What does mean sulfur has auto-ignition Temperature 248-266C

In summary, auto-ignition temperature is the minimum temperature at which a substance will spontaneously ignite without an external source of ignition. Sulfur's auto-ignition temperature is significant because it indicates its ability to ignite without an external heat source, making it important for safety considerations. Compared to other substances, sulfur has a relatively high auto-ignition temperature of 248-266C. Several factors can affect sulfur's auto-ignition temperature, including purity, form, impurities, and atmospheric conditions. It is typically determined through laboratory testing by gradually heating the substance until ignition occurs.
  • #1
taregg
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0
same question.
 
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  • #2
"The Autoignition Temperature - or the minimum temperature required to ignite a gas or vapor in air without a spark or flame being present" ... see http://www.engineeringtoolbox.com/fuels-ignition-temperatures-d_171.html

That it has a range means that there are conditions other than temperature which matter. These will often be humidity related, either of the air, or the moisture content of the material.
 

1. What is auto-ignition temperature?

Auto-ignition temperature refers to the minimum temperature at which a substance will spontaneously ignite without an external source of ignition.

2. Why is sulfur's auto-ignition temperature significant?

Sulfur's auto-ignition temperature is significant because it indicates the temperature at which sulfur can ignite on its own, without the need for an external source of heat or flame. This can be important for safety considerations when handling sulfur.

3. How does sulfur's auto-ignition temperature compare to other substances?

Sulfur's auto-ignition temperature of 248-266C is relatively high compared to other substances. For example, gasoline has an auto-ignition temperature of about 246C, while paper has an auto-ignition temperature of only about 218C.

4. What factors can affect sulfur's auto-ignition temperature?

Several factors can affect sulfur's auto-ignition temperature, including the purity and form of the sulfur (solid, liquid, or gas), the presence of impurities, and the atmospheric conditions (such as oxygen levels).

5. How is sulfur's auto-ignition temperature determined?

Sulfur's auto-ignition temperature is typically determined through laboratory testing, where the substance is heated gradually until it ignites. The temperature at which ignition occurs is then recorded as the auto-ignition temperature.

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