Sb2S3, or antimony trisulfide, is a chemical compound composed of two atoms of antimony and three atoms of sulfur. It appears as a yellow to orange powder and is primarily used in the production of safety matches, fireworks, and as a pigment in paints. This compound is also known for its semiconductor properties, making it useful in various electronic applications. Additionally, Sb2S3 can be found in nature as the mineral stibnite, which is an important source of antimony. Its unique properties make it valuable in both industrial and scientific fields.