I would like to prepare a calcium carboxylate. The procedure is overbasing the carboxylic acid with excessive Ca(OH)2 than bubbling CO2 through it to precipitate CaCO3. Can I just throw some pieces of dry ice into the mixture? Gas cylinder is hard to handle.
Could you not put he solid CO2 into a container and bubble the gas through the calcium hydroxide solution?
Throwing the solid CO2 into the solution may simply freeze it
a) If you want to perform your synthesis, follow Milham's suggestion.
b) Are you sure that your recipe will work? If your carboxylate is water-soluble, precipitating the calcium from the solution will give you your carboxylic acid back. If the carboxylate is not water-soluble and precipitates, adding calcium hydroxide will produce a messy mixture of
carboxylate and calcium carbonate.
Dear Dr. Milham and dear Herr Prof. Deiters,
I will suspend Ca(OH)2 in MeOH/toluene mixture then add the carboxylic acid into this suspension. The acid is not water soluble and I don't think that dry ice can freeze these two solvents.
I also believe that I will get a sludge after the CaCO3 precipitates. But that's how the patent described.
Thank you! Danke!
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