... Then they got really smart. Certain chemical processes can "bend" (not a precise scientific term here folks, but close enough) the butane molecule into what's called an isomer. The isomer has the same chemical formula (C4H10), but it's different geometry gives it different properties, one property is that the point at which it vaporizes goes from 31F to 11F.
Very interesting, thanks! I assume this is what's referred to as isobutane?
Also, if propane vaporizes down to -44F, why not fill the canister 100% with propane, and forget about the butane completely?
