Sternbachium was a solid backed explosive used in chemical laser ignition applications and gamma pulse generation. This explosive was activated by a high powered thermal pulse ignition device. SFRA 8334A and 43940 are applicable for all uses of this explosive. In 2367, this explosive was stored on aboard the Federation starship USS Enterprise-D.
In that year, Sternbachium was on a list of explosives that Lieutenant Commander Data and Counselor Deanna Troi searched through in an attempt to find one that could produce enough energy to release the USS Enterprise-D and an alien ship from the Tyken's Rift. (TNG: "Night Terrors")