3.4- Dimethylbenzene sulfonic

FIGURE 18 Chromatographic identification of tabiet press contaminant. Coiumn 4x250 mm OmniPac PAX-i00. Eiuent i mM disodium phosphate in 40% methanoi. Fiow rate i mLmin. Injection voiume lOpL. Detection UV at 220nm. Ion I—dimethylbenzene sulfonate. 

Benzenesulfonic acid, dimethyl- Dimethylbenzene-sulfonic acid EINECS 246-839-8 Xylene sulfonic acid Xylenesulphonic acid. Mixture of 0, m and p-isomers. 

Sodium dichromate (Sodium dimethylbenzene sulfonate) see Xylenesulfonic acid sodium salt 10588-01-9 Xi Sensitization, Cancer... 

It is important to add the caveat that these results were reported well before the advent of modem spectroscopic techniques for structural elucidation and accordingly the precise orientation of sulfonation in several cases remains uncertain. The results provide some evidence indicating that the combined directive effect of two alkyl groups appears to be greater than that of two similarly orientated halogen atoms. Thus in 2,4-dichloro-l,3-dimethylbenzene, sulfonation occurs in the 6-position which is oip with respect to the methyl groups rather than the 5-position oip to the chlorine atoms). 

Dimethylbenzenesulfonic acid. See Xylene sulfonic acid Dimethylbenzene sulfonic acid, sodium saH. See Sodium xylenesulfonate Dimethyl benzyl hydrogenated tallow ammonium chloride. See Hydrogenated tallowalkonium chloride... 

Synonyms Dimethylbenzene sulfonic acid, sodium salt Sodium dimethylbenzene-sulfonate SXS Xylenesulfonic acid, sodium salt Defin ition Sodium salt of ring sulfonated mixed xylene isomers Ionic Nature Anionic Empirical CgHgOjS Na Formula (CH3)2CgH3S03Na... 

Heating 4-nitro-l,3-dimethylbenzene 94 with chlorosulfonic acid (two equivalents) yields the expected 5-nitro-2,4-dimethylbenzenesulfonyl chloride 95 in which sulfonation has occurred o/p with respect to the electron-donating methyl groups (Equation 30). ... 

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