Fantasma4500
International Hazard
Posts: 1681
Registered: 12-12-2012
Location: Dysrope (aka europe)
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Mood: dangerously practical
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Removing H2O from liquids
what if you took a nitrate salt for nitric acid, a nitrate salt that would be capable of being anhydrous and taking up alot of water molecules and
mixed it with nitric acid to get a higher concentration, and avoid using sulfuric acid?
i tried making a bit of zinc nitrate, as i remember it should be capable of binding itself to 6 water molecules, iron nitrate as much as 9, again not
100% sure, this is also just hypothetically speaking, still.
the zinc nitrate i tried to dry but apparently many of these nitrates have a very fine thermal line between anhydrous and NO2 + metaloxides..
perhaps taking alot of iron plates and putting them inside a glass container of some sort, then generating some NO2 and closing it would work to get
the anhydrous iron nitrate?
the problem with this is just that it wouldnt be good for large amounts, if it would be able to drag the water out of the nitric acid at all..
perhaps silica gel as its not soluble (doubt it reacts with nitric acid either?)
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plante1999
International Hazard
Posts: 1936
Registered: 27-12-2010
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Mood: Mad as a hatter
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Magnesium nitrate, use to be used in industry in the indirect process for nitric acid concentration.
I never asked for this.
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Fantasma4500
International Hazard
Posts: 1681
Registered: 12-12-2012
Location: Dysrope (aka europe)
Member Is Offline
Mood: dangerously practical
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really?? i have never heard about removing water from a liquid using an anhydrate tho.. (:
hexahydrate, well its plenty for removing H2O.. do you know if theres any limit for how much water it can take, except for 6 water atoms, i mean as if
it can absorb water from nitric acid until its as much as 99% nitric acid?
i believe its called azeotropical bound water?
the decomp. temp. of Mg(NO3)2 is 330*C, but thats the hexahydrate, i might try to find out if its possible to make the anhydrate without decomposing
it easily..
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