109480-39-9Relevant academic research and scientific papers
Monoazo yellow organic pigment and preparation method thereof
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Paragraph 0038-0048, (2021/02/06)
The invention discloses a monoazo yellow organic pigment as shown in a formula I. R1 and R2 are respectively and independently selected from H, OH, NO2, Cl, Br and C1-C4 alkyl, and m is a positive integer from 1 to 3, n is a positive integer from 1 to 3; Ar is that no sodium chloride or sodium hydrogen sulfate/sodium sulfate is generated in the process of preparing the monoazo yellow organic pigment, and the yield is higher than 96%.
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 (2007/10/03)
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
