91136-21-9Relevant articles and documents
Dissociation constants of substituted aryl azo barbituric and thiobarbituric acids
Masoud, Mamdouh S.,Ghonaim, Ahmed K.,Ahmed, Rabah H.,Mahmoud, Ahmed A.,Ali, Alaa E.
, p. 531 - 542 (2001)
The acid dissociation constants of 5-(substituted phenylazo) barbituric and thiobarbituric acids were determined in aqueous media and in 25%-75% (v/v) ethanol-water and dioxanewater mixtures potentiometrically in the temperature range 25-40°C, in presence