| Search |
| [Next Page] |
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 |
| [Next Page] |
