Butane burns with air at 1970 degrees Celsius. Propane burns with air at 1980 decrees Celsius. Burning with an oxygen mix increases the temperature of a propane flame to 2820 degrees Celsius. However, keep in mind that if you are brazing/soldering, the object you are heating dissipates heat. Therefore, the temperature you can heat the object will be significantly less.
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The maximum adiabatic flame temperature a propane torch can achieve with air is 2268 kelvins (3623 °F / 1995 °C). The maximum adiabatic flame temperature a butane torch can achieve with air is 2243 kelvin (3578 °F / 1970 °C).
There is more to it than simply the temperature of the flame. The object being heated dissipates heat which lowers its temperature. In real terms, the torch is just capable of melting brazing rod (above 800 °F / 427 °C) and may melt copper (1984.32 °F / 1084.62 °C).
This can be improved if the gas is burned with oxygen. Some propane torches are also used with a tank of pure oxygen to achieve a flame temperature nearing 3095 kelvins (5110 °F / 2820 °C).
Source(s): http://en.wikipedia.org/wiki/Brazing
Butane gas burns at a temperature of around 1,980 degrees Celsius (3,600 degrees Fahrenheit) in a controlled environment with sufficient oxygen supply.
It depends on the flow rate (for lighters, Bunsen burners etc.) or surface area and concentration of the gas (for uncontained or uncontrolled combustion.)
Butane is a colorless, flammable gas at room temperature. It is commonly used as a fuel for lighters and camping stoves due to its ability to burn cleanly and easily.
Butane is a gas at room temperature and pressure.
Butane is found as a gas at room temperature and pressure, but can be stored in a liquid form under pressure. It is not found naturally as a solid.
When the liquid butane in a lighter is released, it is exposed to lower pressure and higher temperature in the surrounding environment. This causes the liquid to evaporate and turn into a gas. The gas form of butane is what is ignited to create a flame when using a lighter.
Yes, butane is a gas at 20 degrees Celsius. Its boiling point is -0.5 degrees Celsius, which means it will be in its gaseous state at room temperature.