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Report on making Ammonium pentachloroferrate
This really is interesting. I did not know of this compound. Maybe add a few drops of conc. HCl to t ...
25-10-2020 at 02:03
by: woelen
Preparation of Red Selenium Gone Wrong
Pour some bleach through the glass frit. Even better is to use bleach, to which a little HCl is adde ...
21-10-2020 at 23:27
by: woelen
Experiment report: Cobalt Molybdate, amazing colors and a collloidal mystery
[rquote=647030&tid=156360&author=valeg96]If you liked the fast settling of precipitate, a si ...
21-10-2020 at 06:25
by: woelen
Preparation of Red Selenium Gone Wrong
You need to heat the liquid. Be careful with little droplets coming from the liquid if it is boiling ...
21-10-2020 at 02:59
by: woelen
Experiment report: Cobalt Molybdate, amazing colors and a collloidal mystery
First I want to add that your write-up is an example of excellent home chemistry. This is the kind o ...
20-10-2020 at 23:30
by: woelen
Sulfuric acid,acetone brown coloring???
I think the message is clear to Meri. I also warned him in my post to be extremely careful and give ...
19-10-2020 at 06:12
by: woelen
Ballistic gel
[rquote=646723&tid=156332&author=EthidiumBromide][...]Dilute solutions of nitric acid furthe ...
19-10-2020 at 05:25
by: woelen
Latest chemical order?
I received the following chemicals:

- 300 grams of inositol for making rhodizonic acid and potass ...
19-10-2020 at 02:12
by: woelen
Sulfuric acid,acetone brown coloring???
Acetone peroxide is made in aqueous solution. You mix some acetone with dilute acid (e.g. 20% HCl or ...
19-10-2020 at 01:53
by: woelen
Chlorite salts
I have experience with lead chlorite. This material indeed is explosive, without the need of any add ...
18-10-2020 at 23:44
by: woelen
Crystallization of NaClO2 from solution?
I know from experience that NaClO2 is quite stable. I have a 28% solutoin and I left some of this in ...
14-10-2020 at 08:54
by: woelen
Lethal dose of mercuric nitrate
If you have KMnO4, then first do several experiments with that and check your workbench and tools af ...
12-10-2020 at 09:44
by: woelen
Drying Calcium Chloride Safely after soaked in Diethyl Ether?
Ether is very volatile. I simply would put it outside in air for a while and once it looks reasonabl ...
8-10-2020 at 23:36
by: woelen
Another remarkable copper(II) complex
I made the cesium salt CsFeCl4. That one is rusty orange, so that color you show in your picture mat ...
8-10-2020 at 01:20
by: woelen
Even HDPE Bottles Aren't Immune to Chemical Attack
Btw., could you please change the size of your pictures? Scale them down to 800 pixels width or so, ...
28-9-2020 at 23:59
by: woelen
Even HDPE Bottles Aren't Immune to Chemical Attack
Is that black stuff sulfuric acid? Looks awful.
I recently purchased 4 liters of drain cleaner acid ...
28-9-2020 at 23:54
by: woelen
Some chemistry pictures from a long time forum lurker
Welcome! Very good to see you here on sciencemadness. Your contributions will be appreciated!
28-9-2020 at 04:32
by: woelen
2020 Secret Santa Sign In [OPEN FOR LATECOMERS]
Matching me with someone in the EU also would be nice for me, but it is not mandatory.
28-9-2020 at 00:32
by: woelen
Sodium sulphite spontaneous oxidation
The heptahydrate is the form, which was sold 40 years ago. As a teenage boy I also used the heptahyd ...
26-9-2020 at 23:57
by: woelen
2020 Secret Santa Sign In [OPEN FOR LATECOMERS]
I have seen the Secret Santa threads the last few years, and I have seen the fun of it.
Now I am in ...
25-9-2020 at 03:58
by: woelen
Has anyone dissolved Titanium Dioxide?
If you manage to get some titanium dissolved in its +4 oxidation state, then you could try HCl + zin ...
24-9-2020 at 23:33
by: woelen
Using industrial chemical processes at home
These processes are industrial processes and they are so for a good reason. Some processes simply ar ...
24-9-2020 at 07:15
by: woelen
Has anyone dissolved Titanium Dioxide?
TiO2 is very inert. You can get it dissolved, but only in molten salts like NaHSO4. You need quite s ...
23-9-2020 at 23:17
by: woelen
Is it too much to ask to wear a mask?
I believe that these masks are totally useless. I never used one and never will use one. You cannot ...
19-9-2020 at 10:01
by: woelen
Ammonium bromide route for rare earth bromides
Ce2O3 is not oxidizing. Cerium can exist in two oxidation states, +4 and +3. It is quite strongly ox ...
19-9-2020 at 09:43
by: woelen
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