ninhydric1
Hazard to Others
Posts: 345
Registered: 21-4-2017
Location: Western US
Member Is Offline
Mood: Bleached
|
|
Viable method for extracting strontium from sparklers?
As I expect, there will be many people saying to UTFSE or whatever, but first, I found nothing, and second, this procedure is fit for my circumstances
and the amount of resources I have. The reason I'm extracting strontium is for flame tests and maybe add it to my element collection. So here's the
procedure I devised up:
1. Crush the red sparklers into a powder.
2. Dissolve the powder in about 200-300 mL of water.
3. Filter off any undissolved material.
4. Add dropwise a solution of a sulfate salt (I'll probably use either CuSO4 and MgSO4) until no more precipitate appears. Using a filter paper,
filter off the precipitate.
5. (I plan to convert it to the nitrate salt) Add dil. nitric acid slowly to the precipitate. Add 50 mL of water. Keep adding nitric acid until all of
the insoluble material has reacted and dissolve.
I'm just wondering if step 5 will actually convert it to the nitrate salt, and if so, what type of gas will it produce? And correct any of these steps
if they are incorrect.
NOTE: I'm not using it for pyrotechnic purposes, so please don't detritus it, mods.
|
|
|
symboom
International Hazard
Posts: 1143
Registered: 11-11-2010
Location: Wrongplanet
Member Is Offline
Mood: Doing science while it is still legal since 2010
|
|
No dont waste the precious nitric acid
So much more valuable than strontium nitrate
As for extraction strontium carbonate react with ammonium nitrate and boil solution just as the reaction of baking soda and ammonium nitrate to make
sodium nitrate gases produced with be ammonia and carbon dioxide gas
Here is extraction of strontium nitrate from a road flare you get a lot more along with sulfur
https://m.youtube.com/watch?v=b1D5GKdherY
[Edited on 2-7-2017 by symboom]
|
|
|
unionised
International Hazard
Posts: 5103
Registered: 1-11-2003
Location: UK
Member Is Offline
Mood: No Mood
|
|
Step 5 just won't work.
SrSO4 will not react with HNO3
However, if you only want it for an element collection, the sulphate will do.
You might do better to leach the sparklers in water to get a solution of Sr salts (I guess mainly the nitrate).
Filter it.
Add Na2CO3 solution to ppt the Sr as SrCO3.
You can put that in the element collection as is or react it with HCl to get SrCl2 which is more volatile and will give a better flame test.
|
|
|
ninhydric1
Hazard to Others
Posts: 345
Registered: 21-4-2017
Location: Western US
Member Is Offline
Mood: Bleached
|
|
The problem with the Na2CO3 method is that there might be magnesium in the sparklers, and the Na2CO3 method might also precipitate any magnesium ions
in solution unless the magnesium is in metallic form.
I might attempt the ammonium nitrate method. It seems simple, and not many side products will be left behind in solution.
|
|
|
symboom
International Hazard
Posts: 1143
Registered: 11-11-2010
Location: Wrongplanet
Member Is Offline
Mood: Doing science while it is still legal since 2010
|
|
The sparkler is already strontium nitrate
As the oxidizer https://en.m.wikipedia.org/wiki/Sparkler
No other oxidizer can be used sodium will over power the red strontium color so only strontium nitrate can be used ignore my comment that would be if
it was strontium carbonate
Sure the search engine might not come up with answers not many work with strontium chemistry I have done a bit.
I would substitute strontium nitrate for barium nitrate such as making copper nitrate from copper sulfate any transition metal nitrate needed.
but boiling down the strontium nitrate solution is better and can be boiled to dryness with out decomposing easily. Decomposes at 1,193 °F kcompared
to magnesium nitrate at 626 °F or sodium nitrate at 716 °F;
Also see what your doing
I assume this is why the OP stated the reaction
Strontium sulfate
It is more soluble in dilute HCl and nitric acid and appreciably soluble in alkali chloride solutions (e.g. sodium chloride)
Strontium nitrate is insoluble in nitric acid
So understandably why one might think this
But sulfuric acid is not produced it is a stronger acid it onlt helps desolve it based in ions in solution
Strontium salts are very interesting chemicals there solubilitys can be altered just by adding different ions normally insouble strontium sulfate
dissolving in solution
[Edited on 2-7-2017 by symboom]
|
|
|
![[*]](images/xpblue/default_icon.gif){kind=icon}
