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Spectrophotometric extractive determination of thiolactams with 4-(2-pyridylazo)-resorcinol and copper

✍ Scribed by H. Sikorska-Tomicka; D. Popko

Publisher
Elsevier Science
Year
1984
Tongue
English
Weight
254 KB
Volume
29
Category
Article
ISSN
0026-265X

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✍ 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