Mmmm....organic chemistry ;-) Luckily I live somewhere where they'll come and pick up any toxic chemical I have (for free in the "Toxic Taxi") and appropriately dispose of it (although, for all I know they just pour it into Lake Ontario). -marc On 10/7/03 15:49, "Debbie Hynes" wrote: > --- Wouter van Ooijen wrote: > > If u add any chemicals to > convert to insol form it gets >>> expensive. >> >> Why? Is Na2C03 exepensive where you live? >> >> Wouter van Ooijen >> > Na2CO3 is somewhat cheap but it's still an extra cost - is it the bicarbonate > (NaHCO3) you can buy cheap in supermarkets u r thinking of? Got a feeling the > favoured reaction is gonna be Fe3+/Cu2+ + OH- --> insol hydroxide, not a > carbonate. So it's only the OH- formed by hydrolysis if the HC03-/CO32- that's > gonna be important? bottom line is you'll need a LOT of bicarb. Might be > cheaper to use NaOH (relatively cheap)? You would still have a problem because > Fe(OH)3 clumps & precipitates like crazy and would block any drain you put it > down. :( > Debbie :) > > http://mobile.yahoo.com.au - Yahoo! Mobile > - Check & compose your email via SMS on your Telstra or Vodafone mobile. > > -- > http://www.piclist.com hint: To leave the PICList > mailto:piclist-unsubscribe-request@mitvma.mit.edu > -------------------------------------------------- Marc Nicholas Geekythings Inc. C/416.543.4896 UNIX, Database, Security and Networking Consulting -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu