Sciencemadness Discussion Board » Special topics » Energetic Materials » Barium nitrate from sparklers Select A Forum Fundamentals   » Chemistry in General   » Organic Chemistry   » Reagents and Apparatus Acquisition   » Beginnings   » Responsible Practices   » Miscellaneous   » The Wiki Special topics   » Technochemistry   » Energetic Materials   » Biochemistry   » Radiochemistry   » Computational Models and Techniques   » Prepublication Non-chemistry   » Forum Matters   » Legal and Societal Issues

Author: Subject: Barium nitrate from sparklers
otonel
Hazard to Self

Posts: 84
Registered: 9-4-2005
Member Is Offline

Mood: No Mood

Barium nitrate from sparklers

I extracted some barium nitrate from cheap sparklers but the purity of final product was not satisfactory because barium nitrate dont crystallize like potassium nitrate do, and I heat the solution until all water evaporate .
The product is grey color and when burn in mixture with some combustible leave a lot of residue.
Cam you help me with some ideas to make the product purify better .
bismuthate
International Hazard

Posts: 803
Registered: 28-9-2013
Location: the island of stability
Member Is Offline

Mood: self reacting

Mix it with a solution of NaOH then bubble air (CO2) through the solution and filter the percipitate. This is barium carbonate which you can add to HNO3 to make barium nitrate.

I'm not a liar, I'm just an enthusiastic celebrant of opposite day.
I post pictures of chemistry on instagram as bismuthate. http://iconosquare.com/bismuthate
or this viewer if you don't have an instagram (it sucks though) http://web.stagram.com/n/bismuthate
phlogiston
International Hazard

Posts: 1358
Registered: 26-4-2008
Location: Neon Thorium Erbium Lanthanum Neodymium Sulphur
Member Is Offline

Mood: pyrophoric

In my experience barium nitrate crystallises easily.

I suspect you retained some metal powders from the mixtures. It contains both fine aluminium powder and coarse iron powder. It is advisable to extract the iron powder first with a magnet before proceeding with the rest of the mixture.

Don't make the mistake of using very hot water to extract the barium nitrate, because exothermic oxidation of the aluminium powder will result in a boiling mud and virtually no yield. It is better to use a large quantity of cold water and boil it down after filtering.

-----
"If a rocket goes up, who cares where it comes down, that's not my concern said Wernher von Braun" - Tom Lehrer
DubaiAmateurRocketry
International Hazard

Posts: 843
Registered: 10-5-2013
Location: LA, CA, USA
Member Is Offline

Mood: In research

adding some acetone can get you most of barium nitrate in few seconds.
Bert

Posts: 2789
Registered: 12-3-2004
Member Is Offline

Mood: " I think we are all going to die. I think that love is an illusion. We are flawed, my darling".

Might want to look at the toxicity of water soluble Barium compounds before you go about the extraction, and plan carefully to avoid contact with solutions, dust or fumes. Barium carbonate (reacts to form soluble Barium chloride in the stomach) was a popular RAT POISON before the modern anticoagulant poisons were invented.

Be aware, some people are much more sensitive to Barium than others. I have used Barium nitrate powder in formulating pyrotechnic mixtures with just leather gloves, long sleeves and a filter mask for protection. Others who have done this have had symptoms of Barium poisoning from apparently minor skin contact with Barium nitrate dusts-

The effects of a minor, non lethal poisoning were similar to the worst flu and diahroea you have ever had, both happening at once. It's something to avoid!

Both Barium and Strontium nitrates decompose mosy to their nitrites with low Oxygen yield and lots of solid residue in low temperature pyrotechnic mixes with organic fuels vs high temperature mixes fueled with powdered metals, sulfides or Sulfur. If you had a lot of residue and poor performance, the choice of your fuel is a possible cause in addition to your extraction product being impure. Some pyrotechnic mixtures include auxiliary oxidizers such as Chlorate or perchlorate to address this issue if they don't employ high temperature fuels.

[Edited on 8-12-2013 by Bert]

[Edited on 8-12-2013 by Bert]

Rapopart’s Rules for critical commentary:

1. Attempt to re-express your target’s position so clearly, vividly and fairly that your target says: “Thanks, I wish I’d thought of putting it that way.”
2. List any points of agreement (especially if they are not matters of general or widespread agreement).
3. Mention anything you have learned from your target.
4. Only then are you permitted to say so much as a word of rebuttal or criticism.

Anatol Rapoport was a Russian-born American mathematical psychologist (1911-2007).

otonel
Hazard to Self

Posts: 84
Registered: 9-4-2005
Member Is Offline

Mood: No Mood

 Quote: I suspect you retained some metal powders from the mixtures. It contains both fine aluminium powder and coarse iron powder. It is advisable to extract the iron powder first with a magnet before proceeding with the rest of the mixture. Don't make the mistake of using very hot water to extract the barium nitrate, because exothermic oxidation of the aluminium powder will result in a boiling mud and virtually no yield. It is better to use a large quantity of cold water and boil it down after filtering.

You have right I do that mistake

 Quote: adding some acetone can get you most of barium nitrate in few seconds.

That means barium nitrate is soluble in acetone? If that is true it will be a good step forward for my extraction
Bert thanks for security measures , I work with that kind of materials and know their toxicity
Bert

Posts: 2789
Registered: 12-3-2004
Member Is Offline

Mood: " I think we are all going to die. I think that love is an illusion. We are flawed, my darling".

No, the organic solvent causes the barium nitrate to drop out of solution. A similar method to using alcohol to cause potassium nitrate to crystalize out of a water solution.

If you missed the bit about low temperature fuels and Barium nitrate I just added, might want to look at it.

Rapopart’s Rules for critical commentary:

1. Attempt to re-express your target’s position so clearly, vividly and fairly that your target says: “Thanks, I wish I’d thought of putting it that way.”
2. List any points of agreement (especially if they are not matters of general or widespread agreement).
3. Mention anything you have learned from your target.
4. Only then are you permitted to say so much as a word of rebuttal or criticism.

Anatol Rapoport was a Russian-born American mathematical psychologist (1911-2007).

 Sciencemadness Discussion Board » Special topics » Energetic Materials » Barium nitrate from sparklers Select A Forum Fundamentals   » Chemistry in General   » Organic Chemistry   » Reagents and Apparatus Acquisition   » Beginnings   » Responsible Practices   » Miscellaneous   » The Wiki Special topics   » Technochemistry   » Energetic Materials   » Biochemistry   » Radiochemistry   » Computational Models and Techniques   » Prepublication Non-chemistry   » Forum Matters   » Legal and Societal Issues