angelhair - 1-12-2008 at 01:15
I can only think of 2.
Benzoic acid with CaCO3 and benzotrichloride with CaO. How many other easy ways are there?
a_bab - 1-12-2008 at 04:16
I find benzoic acid + lime water as the easiest way.
Picric-A - 1-12-2008 at 05:35
Benzoic acid with a emultion of CaOH in water.
What other ways were you thinking of?
Its a acid base reaction... cant get any easier...
DJF90 - 1-12-2008 at 06:39
"Double substitution" between potassium/sodium benzoate and calcium chloride. Calcium benzoate has solubility of ~2.7g/100ml at 20C and so should
precipitate out. Alkali metal chloride will remain in solution.
chemkid - 1-12-2008 at 12:29
Sorry to be so picky, but i believe terminology is important.
Ca(OH)2 in water is actually a suspension not an emulsion. An emulsion is a liquid in liquid colloid.
http://en.wikipedia.org/wiki/Colloid
Sorry, just thought that was important.
Anyway, what are OTC sources of benzoic acid (i see it in all the cereals)
Chemkid
chemrox - 1-12-2008 at 20:45
Benzoic acid, Ca propionate and Ca benzoate are available in bulk from food suppliers. Maany other salts as well.
Picric-A - 2-12-2008 at 00:10
Sorry chemkid , your right i meant a suspention.
angelhair - 5-12-2008 at 19:03
Benzoic acid and Na benzoate yes. but I haven't seen Ca benzoate anywhere. Food ingredient suppliers or chemical companies don't seen to stock it, at
least in the southern hemisphere.