Does the heat and boiling of the vaping process turn an HCl salt into freebase?
I believe it does, and would assume so - at least, this is what I've gleaned over the years reading from others who have. Which doesn't mean it's as caustic though, since you're inhaling both the hcl and other pyrolytic by-products along with the hydrophobic alkaline amp, and for all I know it aerosols better with all that. There's obviously little (possibly none) actual scientific literature on it though, unlike with vaped meth.