I know the subject of shipping fuel has been touched on before, but I have the following legal question on mailing Coleman Fuel:
USPS Publication 52 says what hazardous substances can be shipped, and how. It says that you can generally ship a flammable liquid if the substance has a flashpoint (that's where the vapors ignite) is over 20 degrees F. You have to label it and package it properly, but you can ship it surface mail. Denatured alcohol and methanol qualify.
Different standards apply to canisters of fuel; they can be shipped, too.
But as I read it, Coleman fuel should not be mailable because its flashpoint is too low. Sources on the Internet say its flashpoint is around -27 degrees F. Still, REI will sell it and ship it to you. So they must know something, right?
Anyone know how REI gets by with it? Do they have a special permit or can a private individual do it, too?