in the video novator says that around half of the 26.25g CuCl2 solution will be enough to 'cease' the black copper oxide formation.
does he actually use all of the CuCl2 solution, or only half of it?
(the last synth i did i added the CuCl2 solution in an unmeasured amount until the black copper oxide forms at the bottom of the reaction mix. i have yet to determine the quality and yield of the final product).
does he actually use all of the CuCl2 solution, or only half of it?
(the last synth i did i added the CuCl2 solution in an unmeasured amount until the black copper oxide forms at the bottom of the reaction mix. i have yet to determine the quality and yield of the final product).
I think it was not fully stated if 100% or 50% was used int he video. I think maybe 100% but it was highlighted that it might be enough to stop after 50% of the solution.
You will learn to see when the point has been reached to stop according to how your RM behaves. Yet I use almost most if not just all of it
Copper residues should not be left inside of the final product anyway
You will learn to see when the point has been reached to stop according to how your RM behaves. Yet I use almost most if not just all of it
Copper residues should not be left inside of the final product anyway
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- By mithyl2
hi gordon,
have you found any difference in the yields between either using all of it or adding only enough to get the formation of the copper oxide?
(i don't know why in the video novator uses the word 'ceased' because doesn't the copper oxide form at the bottom of the flask after adding enough of the CuCl2? or am i misunderstanding something?)
what color is your reaction when you stop adding the CuCl2 solution?
have you found any difference in the yields between either using all of it or adding only enough to get the formation of the copper oxide?
(i don't know why in the video novator uses the word 'ceased' because doesn't the copper oxide form at the bottom of the flask after adding enough of the CuCl2? or am i misunderstanding something?)
what color is your reaction when you stop adding the CuCl2 solution?
I have not compared yields yet nor have I payed too much attention to the colours of this stage, rather temperature but I can observe it for the next synthesis
- By mithyl2
good, let me know!
i think i added a bit too much on my last synth (testing if i can reliably do it by eye based on how the solution is) and i noticed very distinct and immediate color changes. upon addition of the first drops it turns blackish grey, then after maybe 15-20 minutes of stirring and another addition of several drops it turned yellow. this was all while the temp was at around 60C. for some reason i had trouble increasing the temp to 80C. (might be my hotplate). in fact it never reached 80C, but i did stir it for about 3 1/2 hours at 62C once i finished adding the CuCl2.
i think i added a bit too much on my last synth (testing if i can reliably do it by eye based on how the solution is) and i noticed very distinct and immediate color changes. upon addition of the first drops it turns blackish grey, then after maybe 15-20 minutes of stirring and another addition of several drops it turned yellow. this was all while the temp was at around 60C. for some reason i had trouble increasing the temp to 80C. (might be my hotplate). in fact it never reached 80C, but i did stir it for about 3 1/2 hours at 62C once i finished adding the CuCl2.
I usually add it quite fast which means continously dripping it so that the temperature is kept in check and 80°C is not passed, you maybe also want to watch out that your RM is not expanding too heavily
Maybe if you can exchange your hotplate for a heating mantle. The loss of heat on the way from your heat source to the RM will be too much to reach that temperature fast.
What temperature did you had your hotplate set on?
Maybe if you can exchange your hotplate for a heating mantle. The loss of heat on the way from your heat source to the RM will be too much to reach that temperature fast.
What temperature did you had your hotplate set on?
- By mithyl2
i'll be using my mantle next time because of this.
its a ceramic hotplate. at first it was set to 83C but the solution wouldn't go past 60C. and it took a long time to get there from about 50C. then i turned the hotplate to 100C, nothing changed with the solution, then set the hotplate to 120C, and still nothing changed. it's happened before with other synths.
and before heating it i wrapped the flask in foil.
its a ceramic hotplate. at first it was set to 83C but the solution wouldn't go past 60C. and it took a long time to get there from about 50C. then i turned the hotplate to 100C, nothing changed with the solution, then set the hotplate to 120C, and still nothing changed. it's happened before with other synths.
and before heating it i wrapped the flask in foil.
Good, a heating mantle will help.
It is important to wrap the flask and also the lower part right above the heating plate. It can also be outside vactors like a fan or something else blowing cold air that prevent the flask from heating up to 80 °C
It is important to wrap the flask and also the lower part right above the heating plate. It can also be outside vactors like a fan or something else blowing cold air that prevent the flask from heating up to 80 °C
