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Small amount of cyanide in Europe?
Interesting, so nowadays, they oxidize sulfide. Apparently the thiosulfate nowadays is separated fro ...
18-1-2022 at 12:04
by: woelen
Small amount of cyanide in Europe?
[rquote=670038&tid=158274&author=teodor]That means that the man who asks for 1kg+ has no dep ...
18-1-2022 at 00:06
by: woelen
Small amount of cyanide in Europe?
A 100 grams of cyanide is a huge amount for one application, while being only a little amount for an ...
14-1-2022 at 00:06
by: woelen
Dimethylamine identification help
I think, I prefer the basic route. The material does have a smell for me, but I do not perceive it a ...
12-1-2022 at 05:04
by: woelen
Some experiments with cyanate ion
I did the following experiment:
- Dissolve approximately 150 mg of NaOCN in 4 ml of distilled water ...
11-1-2022 at 01:45
by: woelen
Dimethylamine identification help
I have dimethylformamide. I read about synthesis of dimethylamine with that, using HCl and heating f ...
10-1-2022 at 03:57
by: woelen
Some experiments with cyanate ion
I'll try and see what pH the cyanate solution has. I can also add a solution of some MnSO4 to it. I' ...
9-1-2022 at 23:57
by: woelen
Burning GOLD to oxid
Heating the gold will not work. You may get it so hot, that it melts, but certainly if you have a bu ...
4-1-2022 at 00:45
by: woelen
Attempt to make iron iii oxalate
I have some doubt on the "ferric oxalate". Actually, ferric oxalate is an ill-defined species, which ...
4-1-2022 at 00:30
by: woelen
How common is long-term loss of smell if you get Omicron while vaccinated?
One of my daughters and her husband had corona in November. Mild symptoms. Our daughter still has we ...
3-1-2022 at 12:06
by: woelen
fun with acetylene
[rquote=669333&tid=158224&author=Bedlasky][rquote=669318&tid=158224&author=woelen]
...
29-12-2021 at 04:54
by: woelen
fun with acetylene
@Metacelsus: I also once made dichloroacetylene by accident, but that cannot be made from acetylene. ...
28-12-2021 at 04:13
by: woelen
fun with acetylene
Right now, near the end of the year, you can buy calcium carbide in the Netherlands at many places f ...
27-12-2021 at 13:50
by: woelen
Short report on making K2[MoOCl5] and K2[MoOBr5]
Very interesting syntheses. I hope to find some time for these during the christmas holidays.

Th ...
24-12-2021 at 00:08
by: woelen
N2O3 extraction in dichloromethane
Yes, I know the compound NOClO4, and I already made this.

It works much better with HClO4. Just ...
21-12-2021 at 04:30
by: woelen
N2O3 extraction in dichloromethane
I did a little experiment with making of N2O3 and checked how concentrated one can get this without ...
19-12-2021 at 07:17
by: woelen
Making KBrO3 using Ca(OCl)2 and bromide.
Ca(ClO)2 is not restricted in the EU, as far as I know. In NL you also still can buy this without an ...
18-12-2021 at 06:57
by: woelen
anti "spam-bot" Bot?
Requests for getting an account on sciencemadness always are personal emails, and each request diffe ...
17-12-2021 at 08:00
by: woelen
Project: Making thionyl chloride from easy-to-get precursors
Very nice result, both the making of SO3 and the making of SCl2!
Heating a glass vessel to well ove ...
15-12-2021 at 14:04
by: woelen
The Short Questions Thread (4)
[rquote=667055&tid=25055&author=arkoma]Have about .5l chrome VI waste and I don't want to us ...
14-12-2021 at 00:54
by: woelen
Latest chemical order?
I ordered 4 small bottles of CH2Cl2 (4 x 500 ml), now that it still is possible to obtain this. It l ...
12-12-2021 at 11:19
by: woelen
WARNING: Explosive reaction between pool chlorine chemicals
[rquote=668480&tid=158161&author=theAngryLittleBunny]
Hmm? I said I added it to benzaldehyd ...
11-12-2021 at 14:33
by: woelen
Using sodium bisulphate instead of sulphuric acid
That's a totally different thing. Recovering the HCl certainly is possible. Just add solid NaHSO4 to ...
10-12-2021 at 13:58
by: woelen
Using sodium bisulphate instead of sulphuric acid
You would not have pure iron(III) sulfate, but a mix of sodium sulfate and iron(III) sulfate.
Besid ...
10-12-2021 at 11:18
by: woelen
WARNING: Explosive reaction between pool chlorine chemicals
In the last reaction, you probably confused the use of TCCA with the use of cyanuric chloride. TCCA ...
10-12-2021 at 02:50
by: woelen
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