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Chemistry / Re: What othere thermite mixtures without Aluminum powdere?
« on: 10/09/2022 23:35:10 »
Which composition can be ignited easily if the ingridients are coarse powders
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If you leave the liquid in a shallow dish most of the the water will evaporate and will leave a strong solution of crude potash behind.
You can boil off the remaining water but be careful what sort of container you use.
Spinels are mixed metal oxides. The first one would give a phosphate mixed salt, not a spinel. Anyway p2o5(more accurately p4o10) is dreadful stuff to work with. It usually comes as a fine dusty powder that turns to glue on contact with atmospheric moisture and releases so much heat that spillage on paper or cloth can start a fire. To work with it you would need a glove box and a vacuum desiccator . The other combo might give a spinel, I don't know offhand. You would need to know the required stoichiometrics and a fierce source of heat to melt these refractory oxides.