Instructables
video How to make Green Fire.
Mix Heet Antifreeze, with Boric Acid (commonly found as roach killer), and light!
Its that easy.
But why does this happen?
Because, Boric Acid is a boron containing compound... Any boron-containing compound will cause flames to emit a green colour.

When boron compounds are heated, electrons absorb a certain amount of heat energy that causes them to jump to higher energy levels. After some time, the electrons lose this energy and fall back down to their original levels, emitting this energy in the form of light. Because the energy absorbed by electrons is different per element, each element will give a different colour.
d2j55 years ago
wont...that like kill you? under boric acid it said roch killer........
check out the link:
http://en.wikipedia.org/wiki/Boric_acid#Toxicology
and its fire diamond on the same page, but scroll a little up.
would burning copper salts produce the same results from a much safer compound that isn't deadly.
Boric Acid is similarly toxic as salt, except that people have no reason to eat it. It kills bugs in hair and fungus on skin. It kills bugs by making them unable to eat. It is probably the weakest acid. Salt kills earthworms and slugs. Copper dust or thin wires do make fire green too.
what about carbonic acid??? as far as weakest acid is concerned???
yeah, it probably would. Since the copper (or copper compound) in the crystal is bound by electrons basically 'magnetized' to protons of the other compound, you could probably dissolve as much of the salt as you can in almost boiling water and then burn it
That'll look good n an oil lamp.
Evilblaze5 years ago
Why does this happens? Not correct. Boric acid and methanol forms boric acid methyl ester and when this ester burns, than it will cause this light. It also works with ethanol, but than you should add some cc sulfuric acid as a catalyst to form boric acid ethyl ester.
Please change your than to then.
do you have to use heet antifreeze or i can use other antifreeze?
this is cool!! 5/5
tranoxx4 years ago
How long will it burn for?
luka11844 years ago
How can and do you even learn how to guess what things in both scince, technology, electronically and substances and WHATEVR, which can work together? And how the hell did the first sciencetists found out and learned it?

I need to make Withccraft fake flames for fun, only to expereince. I'am not really interesting in it like that.

Cya my friends!

PS I would apreciate a FAST and EASY way to learn this, AT HOME ;D Bye bye, and live on happily.
thartaros5 years ago
does the fire create toxic fumes? because as far as i know you're burning two chemicals that can kill humans. also is there a way to make this into candle form, or maybe like an oil lamp?
If it does create toxic fumes, as long as you do it outside, you should be fine (given that youre not mutting your face right over it and breathing it in deeply)

as for the oil lamp, you could probably just put this mixture into the part of the lamp where the oil goes
FuyuKitsune5 years ago
My trick is mixing isopropyl alcohol (rubbing alcohol) and sugar. The sugar burns blue and the alcohol burns yellow, but it's not as cool as this. That bright-green is sweet.
that doesnt work.
oh, the alcohol burns blue :P sorry the only liquid I can think of that burns yellow is gas. Ima try that later
iMac (author)  FuyuKitsune4 years ago
Sodium burns yellow, so maybe you got sugar and salt mixed up.
ROFL!!!
tailboy5 years ago
thats pretty neat!
___5 years ago
Cool!
westfw5 years ago
"Heet Antifreeze" (actually, isn't it more a de-watering agent for gasoline?) is Pretty pure methyl alcohol. My understanding is that the alcohol actually reacts with the boric acid to produce methyl borate, which is both flammable and soluble in the alcohol, which makes this work much better than other similar demonstrations.