Vanadium Pentoxide
#1
Posted 30 October 2009 - 06:37 PM
#2
Posted 30 October 2009 - 06:53 PM
Everything in pyro is done down to a price.
Keep mannequins and watermelons away from fireworks..they always get hurt..
#3
Posted 30 October 2009 - 07:01 PM
#4
Posted 30 October 2009 - 10:05 PM
#5
Posted 31 October 2009 - 12:26 AM
#6
Posted 31 October 2009 - 12:53 AM
used for sundry preparations, and especially for experimental
fire-works."
Dr. James Cutbush
#7
Posted 31 October 2009 - 11:15 AM
#8
Posted 31 October 2009 - 01:19 PM
used for sundry preparations, and especially for experimental
fire-works."
Dr. James Cutbush
#9
Posted 31 October 2009 - 03:28 PM
#10
Posted 01 November 2009 - 11:58 PM
You also have to consider the toxicity of vanadium smoke. It is readily absorbed through the lungs.
#11
Posted 02 November 2009 - 04:53 PM
BaClO3 I assume, BrClO3 might be a little more active.....would it work like BrClO3 being a oxidizer and colorant.
....at 312nm, which is on the purple/UV threshold. It wont be very visible if it can be created. I am trying to find a more complete spectra.
Very minor point, UV-B.
A good source of atomic spectra is the NIST database.
http://physics.nist..../ASD/index.html
There is a high intensity indigo/violet emission at 438nm. The intensity values aren't adjusted for human eye response and it's difficult to guess what the overall colour would be with so many other lines.
V2O5 is probably a poor oxidiser unless the fuel is aluminium or magnesium.
#12
Posted 02 November 2009 - 09:59 PM
You also have to consider the toxicity of vanadium smoke
Vanadium pentoxide itself seems fairly nasty... from the MSDS:
Extremely toxic. May be fatal if swallowed, inhaled or absorbed through skin. Note low LD50s below. May cause reproductive defects. May cause severe irritation or burns on contact. Typical TLV/TWA 0.05 mg/m3
ORL-RAT LD50 10 mg kg-1
ORL-MUS LD50 5 mg kg-1
SKN-RBT LD50 50 mg kg-1
#13
Posted 03 November 2009 - 01:47 AM
#14
Posted 21 June 2010 - 12:49 PM
My vanadium pentoxide isn't blue but brownish-yellow in apperance. Still haven't tested it.
Btw, vanadium was discovered by a Swede and named after Vanadis, which was another name for the godess Freja.
used for sundry preparations, and especially for experimental
fire-works."
Dr. James Cutbush
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