The nitrovanillin azine (NA) has been successfully synthesized and examined as a colorimetric chemosensor for sulfide anion detection. NA was using two steps reaction. Vanillin reacted with concentrated nitric acid to form 5-nitrovanillin (NV) then the NV condensed hydrazine hydrate produce NA. obtained fully elucidated by FTIR, 1H-NMR, 13C-NMR, GC-MS spectrometer. activity anionic carried out ...
