T. K. Barman, B. C. Paul, K. Ismail
Dec 1, 1994
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0
Influential Citations
2
Citations
Journal
Bulletin of the Chemical Society of Japan
Abstract
Visible absorption spectra of Methyl Red in buffered benzene–water microemulsions (MEs) stabilized by sodium dodecyl sulfate and 1-butanol were recorded at 25 °C and at various pH values. Three compositions of the ME were used with R = 24, 32, and 48 where R is the water (aqueous buffer)-to-surfactant molar ratio. pKaof Methyl Red is found to be 6.12, 6.38, and 6.6 in MEs of R = 24, 32, and 48, respectively. The effective dielectric constant of the ME is estimated to be about 45 ± 3.