Study the effect of changing positions on some of the spectral properties of the new Azo dye [sodium (E)-7-amino-3-((2-(hydrogenarsonato) phenyl) diazenyl)-3-hydroxynaphthalene -1-sulfonate] and compare it with other Azo dye prepared in advance [sodium (Z)-4-amino-2-((2-(hydrogenarsonato) phenyl) diazenyl)-4-hydroxynaphthalene -2-sulfonate]. University of Thi-Qar Journal of Science, [S. l.], v. 6, n. 2, p. 52–60, 2017. DOI: 10.32792/utq/utjsci/v6i2.87. Disponível em: https://jsci.utq.edu.iq/index.php/main/article/view/87.. Acesso em: 22 jul. 2024.