
Anyone experimented with metal carbonate based colours?
#61
Posted 29 June 2010 - 11:50 PM
might buy some ammonium sulfate, barium sulfate and what other sulphate's i can get cheaply.
does anyone have any fine mesh Mg they fancy selling?
anyone know where to get or how to make aluminum sodium nitrate? looks like it might be interesting.
#62
Posted 29 June 2010 - 11:55 PM
(AlNa)NO3
or
Al + NaNO3
#63
Posted 30 June 2010 - 11:05 AM
#64
Posted 30 June 2010 - 11:45 AM
#65
Posted 30 June 2010 - 07:23 PM
#66
Posted 30 June 2010 - 08:21 PM
#67
Posted 30 June 2010 - 08:27 PM
Mg 16%
Al 12%
Ba(SO4)2 40%
Ba(NO3)3 32%
Here he stresses the fact that the sulfates are neglected in pyro, and that was already 42 years ago!
Edited by Pyroswede, 30 June 2010 - 08:28 PM.
used for sundry preparations, and especially for experimental
fire-works."
Dr. James Cutbush
#68
Posted 30 June 2010 - 10:27 PM
#69
Posted 01 July 2010 - 12:13 AM
#70
Posted 01 July 2010 - 05:37 AM
Mg 20%
MgAl 14%
Ba(SO4)2 66%
Barium sulfate is one of the few (if not the only) barium compounds that aren't toxic to the human body, at least not when digested. It also doesn't form hard cakes like the nitrate does. It costs about the same as the nitrate, though the price would probably go down, if the production of the sulfate increased.
Edited by Pyroswede, 01 July 2010 - 05:38 AM.
used for sundry preparations, and especially for experimental
fire-works."
Dr. James Cutbush
#71
Posted 01 July 2010 - 07:25 AM
#72
Posted 01 July 2010 - 08:31 AM
used for sundry preparations, and especially for experimental
fire-works."
Dr. James Cutbush
#73
Posted 01 July 2010 - 09:00 AM
Mg 18%
MgAl 12%
Ba(SO4)2 60%
parlon 10%
this would probably be good for parlon binding with acetone.
#74
Posted 01 July 2010 - 11:09 AM
I would say a better composition is this:
Sulfate, 53
Magnesium, 37
Parlon, 10
One I recently tried was this:
Strontium Borate, 4
CPVC Coarse grade, 1
Magnesium, 5
Not being particularly better than other red flashes I am not inclined to keep working with it, but it did make a fairly loud noise in the open.
This is essentially possible with any metallic oxyanion and I would encourage other members here to find and test them wherever possible if they are interested in developing colors without requiring perchlorates or chlorates (which are indeed very hard or expensive to find).
Look around.
#75
Posted 01 July 2010 - 11:20 AM
if so how much water to boric acid powder would you use to get the correct molar and what if any specific method?
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