Sciencemadness Discussion Board

Calcium metal from calcium acetate?

vampirexevipex - 14-5-2012 at 14:01

Hello, i have alot of calcium acetate over here and i was just wondering, if it is possible to get the metal from it. Or atleast the hydroxide or oxide. Anyone know how?

rannyfash - 14-5-2012 at 15:37

well http://www.sciencemadness.org/talk/viewthread.php?tid=12753,

and then calcium carbonate "releases carbon dioxide on heating (to above 840 °C in the case of CaCO3), to form calcium oxide" http://en.wikipedia.org/wiki/Calcium_carbonate,

from that it could be added to water to make slaked lime, think i can remember doing this 2 years ago in gcse :P

rannyfash - 14-5-2012 at 15:39

im guessing electrolysis of molten CaO would be easier than electrolysis of molten calcium acetate as it wouldnt produce flammable acetone vapours

m1tanker78 - 14-5-2012 at 16:05

Quote: Originally posted by rannyfash  
im guessing electrolysis of molten CaO would be easier than electrolysis of molten calcium acetate as it wouldnt produce flammable acetone vapours


According to Wiki, calcium metal boils at 1484C and calcium oxide melts at 2572C. That's a no-go. Calcium metal can be made from electrolysis of fused calcium chloride. Easier said than done, though.

To vampirex: The best use (off the top of my head) for calcium acetate is making concentrated acetic acid. I don't have any use for conc. acetic acid but if/when I do, I have a ton of calcium acetate stored away.

Tank

Eat dah poo poo

vampirexevipex - 14-5-2012 at 16:47

Thanks guys!

vampirexevipex - 15-5-2012 at 03:07

Quote: Originally posted by m1tanker78  
Quote: Originally posted by rannyfash  
im guessing electrolysis of molten CaO would be easier than electrolysis of molten calcium acetate as it wouldnt produce flammable acetone vapours


According to Wiki, calcium metal boils at 1484C and calcium oxide melts at 2572C. That's a no-go. Calcium metal can be made from electrolysis of fused calcium chloride. Easier said than done, though.

To vampirex: The best use (off the top of my head) for calcium acetate is making concentrated acetic acid. I don't have any use for conc. acetic acid but if/when I do, I have a ton of calcium acetate stored away.

Tank


How do i sepparate it from the acetate to make conc. Acetic acid?

Sorry i double posted, i forgot i already had posted.

[Edited on 22-02-12 by vampirexevipex]

barley81 - 15-5-2012 at 03:41

Distill it with concentrated sulfuric acid. You get calcium sulfate as a byproduct. You should probably powder the calcium acetate well before using it because a crust of insoluble calcium sulfate might form around the particles.

AJKOER - 16-5-2012 at 05:46

Oxalic acid dihydrate and Calcium acetate (most likely the monohydrate) form Acetic acid and the very insoluble Calcium oxalate:

(Ca(CH3COO)2•H2O + H2C2O4.2H2O --> CaC2O4 (s) + 2 CH3COOH

vampirexevipex - 16-5-2012 at 06:28

Thanks, anyways what would happen if i run electrolysis on it? (aqueous) :P