Sulfur itself doesn't "burn" in the way we usually think of it. It combines with oxygen in a process called combustion, which releases heat and light.

The temperature at which sulfur combusts depends on the form of sulfur and the conditions, but it's generally around 260°C (500°F).

Here's a more detailed explanation:

* Sulfur's combustion: Sulfur reacts with oxygen to form sulfur dioxide (SO2), a gas. This reaction is exothermic, meaning it releases heat.

* Ignition temperature: The ignition temperature is the minimum temperature at which a substance will ignite and sustain combustion. For sulfur, this is around 260°C (500°F).

* Factors affecting combustion temperature: The actual temperature of the flame depends on various factors:

* Form of sulfur: Powdered sulfur burns more readily than solid chunks.

* Oxygen concentration: More oxygen leads to a hotter flame.

* Airflow: Proper airflow ensures efficient combustion.

It's important to note that sulfur combustion produces sulfur dioxide (SO2), a harmful gas that contributes to air pollution and acid rain.