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Green Fire?? Answered

I recently went on a campout with some friends and someone brought a bunch of newspaper. When we put a bunch in the bottom of the fire turned green. Does anyone know how that happened?



Best Answer 10 years ago

Sometimes the newspapers are printed with paint what contains metal salts what can change the colour of the fire.
Maybe the newspaper was printed with paint what contained: copper salts, boron salts, barium salts.

I think there was a little boron in the paper, they use boric acid often to impregnate paper against fire, but if you place this paper in a big fire e.g. campfire, than the boric acid will just colour the flame.

And there is a great experiment: boric acid+methanol= boron-metanoate what burns with beautiful green flame. Or you can use ethanol also, just you have to add a little sulfuric acid as catalyst to give boron-ethanoate.

Or maybe they used a copper based paint in the newspaper. That can also happened.

If you want to color flame, than visit: http://evilblaze.extra.hu/

pyro man

10 years ago

Most of the time the ink in the paper will turn the fire different colors.which can be very entertaining.