2-PHASE TITRATION OF DIALKYL DITHIOPHOSPHORIC ACIDS BASED ON THEIR ION-PAIR EXTRACTION

Authors
GARIFZYANOV AR TELNOVA ZA SAVELEVA NI TOROPOVA VF BUDNIKOV GK
Citation
Ar. Garifzyanov et al., 2-PHASE TITRATION OF DIALKYL DITHIOPHOSPHORIC ACIDS BASED ON THEIR ION-PAIR EXTRACTION, Journal of analytical chemistry, 53(4), 1998, pp. 368-371
Citations number
5
Categorie Soggetti
Chemistry Analytical
Journal title
Journal of analytical chemistry → ACNP
ISSN journal
10619348
Volume
53
Issue
4
Year of publication
1998
Pages
368 - 371
Database
ISI
SICI code
1061-9348(1998)53:4<368:2TODDA>2.0.ZU;2-V
Abstract
The distribution of ion pairs formed by a number of O,O-dialkyl dithio phosphoric acids and decylpyridinium (DP) in a water-chloroform two-ph ase system was studied. Extraction constants (K-DP) were determined. A linear correlation between logK(DP) and steric and hydrophobic consta nts of substituents at the phosphorus atom was found. Two-phase potent iometric titration can be applied to the selective determination of di thiophosphoric acids.