This time I checked, the only data I found supporting my earlier claim is in the Safrole FAQ at my page ( https://www.thevespiary.org/rhodium/Rhodium/chemistry/safrolefaq.txt (https://www.thevespiary.org/rhodium/Rhodium/chemistry/safrolefaq.txt)
), the bp is mentioned more than once, first in the vicinity of its Beilstein reference, (which I can't read, Beilstein is is the most expensive form of steganography ever invented), and once near a ref to an old american chem journal (which I don't have access to). Osmium, could you please check Beilstein "19(3), 273", "19(4), 273" and "19 1, V, p 553" as those are the three beilstein references on isosafrole I've managed to dig up tonight, at least you know the language they have encrypted the encyclopedia with.
The Merck monograph says the trans isomer has bp760 253°C, bp100 179.5°C, bp20 135.6°C, bp3.4 85-86°C, and the cis isomer bp3.5 77-79°C.
Now I wonder which one is correct. Merck has been wrong before (I spotted 11 errors in the 12th edition, not counting spelling mistakes), and probably not too many chemists write to Merck and complain about their List I substance "boils 6-7°C too low".
I couldn't find any bp data in the TCI, Acros or Sigma-Aldrich catalogs either, as all of the companies which actually stock isosafrole only have an unspecified mixture of both isomers. An interesting thing to note is that TCI of Japan list isosafrole's flash point as 92°C, while Acros of Belgium list it at 110°C and Sigma-Aldrich (US) lists it as >230°F (>110°C). If it were only the latter two measurements I would buy the reasoning, but a 20°C difference between the hemispheres is a bit too much in my opinion to be trustworthy. Who burns isosafrole on purpose by the way, just to be able to jot down its flash point? At least Sigma-Aldrich has sense enough to write boiling range 77-86°C/3.5mmHg for their 97% pure cis/trans mixture, as that is the boiling point extremes for a mixture of the isomers.
I found something amusing while on the net too. Don't try this at home! "Schizophrenia-like psychosis" is not synonymous with tripping your ass off!
Isosafrole and schizophrenia-like psychosis
American Journal of Psychiatry, 141(8), pp 997-998 (1984)
Abstract A 19-year-old man developed a schizophrenia-like psychosis after ingesting isosafrole. His use of amphetamines and LSD failed to produce a similar syndrome. Isosafrole may provide another biochemical model for schizophrenia.
http://ajp.psychiatryonline.org/cgi/content/abstract/141/8/997 (http://ajp.psychiatryonline.org/cgi/content/abstract/141/8/997)
I just felt a link to the following post would be pertinent in this open-ended thread: Post 385627 (https://www.thevespiary.org/talk/index.php?topic=11211.msg38562700#msg38562700)
(Rhodium: "Isosafrole Physical data", Newbee Forum)