oh yeah, another odd and interesting thing about water and gas solubility, is that water that has had the air driven out of it by boiling, increases its soap-like properties and notably can be used to make suspensions of oily substances in water. i think the substance has to be liquid or at least viscous and liquidy at room temperature for this to work (as the floating layer will cool down faster and aggregate at the top if it is solid at the temperature).
i remember seeing some science news story about this back around 1998 or so. not sure if or where this trick is used to make oily drug substances injectable but it can do this. could also be used to make an oily substance work as a nasal spray. the movie Nirvana (italian cyberpunk starring Christopher Lambert) features him ingesting "liquid marijuana" through a speculum looking injecty device that sprays it up his nose.