DIR Return Create A Forum - Home
       ---------------------------------------------------------
       Chemistry:The Central Science
  HTML https://kolathechemist.createaforum.com
       ---------------------------------------------------------
       *****************************************************
   DIR Return to:  chemical engineering & industrial chemistry
       *****************************************************
       #Post#: 1747--------------------------------------------------
       Re: an accelerator for calsium oxalate formation
   DIR By: Michel
       Date: December 28, 2012, 2:58 pm
       ---------------------------------------------------------
       --- Quote from: Shiva link ---
       >
       > Also, oxalate compounds are cheaper than Oxalic acid. I tell
       you what Rasool, the problem with your reaction is Calcium
       carbonate -AN INSOLUBLE SALT. Of course, you will get Calcium
       oxalate on the surface but the reaction won't be a complete one.
       It is just like dissolving Calcium carbonate in sulfuric acid.
       As Insoluble compounds are on both sides (reactants & products),
       it will slow down your reaction and the reaction may not be
       completed.
       >
       > Shiva
       >
       --- End Quote ---
       i do not think this is his problem. from the picture he
       attached, i understand he wants to coat  marble bricks with a
       thin? layer of calcium oxalate, probably to give it a glossier
       look and to protect it from decomposing at low pH (possibly due
       to reactions with acidic solutions in nature or dissolved acidic
       gases in the atmosphere etc), so it really isnt a concern if
       oxalate salts are cheaper than oxalic acid. i think the film of
       calcium oxalate naturally should contain a little amount of
       unreacted calcium carbonate to give it some rigidity and
       binding?
       however this is just my opinion
       #Post#: 1748--------------------------------------------------
       Re: an accelerator for calsium oxalate formation
   DIR By: rasool083
       Date: December 28, 2012, 10:44 pm
       ---------------------------------------------------------
       Thanks Dear Michel
       I will try Ammonium oxalate and will inform you the result .
       I must find it in our market else I must producing it myself.
       Thanks
       *****************************************************
       Page 3 of 3
   DIR Previous Page