niertap - 8-3-2012 at 22:47
If you had 1lb of phosphorus pentoxide(P4O10), what would you synthesize?
I briefly considered reacting it with some sodium azide to form something like the compounds in the link below. However I decided my hands are worth
more than satisfying my curiosity.
http://www.dtic.mil/cgi-bin/GetTRDoc?AD=ADA480877 ::: page 10&11
Molecular Structure of DAHA and ENTA
The NSWC-IHD initiated a program in 1998 targeting the replacement of lead based
primary explosive initiating compounds (lead styphnate and lead azide),]]
gratis wakirpledia=================
Applications of phosphorus pentoxide
Phosphorus pentoxide is a potent dehydrating agent as indicated by the exothermic nature of its hydrolysis:
P4O10 + 6 H2O → 4 H3PO4 (–177 kJ)
However, its utility for drying is limited somewhat by its tendency to form a protective viscous coating that inhibits further dehydration by unspent
material. A granular form of P4O10 is used in desiccators.
Consistent with its strong desiccating power, P4O10 is used in organic synthesis for dehydration. The most important application is for the conversion
of amides into nitriles:[6]
P4O10 + RC(O)NH2 → P4O9(OH)2 + RCN
Supposedly, when combined with a carboxylic acid, the result is the corresponding anhydride:[7]:
P4O10 + RCO2H → P4O9(OH)2 + [RC(O)]2O
The desiccating power of P4O10 is strong enough to convert many mineral acids to their anhydrides. Examples: HNO3 is converted to N2O5; H2SO4 is
converted to SO3; HClO4 is converted to Cl2O7.
Adas - 9-3-2012 at 09:25
Cl2O7 may be used for perchloration, when you strongly dilute it, but this is just theoretical, and should not be attempted.
Cl2O7 is dangerously explosive oil, I believe.
VladimirLem - 9-3-2012 at 11:10
its a really good dehydrating agent
That stuff is perfect at a RDX synthesis if you dont have acetic anhydride
this method is called "106% HNO3" - high yields and good chances of getting HMX "impurities"
with DPT you can make HMX with it
niertap - 12-3-2012 at 01:39
Nitration of hexamine with it seems like an interesting idea. Maybe I shall acquire some one day. Does anyone know much about it dehydrating
alcohols in an undesirable elimination way( making an alkene, double bond), if it shits up the nitration of things like erythritol(making esters that
are too stable), or if it will do someing alaogous to H2SO4 sulfonating an aromatic ring(benzene)?