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Bureaucratic burden of opening/running a lab
This thread leads to nothing and nowhere . . .
I close it.

[Edited on 4-8-20 by woelen]
4-8-2020 at 10:31
by: woelen
how to remove a silver oxide stain
The mildest way to get rid of the oxide layer is dissolving some NaHCO3 or Na2CO3 in water. Put a pi ...
4-8-2020 at 10:07
by: woelen
Long term storage of TACP
It is safe to store the ammine complex of copper(II) perchlorate. I made this complex myself (and I ...
22-7-2020 at 12:28
by: woelen
Strange Copper 2 chlorate + sodium chlorate complex
The lower solubility of KClO3 also makes it harder to get a decent current. So, there is a trade off ...
19-7-2020 at 08:58
by: woelen
Strange Copper 2 chlorate + sodium chlorate complex
@mysteriusbhoice: Thanks for writing all the steps. I now indeed am convinced that you made copper c ...
18-7-2020 at 11:58
by: woelen
Amazing fluorescent precipitate of copper(I) with propargyl alcohol
I now have a few pictures and videos I want to share:


A picture of the precipitate:

[file]8 ...
18-7-2020 at 11:43
by: woelen
Latest chemical order?
Some new interesting chemicals for me :)

100g K2Ni(CN)4.H2O, potassium tetracyanonickelate(II) mo ...
17-7-2020 at 06:53
by: woelen
Strange Copper 2 chlorate + sodium chlorate complex
It still is not clear to me how you make the Cu(ClO3)2. Could you provide a step by step description ...
17-7-2020 at 00:17
by: woelen
Brown crystals within green copper(II) chloride crystals - What are they?
I have written a web page about these chlorocuprates and I made the cesium salt and isolated this. T ...
16-7-2020 at 04:37
by: woelen
Most potent H2O2 decomposition catalysts available to an amateur
[rquote=640833&tid=155807&author=unionised]The reaction with permanganate is not catalytic, ...
16-7-2020 at 04:25
by: woelen
Strange Copper 2 chlorate + sodium chlorate complex
Do you really have Cu(ClO3)2? Could you make pictures of the original reagents, before you mix them? ...
15-7-2020 at 23:36
by: woelen
Removing lead oxide from lead ingots.
Very dilute HNO3 works like a charm. Use somewhere between 5% and 10% concentration, not higher. At ...
15-7-2020 at 23:16
by: woelen
Most potent H2O2 decomposition catalysts available to an amateur
I don't think that the metal ion makes a great difference, it is the iodide which does the trick. Pr ...
15-7-2020 at 23:03
by: woelen
Brown crystals within green copper(II) chloride crystals - What are they?
Copper(II) chloride indeed can be dehydrated by heating, but the resulting material becomes slightly ...
14-7-2020 at 23:31
by: woelen
Amazing fluorescent precipitate of copper(I) with propargyl alcohol
I isolated the yellow compound and dried it. The yellow compound absorbs an amazing amount of water ...
14-7-2020 at 23:26
by: woelen
Ways to precipitate sodium ions?
Hypophosphite reduces copper(II) to the hydride, you get fine crystals of CuH, when a solution of a ...
14-7-2020 at 05:23
by: woelen
KCN synthesis. Care to share your thoughts?
I would not bubble HCN in an aqueous solution of KOH. In alkaline water solution, the cyanide fairly ...
13-7-2020 at 04:58
by: woelen
Missing persons
Nicodem, good to see that you are fine. I understand what you mean with being occupied with other th ...
12-7-2020 at 09:08
by: woelen
Amazing fluorescent precipitate of copper(I) with propargyl alcohol
I tried a similar experiment with a different reductor.

I dissolved some propargyl alcohol in wat ...
10-7-2020 at 12:36
by: woelen
18K Gold sould I drop it in aqua regia.
I find this a very fishy story anyway. Someone stopping in the streets, in front of a total stranger ...
10-7-2020 at 05:24
by: woelen
Copper cyanurate (and other cyanurates}
I would not call that pink. I have the impression that the pure compound would be (nearly) white, bu ...
10-7-2020 at 01:32
by: woelen
sodium or potassium dichromate.
I would go for 250g of K2Cr2O7 and 100g of Na2Cr2O7.2H2O. Then for $40 you have both.
10-7-2020 at 01:25
by: woelen
sodium or potassium dichromate.
I personally like potassium dichromate more than the sodium salt. It is anhydrous, the sodium salt i ...
9-7-2020 at 23:38
by: woelen
Super simple sulfuric acid from bisulfate->pyrosulfate->hydrolysis?
Wikipedia is notalways right when it comes to specific properties of chemicals. I have corrected qui ...
9-7-2020 at 23:30
by: woelen
Super simple sulfuric acid from bisulfate->pyrosulfate->hydrolysis?
Adding sodium pyrosulfate to water simply leads to formation of sodium bisulfate:

Na2S2O7 + H2O - ...
9-7-2020 at 06:28
by: woelen
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