TmNhRhMgBrSe - 21-12-2021 at 19:48
I made some potassium tartrate. It is easy to make because it very soluble. The flask remained few drops solution so I added some nickel chloride to
make nickel tartrate. Nickel tartrate is green. Later I will make more nickel tartrate and other tartrates. This is few drops mixture photo. But why
my potassium tartrate solution yellow? What impurity make it so yellow?
Texium - 22-12-2021 at 07:09
Lots of things are yellow. There’s no way to answer that without more information. What did you make your potassium tartrate from, and where did the
chemicals come from?
TmNhRhMgBrSe - 13-1-2022 at 03:03
I used KOH and tartaric acid. I some years ago buyed them in a chemical supplies shop. potassium tartrate very soluble, many days also didn't
crystalise, but sodium tartrate not so soluble, it very easy crystalise out. I tryed heat potassium tartrate solution but it still don't crystalise,
added isopropyl alcohol also no use. I also made copper tartarate, it is blue, but it has 2 types, 1 type is lighter blue, other 1 type is bluer, I
don't know need how to separate them. in the piture that 2 layers are I say that 2 types.
DraconicAcid - 13-1-2022 at 09:06
If you want to purify your tartrate, add another equivalent of tartaric acid to you potassium tartrate. Potassium hydrogen tartrate is fairly
insoluble, and crystallizes nicely.
nickel tartrate, copper tartrate
TmNhRhMgBrSe - 11-2-2023 at 08:52
Left is nickel tartrate, middle and right is copper tartrate. I don't know why copper tartrate surface grow mould.
TmNhRhMgBrSe - 5-3-2023 at 01:53
Method:
mix metal salt solution (NiCl2, CuSO4) and potassium tartrate solution, metal tartrate precipitate out.