- Star Trek: The Motion Picture
- Star Trek II: The Wrath of Khan
- Star Trek III: The Search for Spock
- Star Trek IV: The Voyage Home
- Star Trek V: The Final Frontier
- Star Trek VI: The Undiscovered Country
- Star Trek Generations
Volatile gaseous element. Tetrazine was found in the atmospher of the Paraagan mining colony planet. Enterprise's shuttle plasma exhaust appeared to ignite the tetrazine in the atmosphere, destroying the colony and colonists. Further investigation revealed that the Suliban were actually responsible.