I know the text book definitions:
Flashpoint is the temperature at which the vapors produced from a fluid will ignite (flash off) with the presence of an ignition source.
Firepoint is the temperature at which the fluid will sustain a fire if ignited by an outside ignition source.
Autoignition is the minimum temperature at which a substance must be heated to cause ignition without application of flame or spark.
I was interested in writing an algorithm for the relationship of the three - of at least two of the three - say Autoignition and Flashpoint but there seems to be more variables to tackle than I want.
Does anyone know if there is a simple, see Jane Run rule of thumb for the delta relationship between Autoignition and Flashpoint?
The following is a chart of some simple gases from CH3 to C12H26 I put together to get a visual. The algorithm is easy at STP with simple gases but more complex molecules - it gets whack.
Any ideas?
