Green’s Dictionary of Slang

dynamite.

1902		Wash. Times (DC) 14 Sept. 10/3: Dan — Dynamite.
1909		F.H. Tillotson How I Became a Detective 91: Dine [...] Dan – Dynamite.
1926		J. Black You Can’t Win (2000) 96: From black powder he turned to dynamite and afterward was one of the first to ‘thrash out the soup’ — a process used by the bums and yeggs for extracting the explosive oil, nitro glycerine, from sticks of ‘dan’ or dynamite.
1944		C.B. Davis Rebellion of Leo McGuire (1953) 118: ‘Well, I reckon I’d better put in some more dan,’ and he slipped two more sections of dynamite into the soup.