ISSN 0005-2531 (Print) ISSN 2522-1841 (Online)
EXTRACTION-PHOTOMETRIC STUDY OF THE TUNGSTEN(V)–o-HYDROXY-5-BROMOTHIOPHENOL–AMINOPHENOL SYSTEM
N.A.Verdizade, A.Z.Zalov, A.B.Hajieva

 

2-Hydroxy-5-bromthiophenol forms with tungsten colorized complex insoluble in non-polar organic solvents. At introducing aminophenol in the system extraction of  this compounds by organic phase with the formation of different ligand complex is observed. Among aminophenols 2-(N,N-diethylaminomethyltio)-4-metoxyphenol, 2-(N,N-dibutilaminomethylthio)-4-metoxyphenol were used. The maximum degree of extracting different ligand complexes is observed at pH 4.5–6.2. Maximal light absorption of complexes is observed  at 470–480 nm. The molar coefficients of absorption fluctuate  at  interval (3.7–3.9)·104.  

 

Keywords : complex formation, extraction, tungsten, 2-hydroxy-5-bromothiophenol, Beer`s law
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THE LAST NUMBER OF THE JOURNAL
№3 2022
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