Used in the production of bismuth metal and its alloys, which have low melting points and are utilized in fire detection and suppression systems.

Employed in cosmetics for its pearlescent effect, especially in eye shadows, nail polishes, and lipsticks, due to its ability to reflect light.

Acts as a pigment in specialty paints, coatings, ceramics, and glass, providing dark gray to black colors with good thermal stability.

Used in thermoelectric materials and electronics because of its semiconductor properties, contributing to devices that convert heat into electricity, sensors, and photoconductors.

Found in certain types of lubricants and greases for high-temperature applications, where it forms protective films on metal surfaces.

Investigated for use in environmental remediation, particularly in removing heavy metals from contaminated water due to its adsorption and ion-exchange characteristics.