This is potentially dangerous, it may end disastrously (8)
I believe the answer is:
dynamite
'this is potentially dangerous' is the definition.
The definition suggests a singular noun which matches the answer.
'it may end disastrously' is the wordplay.
'disastrously' indicates anagramming the letters (I've seen this in other clues).
'it'+'may'+'end'='itmayend'
'itmayend' anagrammed gives 'DYNAMITE'.
Can you help me to learn more?
(Other definitions for dynamite that I've seen before include "Nobel's invention" , "Nitroglycerine explosive" , "A1" , "High explosive" , "Jelly" .)