Spectrophotometric study of the reaction of molybdenum(VI) with 4- galloylpyrogallol

Journal Article · Wed Aug 01 00:00:00 EDT 1973 · Rev. Chim. (Bucharest), v. 24, no. 8, pp. 635-638

OSTI ID:4411104

Popa, G; Dumitrescu, V; Dumitrescu, N; Gaivoronschi, B

A spectrophotometric stydy was made of the reaction of Mo(VI) with 4- galloylpyrogallol (2.3,4,-3; 3; 4'5'-hexahydroxy benzophenone) in aqueous solution. The reactnt forms with Mo(VI) a yellow complex in acid medium (pH = 5.75 - 6.15). At an optimum pH of 5.6 and a wave length of 420 nm, Mo(VI) can be determined between the concentration limits of 1-20 mu g/cm/sup 3/. The molar extinction coefficient is 14554. The instability constant obtained by the method of the Job non-isomolar series is 2.42 x 10, and the combination ratio molybdenum/ reactant is 1/2. (auth)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-29-009814
• OSTI ID: 4411104
• Journal Information: Rev. Chim. (Bucharest), v. 24, no. 8, pp. 635-638, Journal Name: Rev. Chim. (Bucharest), v. 24, no. 8, pp. 635-638; ISSN RCBUA
• Country of Publication: Country unknown/Code not available
• Language: Rumanian

Related Subjects

*MOLYBDENUM-- SPECTROPHOTOMETRY
AQUEOUS SOLUTIONS
CHEMICAL REACTIONS
MOLYBDENUM COMPLEXES
N40120* --Chemistry--Analytical & Separations Chemistry-- Chemical & Spectral Procedures
PH VALUE
PYROGALLOL