather industry and other industrial processes. These compounds, considered as estrogenic, have aroused considerable interest due to the large quantities produced globally. Their low volatility and anionic form make LC-based methods the preferred approach [7]. Due to the presence of different positional isomers, to the biodegradation intermediates, and to the lack of reference standards, LC-MS, and in particular with ESI, is the only technique which enables their identification and quantification in environmental waters. 

SDDBS and AOT denote the anionic surfactants sodium dodecyl-benzenesulfonate and sodium dioctyl-sulfosuccinate, respectively. Triton X-100 is the nonionic surfactant nonylphenol decafethylene-glycolether). Compound 1 is a mixture of sihcone oil and hydropho-bized silica Compound 2 is an emulsion of Compound 1, which contains also solid particles of Span 60. Data from References 684 and 687. 

A product having a different use, namely as the oxime in the extraction of copper(ll) from dilute aqueous solution, is derived by the nucleophilic reaction of 4-nonylphenol, behaving as the 2-carbanion, with benzotrichloride in the presence of sodium hydroxide solution, to afford after hydrolysis of the intermediatedichlorocompound, 2-hydroxy-5-nonylbenzophenone (ref.54). The oxime of this compound is similar in properties to the 5-dodecyl analogue known as Ux 64N (Henkel Co.). The Acorga series of metal extractants derived from2-hydroxy-5-nonylsalicylaldehyde are more commercialy significant and are referred to later. 

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