Sodium p-toluenesulphonate

Into a 500-ml. bolt head or three-necked fiask, provided with a mechanical stirrer and a reflux condenser, place 60 g. (69 ml.) of thiophene-free toluene (Section 11,47,16) and 60 g. (33 ml.) of concentrated sulphuric acid. Heat the mixture, with stirring, in an oil bath maintained at 

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Method 2. The procedure described under Benzenesulphonyl Chloride, Method 2 (Section IV,206) may be used with suitable adjustment for the difierence in molecular weights between sodium p-toluenesulphonate (Section IV,30) and sodium benzenesulphonate. When the reaction product is poured on to ice, the p-toluenesulphonyl chloride separates as a sohd. This is filtered with suction it may be recrystaUised from hght petroleum (b.p. 40-60°) and then melts at 69°. 

Sodium p-toluenesulphonate [657-84-1 ] M 194.2. Dissolved in distilled water, filtered to remove insoluble impurities and evaporated to dryness. Then crystd from MeOH or EtOH, and dried at 110°. Its solubility in EtOH is not high (maximum 2.5%) so that Soxhlet extraction with EtOH may be preferable. Sodium p-toluenesulphonate has also been crystd from Et2O and dried under vacuum at 50°. 

Sodium p-toluenesulphinate, 821,826 Sodium p toluenesulphonate, 548, 550 Sodium triphenylmethide, 477,479 Solid carbon dioxide, see Dry Ice Solid solution, 32, 34 Solidus, 26, 33... 

Influence of polymerization conditions upon incorporation of flavin-containing polyanion. The amount of polyanion (1) incorporated as dopant in a PPy film during electropolymerization can easily be controlled by changing the ionic strength (low molar mass salt) and/or the pH of the monomer solution. The correlation between the amount of polymer-bound flavin incorporated in the film and the concentration of the added low molar mass salt, sodium-p-toluenesulphonate (NaOTs), at pH=7 is shown... 

An ElcB reaction or elimination from mono- or di-iodo intermediates are suggestions which have been proposed to account for the iodide-induced eliminations of toluenesulphonate esters of 1,2-diols in the carbohydrate, alicyclic and steroid fields. In the reaction of 1,2-ditosyloxy cyclohexanes with iodide ion, the rate of appearance of iodine is slower than that of sodium p-toluenesulphonate . This observation excludes a direct elimination reaction on the substrates and the following schemes were proposed (181). 

The free energy of transfer of alkylphenols and alkylphenoxides to cationic micelles has been measured. For the neutral parent compound SAGq = -5.680 kcal mol and for its anion 8AGo =-6.870 kcal moP. Incremental methyl substitution changes this value by —0.300 kcal moP in both cases and it was concluded that the environment of solubilized molecule and anion are very similar. The size of micelles can be quite subtly dependent on counterion however, since sodium p-toluenesulphonate and sodium p-toluate increase the viscosity of cetyltrimethylammonium bromide solutions sharply but sodium benzenesulphonate and disodium phenylphosphate do not. The anthra-quinone sulphonate (9) is absorbed very slowly ki = 0.37s by cationic micelles, the process being accelerated by added KBr. ... 

Sodium p-toluenesulphonate, (M.Wt. 194.19). Dissolve in water, filter, evaporate to dryness. Recryst. from ethanol. Dry at 110°C. 

Table 10.7 p-Toluenesulphonic acid, sodium p-toluenesulphonate buffer (25° C) ... 

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