It may be surprising, but it is a pesticide.  It was EPA registered
pesticide 77705. It is still a pesticide, it is simply no longer legal to
use, as the registration has been revoked. Before it was used in beekeeping,
I think it was a generic insect repellent used in animal feed.


That's not a good EPA number  (I searched)


The bees can fan, and at some point, disperse the worst of the fumes, and
the bees, like the beekeeper, eventually seem to acclimate.  But why would
anyone leave any fume board on for more than a few minutes, at most?  

Lunch and cloudy cool days.  Horrible method for spring honey.



> Has the FDA approved or  declined the use of either of these processes 
> in
food prep?  

They have overtly not approved any "food use" for butyric anhydride.
Without an overt approval, it is forbidden.


MSDSes are so last decade. You want the new "SDSs" - Safety Data Sheets. But
google "MSDS" or "SDS" followed by the chemical name, and you'll get dozens.
The OSHA guys want you to get one from your actual suppliers, but for this
chemical, they are all copies of the original Kodak version.  (Yeah, Kodak -
they make the bulk of the Butyric Anhydride in the USA.  No idea why.)


Okay this last part of your has me completely baffled.   First you say if
its not approved,  its forbidden,  then you say you don't need approval???

As far as MSDS OR SDS,    you say your distilling it and its safe but want
me to check Kodak for their sheet?  That wont fly  the original MFG must
supply the sheet and info,  you know that.  So if your making it in your
warehouse from "food stuff"  (remember cherry pits can be processed into
cynide)  You have to provide and approved MSDS/ SDS sheet,  not pawn it off
on Kodak.   That excuse will never fly with OSHA should they push the
issue...

Charles

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