✦ LIBER ✦

Spectrophotometric determination of anionic micellar binding constants of ionized and non-ionized phenyl and methyl salicylates

✍ Scribed by M. Niyaz Khan

Publisher: John Wiley and Sons
Year: 1996
Tongue: English
Weight: 399 KB
Volume: 9
Category: Article
ISSN: 0894-3230
DOI: 10.1002/(sici)1099-1395(199605)9:5<295::aid-poc774>3.0.co;2-r

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✦ Synopsis

The ionized (S-) and non-ionized (SH) phenyl (PSH) and methyl (MSH) salicylates exhibit strong and undetectable absorption at 350 nm, respectively. These molecular absorption properties were used to determine the binding constants of S-and SH with the micelles of sodium dodecyl sulphate in terms of the pseudophase model of micelles. The binding constants (K ) of S -are 4.0 f 2.0 dm' mol -' for PSH and 5.7 f 1-2 dm3 mol-' for MSH and those (K2) of SH are 2350 f 90 dm mol-' for PSH and 100 f 10 dm3 mol-' for MSH at 30 "C.

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