[loginprakash]

What happen if i have to heat a reagent over its flash point, by taking it in a higher boiling solvent?

[fledarmus]

In the spirit of Socratic learning, can you define the flash point of a material? What risks does this suggest to you?

[loginprakash]

It is the temperature at which a chemical substance immolate itself on exposure to an igniting source.( spark, flame, and others which i dont know.)

[discodermolide]

It is the temperature at which a chemical substance immolate itself on exposure to an igniting source.( spark, flame, and others which i dont know.)

Correct, so do not heat over the flash point.

[DrCMS]

It is the temperature at which a chemical substance immolate itself on exposure to an igniting source.( spark, flame, and others which i dont know.)

Correct, so do not heat over the flash point.

As someone who says they are a development chemist are you really telling me you have never used a solvent in a reaction at a temperature above it's flash point?

[discodermolide]

It is the temperature at which a chemical substance immolate itself on exposure to an igniting source.( spark, flame, and others which i dont know.)

Correct, so do not heat over the flash point.

As someone who says they are a development chemist are you really telling me you have never used a solvent in a reaction at a temperature above it's flash point?

Of course I have but everything is explosion proofed, so no sparks etc. No electrostatic discharges.

[superg]

It is the temperature at which a chemical substance immolate itself on exposure to an igniting source.( spark, flame, and others which i dont know.)

Correct, so do not heat over the flash point.

As someone who says they are a development chemist are you really telling me you have never used a solvent in a reaction at a temperature above it's flash point?

Of course I have but everything is explosion proofed, so no sparks etc. No electrostatic discharges.

lot of common organic solvent are already above their flash point at room temp (ether, THF, acetone, ethylacetate...), people tend to forgot that!
clorinated solvents (DCM and chloroform) don't have any FP, so quite safe in that aspect.

[DrCMS]

It is the temperature at which a chemical substance immolate itself on exposure to an igniting source.( spark, flame, and others which i dont know.)

Correct, so do not heat over the flash point.

As someone who says they are a development chemist are you really telling me you have never used a solvent in a reaction at a temperature above it's flash point?

Of course I have but everything is explosion proofed, so no sparks etc. No electrostatic discharges.

So your answer is actually sure heat it above it's flash point as long as you ensure there are no ignition sources and ideally also do it under and inert gas.

As superg has pointed out a lot of the solvents people use all the time have flash points below room/lab temperature.

[discodermolide]

It is the temperature at which a chemical substance immolate itself on exposure to an igniting source.( spark, flame, and others which i dont know.)

Correct, so do not heat over the flash point.

As someone who says they are a development chemist are you really telling me you have never used a solvent in a reaction at a temperature above it's flash point?

Of course I have but everything is explosion proofed, so no sparks etc. No electrostatic discharges.

So your answer is actually sure heat it above it's flash point as long as you ensure there are no ignition sources and ideally also do it under and inert gas.

Yes, I thought that may have been obvious?

[DrCMS]

@ discodermolide without all the nested quotes
The OP asked about heating something above it's flash point.  You told them not to do that.  What you meant was to not do that without taking precautions to remove ignition sources and work under an inert atmosphere.   The first answer is limited and the second one is better; it is not obvious to the OP otherwise they would not have asked the question in the first place.

[fledarmus]

Just to generalize the previous posters' advice...

Yes, you can run reactions using materials above their flash point, but you have to be careful to avoid any sources of ignition (sparks or flames), and it is even better if you can do it in an inert atmosphere to remove oxygen as well. Without a source of ignition or oxygen, materials will not ignite even at or above their flash point.

The other temperature you have to be aware of is the autoignition temperature. At this temperature, the material will spontaneously combust, without the need of an ignition source. Try not to approach this temperature. If you absolutely have to heat something that high, be sure to use an inert atmosphere and a blast shield.