FrankMartin
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Possible route to acetic anhydride.
What about the shift reaction:
PhthalicAnhydride + 2GlacialHOAc = AceticAnhydride + PhthalicAcid?
PhthalicAnhydride is used in vast quantities for polymers, plasticers and resins.
The above reacion might be driven to the right because the MP of AceticAnhydride is very low, but the MP of PhthalicAcid is very high causing this
latter to xtallize out from the rection medium. Entropic reaction.
LHS: PhthalicAnhydrice MP131degC 55.2%
2HOAc MP 16.2 degC 44.7%
RHS: AceticAnhydride MP -73degC 38.05%
PhthalicAcid MP 210degC 61.9%
Unknowns would be the optimum temperature and the correct (acidic?) catalyst.
One most of the PhthalicAcid had xtallized out then a distillation might be warranted.
Has anybody tried this? Seems too good to be true.
F
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not_important
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What about killing this thread and posting in the acetic anhydride thread?
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FrankMartin
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And where would that be? It's not on the front page.
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solo
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...this is were it's been for a long time...solo
http://www.sciencemadness.org/talk/viewthread.php?tid=9
It's better to die on your feet, than live on your knees....Emiliano Zapata.
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not_important
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Not everything is on the front page; how could they be especially when people keep creating redundant and frivolous threads? And some topics have been
discussed to death, there's been nothing new on them for some time.
You can start search by looking at http://www.sciencemadness.org/talk/ the root of the discussions and working you way down.
As for not being on the front page...
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