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Author: Subject: A few exotic compositions
BauArf56
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[*] posted on 18-4-2021 at 07:16
A few exotic compositions


during my attempts of making exotic composition, i noticed that some are very interesting:
Magnesium and sulfur
This one is very powerful, burns very quickly and gives off a yellowish flash and a lot of smoke. I'm not sure if explodes on confinement.

Ferrocerium and sulfur
Powdered ferrocerium can be obtained by scratching carefully a ferrocerium rod. This mix is very easy to ignite and throws sparks literally everywhere.

Potassium bitartrate and magnesium
if an excess of mg is added to potassium bitartrate, blinding purple flames and lots of smoke are produced. This is one of the most beautiful mixtures.

magnesium and sodium bicarbonate
gives yellow flames that are much more blinding than magnesium alone. Very bright.

are there any other interesting mixture like these?
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woelen
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[*] posted on 18-4-2021 at 09:45


Magnesium with nearly anything, which can be reduced further. Some examples:

Mg + red P --> very violent reaction, formation of magnesum phosphide, which in contact with air will burn up.

Mg + Si --> Gives a violent reaction, producing Mg2Si, which, when added to dilute acid, gives self-igniting SiH4. Safer alternative is Mg + very finely powdered SiO2.

Mg + AgNO3 --> When a small drop of water is added, the mix deflagrates with a bright white flash and small silver droplets are sprayed around. When preparing this mix, be absolutely sure to use perfectly dry reagents and only make small amounts (100 mg at most). Ignite with a small drop of water on a long stick to avoid getting molten silver droplets on your body.

I do not consider these compositions very exotic. In pyrotechnics they are not used, because of their risky nature (can self-ignite).




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BauArf56
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[*] posted on 18-4-2021 at 11:07


whoa, interesting mixes! anyway i consider them exotic because i can't find any information on the internet about them. But can you explain why the mg/bitartrate gives such flames? I'm still wondering about that.

[Edited on 18-4-2021 by BauArf56]
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woelen
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[*] posted on 19-4-2021 at 09:53


Bitartrate contains a lot of oxygen and with red hot finely powdered magnesium metal nearly everything, which contains oxygen can act as an oxidizer. With magnesium such reactions usually are really violent and produce a lot of heat.

Another very nice mix is Mg + finely crushed I2. Mix the chemicals in a perfectly dry state and then add a drop of water. You will see a beautiful purple cloud of iodine vapor when the mix sets off.

https://woelen.homescience.net/science/chem/exps/mg+iodine/i...
https://woelen.homescience.net/science/chem/exps/AgNO3+Mg/in...




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Morgan
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[*] posted on 19-4-2021 at 11:22


Magnesium and MgSO4 burns pretty good for something different.
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[*] posted on 19-4-2021 at 20:17


Thermite was fun. www.amazingrust.com/Experiments/how_to/Thermite.html

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BauArf56
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[*] posted on 20-4-2021 at 00:29


thank you all! I want to do mg and i2, but first i have to dry completely my iodine, because i extracted it from the tincture and it's still wet. I didn't know about magnesium sulfate, pretty interesting. Already did a few thermite compositions (Mg/MnO2 and Al/Fe2O3)
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