A new stilbazolium derivative salt 2-[2-(4-Ethoxy-phenyl)-vinyl]-1-ethyl-stilbazolium iodide havebeen successfully synthesized and purified by repeated recrystallization process. Single crystals of EESI havebeen grown by the slow evaporation solution growth method at room temperature by using methanolacetonitrilemixed solvent. The crystal system and cell parameters have been confirmed by single crystal XRDanalysis. The crystallinity of grown crystal has been identified by powder X-ray diffraction analysis. Themolecular structure of EESI was confirmed by 1H NMR spectral studies. The UV-Vis-NIR optical absorptionstudy reveals that the grown crystals have transmitting ability in the entire visible region. The luminescenceproperty of the EESI was investigated by using spectrophotometer.