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]. UTJsci [Internet]. 2017 Jun. 27 [cited 2024 Dec. 26];6(2):52-60. Available from: http://mail.jsci.utq.edu.iq/index.php/main/article/view/87