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KCl or KHCO3 / K2CO3 from KNO3
Maybe look for a source for food grade KCl? Where I live, I can buy snow white 99.9% pure KCl, EUR 1 ...
25-1-2021 at 02:42
by: woelen
The simplest preparation of sulfuric acid?!
[rquote=644239&tid=79548&author=Tsjerk]This reaction works and is nearly quantitative. I add ...
25-1-2021 at 01:51
by: woelen
Ammonium ozonide
Both types of videos have a place besides each other. I also enjoy the remarkable chemistry, demonst ...
25-1-2021 at 01:16
by: woelen
Rare and hard to obtain chemicals for sale
I also am very happy with an order from chemship1978.
Perfect service and the materials were very w ...
20-1-2021 at 07:32
by: woelen
Copper II Chloride From Cu2(OH)2CO3 & HCl
A practical method: Just use some excess copper carbonate and allow the mix to react for a day or so ...
20-1-2021 at 04:20
by: woelen
Pretty Pictures (2)
That looks really nice. I have the ZnS:Cu variation, but I did not know of the other beautifully col ...
19-1-2021 at 00:30
by: woelen
Copper dibromodiiodocadmate
Depends on how much KI you add to CuSO4. If you add excess KI, then no solid iodine will be visible, ...
18-1-2021 at 00:17
by: woelen
Copper dibromodiiodocadmate
I think that the combination of copper(II) and iodide is not a stable one. Copper(II) oxidizes iodid ...
17-1-2021 at 12:26
by: woelen
EU ban for sulphuric acid, nitric acid and nitromethane
Indeed detritus it will be . . .
17-1-2021 at 03:45
by: woelen
THIS WILL BE ILLEGAL IN FEBURARY 2021 (EU)
In some countries of the EU it will be possible to obtain a license for using H2SO4 or HNO3 at highe ...
16-1-2021 at 03:48
by: woelen
How to make Sodium chlorite??
My mistake, the process is as follows:
- Make ClO2 from NaClO3, HCl and some reductor (frequently, ...
12-1-2021 at 00:05
by: woelen
How to make Sodium chlorite??
It is made commercially by reducing NaClO3 with H2O2 at high pH.

But it can be purhased online (e ...
11-1-2021 at 12:59
by: woelen
Very dizzy after melting sulfur - what happened?
Melting sulfur does not produce H2S. I have melted sulfur myself many times, and not just a single g ...
11-1-2021 at 01:42
by: woelen
Purple acid, N2O2HSO4
The acid can be obtained in quite high concentrations, such that even 2 cm of liquid is nearly black ...
9-1-2021 at 13:00
by: woelen
Purple acid, N2O2HSO4
I did some experimenting, and I succeeded in making some of the purple acid! It's a somewhat elusive ...
7-1-2021 at 12:52
by: woelen
Purple acid, N2O2HSO4
[rquote=652687&tid=156855&author=Diachrynic]Here are the relevant Gmelin pages. Might transl ...
7-1-2021 at 06:15
by: woelen
Ozone. Very easy
All chemicals are expensive where I live. Safety regulations, storage, transport regulations, handli ...
6-1-2021 at 12:21
by: woelen
Ozone. Very easy
Chlorosulfonic acid is appr. 45 euros for me per 500 ml. I can buy that without issues.

Oleum 65% ...
6-1-2021 at 04:18
by: woelen
Purple acid, N2O2HSO4
Several years ago, I discovered a very intensely colored blue complex of copper with nitrite in stro ...
6-1-2021 at 04:12
by: woelen
Ozone. Very easy
The book is not in digital form, I have the actual old book in paper form, so giving it is not possi ...
5-1-2021 at 13:57
by: woelen
Purple acid, N2O2HSO4
This really is interesting! Thanks for sharing this. I certainly will try this myself and maybe I'll ...
5-1-2021 at 13:47
by: woelen
Ozone. Very easy
If you have I2O5, then things are simple. Add I2, I2O5 and concentrated H2SO4 to each other and gent ...
5-1-2021 at 07:51
by: woelen
Iodide/sulphur dioxide adducts, BaI2 x 4 SO2
Hmm... this is not good. Nearly all pages are broken :(

I fixed this single page. These pages wer ...
28-12-2020 at 13:18
by: woelen
Scandium selenite and new manganese selenite + photos
I don't belive that the dark compounds are pure MnSeO3. I expect that to be pale pink, maybe a littl ...
28-12-2020 at 06:47
by: woelen
Iodide/sulphur dioxide adducts, BaI2 x 4 SO2
I discovered this myself, 15 years ago. I wrote a webpage about this:

https://woelen.homescience. ...
28-12-2020 at 06:36
by: woelen
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