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The extraction-photometric determination of cadmium and cobalt with 4-(2-thiazolylazo)-resorcinol and 1-(2-thiazolylazo)-naphthol

✍ Scribed by O. Navratil; R.W. Frei

Publisher
Elsevier Science
Year
1970
Tongue
English
Weight
373 KB
Volume
52
Category
Article
ISSN
0003-2670

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Extraction of 4-(2-pyridylazo) resorcino
Extraction of 4-(2-pyridylazo) resorcinol and 4-(2-thiazolylazo) resorcinol with chloroform and tetraphenylarsonium and phosphonium chlorides
✍ Lj. MariΔ‡; M. Ε iroki πŸ“‚ Article πŸ“… 1996 πŸ› Elsevier Science 🌐 English βš– 792 KB

The extraction of 4-(2-pyridylazohesorcinol (PAR) and 4-(2-thiazolylazo)resorcinol (TAR) with chloroform alone and in the presence of tetraphenylarsonium or tetraphenylphosphonium chloride (Ph,XCl) was studied. In the optimum pH range 3.5-5 for PAR and 1.5-5 for TAR, 94-95% of the reagents was extra