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The nanoparticles (Nps) of tin disulfide (SnS₂) are synthesized by sonochemical route. The Nps are characterized by dispersive analysis of X-ray energy (EDAX) and X-ray photoelectron spectroscopy (XPS) to get the chemical composition. The diffraction of X-ray (XRD) is used for determination of phase and crystal structure. The as-synthesized Nps are polycrystalline and possess hexagonal structure. The surface morphology of the as-synthesized Nps is examined by electron microscopy in scanning (SEM) and high-resolution transmission modes. The residual sample after the thermal analysis is characterized by EDAX, XPS, XRD, SEM and Fourier transformed infra-red spectroscopy. The obtained results of the post-thermal analyzed and as-synthesized SnS₂ Nps samples are compared. The thermal analysis of the Nps is carried out by recording the thermogravimetric and differential thermogravimetric curves …