Barium compounds are chemical substances that contain the element barium, which is a soft, silvery-white metal. These compounds are often used in various applications, including medical imaging, where barium sulfate is ingested or administered to help visualize the digestive system in X-rays. Barium compounds can also be found in fireworks, ceramics, and as pigments in paints. In addition to barium sulfate, other common barium compounds include barium chloride and barium nitrate. While some barium compounds are safe for use, others can be toxic and require careful handling. Proper safety measures are essential when working with these substances to prevent health risks.