Walkerite 342
Walkerite 342 was a gaseous explosive used in fire suppression applications and thermal pulse generation. It could also be used in portable gamma pulse ignition devices, except for those intended for use in high-radiation environments. SFRA 3907A was applicable for all uses of this explosive. In 2367, this explosive was stored on aboard the Federation starship .
 
In that year, Walkerite 342 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  and an alien ship from the Tyken's Rift. ()

Chemical compounds
Explosives