i came acrost this
"FIRESUITS
The mandatory use of fire suits adds to the generally held view that with nitro-methane mixtures the fire risk is increased, but this is not so.
If you care to test this you can do so as follows. Take a small amount of petrol, about one teaspoonful say, and place in a small tin lid and then ignite. It will catch fire almost with a bang.
Now take the same amount of methanol and after the tin has cooled down, repeat the exercise observing the almost lazy manner in which it ignites, burning with a blue colour, the edges of the flame lined in places in yellow and orange.Now take the same amount of nitro-methane, 98 per cent if you like, and repeat the experiment and see how difficult it is to ignite, burning with a green tinted flame in a reluctant manner.
This is due of course to the respective flash points of the three fuels, petrol being the lowest at between zero and 40 degrees F. approximately, methanol at 67 Degrees F., and nitromethane at 110 degrees F.
In other words with petrol you have a major fire risk and far less so with nitromethane mixtures"
so it seems like its burning like it should. the residue left on the plate will go away if heated.
i checked the MSDS sheet again that came with it. it claims 99.95% with no word of additives. i did come acrost some brands that say 99.?? pure with an additive that changes color from light yellow to blue if the nitro goes bad. this stuff is water clear tho. just not as thin as water really. and if any one wants to read between the lines it was supplied from a world wide racing fules supplier. if some one wher to put a few W's in front and a com on the back and remove the right spaces. they might find them selves on a site that has the info. but not because of me only by chance.