Is propane is flammable?
Propane can be flammable when mixed with air (oxygen) and can be ignited by many sources, including open flames, smoking materials, electrical sparks and static electricity. However, propane won't ignite when combined with air unless the source of ignition reaches at least 940 degrees Fahrenheit.
Flame temperatures of common gases and fuels
|Gas / Fuels||Flame temperature|
|Hydrogen in air||2111 °C 3831 °F|
|Propane with oxygen||2800 °C 5072 °F|
|Acetylene in oxygen||3100 °C + 5612 °F|
|Propane-butane mix with air||1970 °C 3578 °F|
- Designed to work with propane hand torches, Bernzomatic 14.1 oz. propane-filled cylinders are ideal for small soldering and heating jobs. The slim, lightweight cylinder is easy to grip and maneuver. Flame temperature in air is 3,600 degrees Fahrenheit.
- Color also tells us about the temperature of a candle flame. The inner core of the candle flame is light blue, with a temperature of around 1800 K (1500 °C). That is the hottest part of the flame. The color inside the flame becomes yellow, orange, and finally red.
- FACT: Jet fuel burns at 800° to 1500°F, not hot enough to melt steel (2750°F). However, experts agree that for the towers to collapse, their steel frames didn't need to melt, they just had to lose some of their structural strength—and that required exposure to much less heat.
LPG is mostly propane and butane both of which have adiabatic flame temperature near 1970 degrees C when burned in air. See Flame Temperatures of some Common Gases. So 300-400 degrees C is certainly reachable.
- Normally, the gas is stored in liquid form under pressure in a steel container, cylinder or tank. The pressure inside the container will depend on the type of LPG (commercial butane or commercial propane) and the outside temperature.
- Combustion of acetylene with oxygen produces a flame of over 3,600 K (3,330 °C; 6,020 °F), releasing 11.8 kJ/g. Oxyacetylene is the hottest burning common fuel gas. Acetylene is the third-hottest natural chemical flame after dicyanoacetylene's 5,260 K (4,990 °C; 9,010 °F) and cyanogen at 4,798 K (4,525 °C; 8,177 °F).
- "The most commonly known flammable liquid is gasoline. It has a flash point of about -50° F (-65° C). The ignition temperature is about 495° F (232(232° C) [sic], a comparatively low figure."
Updated: 6th December 2019