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Extraction of copper(II)-4-(2-pyridylazo)resorcinol complexes by tetraphenylphosphonium and arsonium chloride

✍ Scribed by Lj. Marić; M. Široki; M.J. Herak

Book ID
115973743
Publisher
Elsevier Science
Year
1975
Weight
178 KB
Volume
37
Category
Article
ISSN
0022-1902

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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. Marić; M. Široki 📂 Article 📅 1996 🏛 Elsevier Science 🌐 English ⚖ 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