title: Electronic spectral parameters of the azo indicators: methyl red, methyl orange, PAN, and fast black K-salt.
abstract: The electronic absorption spectra of some azo indicators (methyl red, methyl orange, PAN, and fast black K-salt) were taken in different solvents with different physical properties in order to study the solvent-solute interaction. The parameters used depend on the solvent dielectric constant and refractive index. The data are analyzed based on multiple regression technique.
authors.affiliation: Chemistry Department, Faculty of Science, Alexandria University, Egypt.
authors.forename: M S
authors.initials: MS
authors.lastname: Masoud
authors.forename: H H
authors.initials: HH
authors.lastname: Hammud
mesh_terms: D001391:Azo Compounds / Q000737:chemistry*; D003979:Diazonium Compounds / Q000737:chemistry*; D015394:Molecular Structure; D012044:Regression Analysis; D012997:Solvents; D013053:Spectrophotometry
chemical_list: D001391:Azo Compounds; D003979:Diazonium Compounds; D012997:Solvents; C056237:Fast Black K Salt; C008492:methyl red; C100258:methyl orange