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Fantasma4500
International Hazard
Posts: 1677
Registered: 12-12-2012
Location: Dysrope (aka europe)
Member Is Offline
Mood: dangerously practical
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i think if you do manage to produce some P2O5 you will find it problematic to collect it. one time i was weighting out the powderous horror it reacted
so vigorously with the water in the air that fumes of phosphoric acid travelled down the beaker and started reacting with the metal base on my scale
leaving a circular mark on the metal, it clumped up and what not. tossed into a sugary solution on contact with the water the heat decomposed sugar
directly into carbon
adding it to 62% nitric acid caused too much heat to control it even in small portions - then again the hell of it clumping up on contact with air,
you dont wanna add this to anything containing water from start
im sure one day this chemical will find its way into one of my nightmares, brutal stuff to handle. i merely keep it stashed as a collection, it has
however dehydrated the electrical tape i wrapped around the top of the container to keep it extra airtight, if you get to making P2O5 you will need
some very intense dehydration measures just so that it doesnt spoil.
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clearly_not_atara
International Hazard
Posts: 2692
Registered: 3-11-2013
Member Is Offline
Mood: Big
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Finally found a clear answer on this one. Aluminum metaphosphate, Al(PO3)3, loses about 5% of its weight in two hours at 1200 C, giving off P2O5 in
air or P2O3 + O2 if the partial pressure of oxygen is low.
https://www.sciencedirect.com/science/article/pii/S095522192...
Complete decomposition would therefore take about a day at 1200 C, probably going more quickly at higher temperatures. But since that's
really hot, unlikely that it will be feasible in an improvised setup.
[Edited on 04-20-1969 by clearly_not_atara]
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