[Copper]

Hello all,
I am thinking about making CuSO4. If the process of H2SO4 + electricity + Cu electrodes were to be attempted, would dilute H2SO4 (20-40%) work? If not, what could be done to make it work (boiling it produces toxic SOx fumes). (Also a while ago I saw a thread on metal displacement of MgSO4).
Thanks 

[dylanail]

I am not sure, but if you need copper sulfate for something, get it here: http://www.lowes.com/pd_408173-531-ZROOT24_0__?k_clickID=d8e7aed5-160e-4a5b-b0c3-9168781b7080&store_code=714&productId=4383191&selectedLocalStoreBeanArray=%5Bcom.lowes.commerce.storelocator.beans.LocatorStoreBean%4032693269%5D&storeNumber=0714&kpid=4383191&kpid=4383191&cm_mmc=SCE_PLA-_-HomeFashions-_-DrainCleaning-_-4383191%3AZep_Commercial&CAWELAID=&CAWELAID=1797248126 It's really cheap that way.

[billnotgatez]

@dylanail
Your suggestion may be OK assuming that you are willing to accept up to 10% impurities.

[Enthalpy]

CuSO₂ from Cu: you could check on Wiki the conditions of copper electrorefining, because this is half of their process. And, yes, the solution is not very concentrated.

[arbyflask]

@dylanail
Your suggestion may be OK assuming that you are willing to accept up to 10% impurities.

Really?  I have been buying bottles of "Zep Root Kill" which claim 99% purity.  And they look pretty nice, blue crystals, very little or no insoluble residue.

If you need to clean it up, there's always recrystallization from hot water.

[billnotgatez]

@arbyflask
I based my reply on information from a site like this
http://www.zepcommercial.com/sds

Maybe you have better information.

[arbyflask]

99% purity reported here:

http://www.homedepot.com/catalog/pdfImages/55/55dc287d-9908-4836-b368-ae0162c07921.pdf

This is also present on the bottle's label.  And like I said, it looks GREAT.  In fact better than the stuff sold by some chemical companies.  And the price is right. 

So I would never want to make cupric sulfate.  I prefer to make other things from cupric sulfate.