Romix
Hazard to Others (Literally)
Posts: 483
Registered: 19-6-2015
Member Is Offline
Mood: No Mood
|
|
Blood red substance dropping out of mixed metal ion solution
When NaSO3 or Na2S2O5 added to a solution of mixed metal ions, this blood red substance drops out, copper will be in the highest concertation of all
there, traces of others. So I think it is a copper salt.
Any one got any ideas what it can be? Did experiment with both NaSO3 and Na2S2O5, both forming it. In future might try bubbling SO2 gas in to
solution of mixed metal ions, to see if the same substance will form. This substance completely prevents recovery of gold, only reagent works with
dirty solutions is FeSO4...
Decomposed sample of it to black oxide, coloring the flame copper green and nitrate of it were green too...
[Edited on 5-12-2023 by Romix]
|
|
DraconicAcid
International Hazard
Posts: 4320
Registered: 1-2-2013
Location: The tiniest college campus ever....
Member Is Offline
Mood: Semi-victorious.
|
|
https://en.wikipedia.org/wiki/Chevreul%27s_salt
Please remember: "Filtrate" is not a verb.
Write up your lab reports the way your instructor wants them, not the way your ex-instructor wants them.
|
|
Romix
Hazard to Others (Literally)
Posts: 483
Registered: 19-6-2015
Member Is Offline
Mood: No Mood
|
|
Thank you!
|
|
Boffis
International Hazard
Posts: 1863
Registered: 1-5-2011
Member Is Offline
Mood: No Mood
|
|
Depending on the source of your mixture it could also be selenium. I have encountered this when working with copper anode slimes. A little selenium
goes a long way. If its selenium the fine red suspension coagulates to a glassy black foam like slag if boiled.
|
|
wg48temp9
National Hazard
Posts: 782
Registered: 30-12-2018
Location: not so United Kingdom
Member Is Offline
|
|
It could also contain one of the isomorphic series of double sulphites that contain CuII replaced with Fe, Mn, or Cd.
see Attachment: document7.pdf (554kB) This file has been downloaded 112 times
I am wg48 but not on my usual pc hence the temp handle.
Thank goodness for Fleming and the fungi.
Old codger' lives matters, wear a mask and help save them.
Be aware of demagoguery, keep your frontal lobes fully engaged.
I don't know who invented mRNA vaccines but they should get a fancy medal and I hope they made a shed load of money from it.
|
|
Rainwater
National Hazard
Posts: 913
Registered: 22-12-2021
Member Is Offline
Mood: indisposition to activity
|
|
if your attempting to refine gold , you now know the importance of removing the base metals before
bringing everything into solution.
You can use thermal decomposition to convert these sulfur compounds into oxides,
Then molten lead, zinc, or copper, will reduce the oxides back to metal and your back at the beginning.
"You can't do that" - challenge accepted
|
|
digga
Harmless
Posts: 43
Registered: 11-6-2018
Member Is Offline
|
|
Chevreuls Salt???
|
|