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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
Some arsenic chemistry
if you want As without sulfur, then it is easier to use realgar. One third of the arsenic in that co ...
27-12-2020 at 04:19
by: woelen
Vanadyl Sulfate crystals
Your material definitely contains vanadyl ions, but I do not think that you have vanadyl sulfate ove ...
24-12-2020 at 10:31
by: woelen
Latest chemical order?
I just did a nice energetics experiment with the orpiment. I crunched some and carefully mixed it wi ...
23-12-2020 at 06:44
by: woelen
Latest chemical order?
For this one I can say that I was really nicely surprised: https://nl.aliexpress.com/item/3301754586 ...
23-12-2020 at 04:04
by: woelen
Some arsenic chemistry
Arsenic is an element, which is not used very much in home experiments, for perfectly understandable ...
22-12-2020 at 13:08
by: woelen
Latest chemical order?
I now also ordered 100 grams of realgar, the red arsenic sulfide As4S4. Also from AliExpress for a r ...
22-12-2020 at 05:21
by: woelen
Reaction between ethylenediamine and nitrite?
[rquote=651398&tid=156701&author=woelen][...]I think I can get the experiment such that I ca ...
21-12-2020 at 00:06
by: woelen
Taking care of SO2 and NO2
I do not see how this is dangerous in a properly working fume hood. I understand that you want to ma ...
18-12-2020 at 07:26
by: woelen
Violuric acid salts (fantastic colors and variety)
[rquote=651499&tid=156755&author=woelen][...]I do have diethyl malonate. Up to now I did not ...
18-12-2020 at 01:14
by: woelen
Violuric acid salts (fantastic colors and variety)
This is really remarkable. I missed this thread up to now, but what most strikes me is the different ...
17-12-2020 at 00:56
by: woelen
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