Linear alkylate sulfonate

See alkyl sulfonate linear molecule detergent sodium dodecylbenzene sulfonate. 

See biodegradability alkyl sulfonate, linear detergent alkylate (3). 

Estimates based on published and industry infomiation sources for production of linear alkyl (C 2) benzene alkylate sulfonic acid andlauryl-3 mol ethoxy... 

Detergents. The most widely used surfactant in synthetic detergents is the readily biodegradable linear alkyl sulfonate (LAS). Since the... 

Bhat et al. [199] used complexation with the bis(ethylenediamine) copper (II) cation as the basis of a method for estimating anionic surfactants in fresh estuarine and seawater samples. The complex is extracted into chloroform, and copper is measured spectrophotometrically in the extract using l,2(pyridyl azo)-2-naphthol. Using the same extraction system these workers were able to improve the detection limit of the method to 5 pg/1 (as linear alkyl sulfonic acid) in fresh estuarine and seawater samples. 

The application of collision-induced dissociation (CID(—)) to re-alkane- or linear (primary) alkyl sulfonates (PASs CraH2n+1-S03) or their isomers, the SASs with the modified formula CH3—(CH2)n— CIKSO3)—(CH2)X—CH3, and alkene sulfonates using FIA—MS—MS(—) conditions leads to only one, not quite specific, fragment ion at m/z 80,... 

The major uses of linear alkylbenzenes are in the manufacture of linear alkyl sulfonates, LAS, for laundry (70%), light duty dishwashing liquids (15%), industrial cleaners (12%), and household cleaners (3%). 

The molecular architecture and the chain length of the IPR greatly affect analyte retention enhancement. At constant eluent composition, log k of an analyte oppositely charged to the IPR raises linearly with the number of carbon atoms in the chain of the alkyl sulfonate [2,3]. The shorter the IPR side chain, the lower its adsorption onto the stationary phase. This involves a lower potential difference between the electrified stationary phase and bulk eluent that in turn results in a lower driving force for analyte retention [4-7]. To attain comparable retention, the effect played by a higher concentration of a less hydrophobic IPR is tantamount to that of a lower concentration of a more lipophilic IPR [8-10]. However, the relationship between adsorbophilicity and chain length of the IPR is only part of the story. 

Oligomers of glycine show little appreciable retention on octyl silica with 20 mM phosphate buffers over the pH range 2.10-7.83 (46), or on octadecyl silica with 100 mM phosphate buffer, pH 2.1 (33), or 5 mM phosphate buffers, pH 2.1, containing hydrophobic alkyl sulfonates (30). It is thus likely that the peptide chain proper makes only a very small contribution to the retention of peptides under these conditions. Based on partition coefficient considerations, oligomers of alanine, and the other nonpolar amino acids, should show a linear dependence of log A on the number of residues. This, in fact, has been observed. For example, the plot of log A versus the number of alanine residues shows (33) a linear dependence with a uniform log A increment due to the methyl group of the aliphatic side chain (Fig. 2), i.e., the effect is additive (45a, 46a). 

The linear alkyl sulfonates can be neutralized with aqueous solutions of base such as NaOH, KOH, NH4OH, or alkanolamines. The sodium salts are used in the formulation process to produce spray-dried determents... 

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