Sciencemadness Discussion Board

Question on the preparation of tetraaminecopper (II) sulfate crystals.

Velzee - 8-9-2015 at 11:00

According to the resource cited below, ethyl alcohol is used to precipitate the tetraaminecopper (II) sulfate, but I have no ethanol available at the moment. I do have isopropyl alcohol; would this be suitable? I've be trying to isolate the crystals of this compound for a while, to no avail, as it keeps decomposing into copper hydroxide. I think this could be successful.

Thank you in advance!

Source: http://wikieducator.org/ANDChemistry/Preparation_of_Tetraamm...

[Edited on 9/8/2015 by Velzee]

DraconicAcid - 8-9-2015 at 11:53

If you add isopropanol to a concentrated solution of copper(II) sulphate (with or without the ammonia), you may find that you get two layers, and the isopropanol doesn't mix. Use methanol instead, if you can get it.

Velzee - 8-9-2015 at 11:57

Are there any other substitutes? I don't quite have the funds at the moment.

[Edited on 9/8/2015 by Velzee]

Texium - 8-9-2015 at 12:32

Quote: Originally posted by Velzee  
Are there any other substitutes? I don't quite have the funds at the moment.
Look at an auto or hardware store for Heet antifreeze (little yellow bottle) it is basically just methanol and is really cheap.