At what temperature does propane boil?

Propane boils at approximately -44°F (-42°C). This is significant because the boiling point of a substance is the temperature at which its vapor pressure equals atmospheric pressure, allowing it to change from a liquid to a gas. Knowing the boiling point of propane is critical in various applications, including heating, refrigeration, and even in engine fuels where propane is commonly used.

When operating under conditions where propane is subjected to temperatures above its boiling point, it will exist as a gas, making it useful for combustion and other energy applications. The other temperature options listed are above the actual boiling point of propane, which means that at those temperatures, propane would be in a gaseous state rather than a liquid. Therefore, the boiling point of propane being -44°F (-42°C) is essential knowledge for professionals working in areas involving this substance.