Tin(II) oxide, also known as stannous oxide, is a chemical compound with the formula SnO. It consists of tin in the +2 oxidation state and oxygen. This compound appears as a white or light yellow powder and is used in various applications, including ceramics, glass, and as a pigment. In addition to its industrial uses, tin(II) oxide serves as a semiconductor and is utilized in the production of tin-based materials. It can also act as a reducing agent in chemical reactions. Its properties make it valuable in both manufacturing and research settings.