3 ms·

Maybe butane?

• LeifCarrotson 9mo ago
  Butane stops vaporizing at -1C (31F), isobutane at about -10C (10F). Propane's boiling point is even better, at about -40C/-40F, but it self-cools and doesn't develop the required pressures to run a torch. I know this because my otherwise dependable camp stove is a 3-season affair. For winter camping, you basically need a white gas system (liquid fueled, manually pressurized or gravity fed). I suppose I'd reach for an acetylene torch in a cold workshop.
  • mapt 9mo ago
    You're right. I misinterpreted my little butane torch's apparent high pressure in relation to my big propane torch. Canned ethane or ethyne ("acetylene") then.