From merck via erowid:
"mp 46 (fleming, woolias). bp 60-80. pKa 8.68 (ethanol-water)"
this concurs with my experience of the freebase, it softens quite readily at body temperature and liquifies at least as low as 50°C.
I would like to know where you got that 300 figure from. I have been unable to find any empirical data about dmt hcl's boiling point. seems to me that nobody measured it.
it does eventually solidify out of solvents, but it can take a damn long time. MeOH and DCM seem to be the best at doing this before christmas from what I read.
"Amine hydrochlorides does not have a boiling point, as they decompose way before reaching any such temperature (partly to the freebase, which then can boil if heated enough)."
Presumably once it reaches that decomposition point the freebase boils out very rapdily, since the temperature involved is well above the bp of the freebase.
the transformation must be efficient enough to be practical otherwise how would all these methheads be smoking. meth freebase is even more annoying, it is the HCl salt that people smoke afaik.
It would be very useful to explore dmt's physical properties more. Everyone seems to tip-toe around the subject like it's like reactive uranium or something. "nobody wants to know" they tell me. how can people know they don't want to know when they don't know what they're not knowing? It seems especially odd when dmt itself seems to evoke a vast unknown when ingested.