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Everyday Chemistry
I ordered the large amount of NaNO2 just to have an easy and cheap way of making NO and NO/NO2 mix. ...
21-9-2017 at 03:10
by: woelen
Everyday Chemistry
Getting sodium nitrate or potassium nitrate becomes more and more difficult in the EU. Where I live, ...
20-9-2017 at 23:53
by: woelen
How dangerous is potassium ferricyanide?
Potassium ferricyanide is marginally toxic. The cyanide ions are very tightly bound to the iron core ...
15-9-2017 at 04:43
by: woelen
Mysterious compound
If you have access to nitrite, then you can check for thiocyanate as follows:

Dissolve some of th ...
14-9-2017 at 10:19
by: woelen
Manganese dioxide flammable?
It is not flammable. If the wiki page says so, then that page is in error.

It can support or inte ...
13-9-2017 at 04:35
by: woelen
Osmium tetroxide decomposition
The dangers of OsO4 are somewhat exaggerated over here. The way it is stored, it is quite safe, just ...
12-9-2017 at 22:40
by: woelen
Cheap gold trichloride
If it sounds too good to be true, then usually it isn't true!

This cannot be real. It is describe ...
11-9-2017 at 00:17
by: woelen
What makes Nitromethane yellow?
Nitromethane forms very dark red compounds in contact with alkali. Just try adding a drop of nitrome ...
6-9-2017 at 22:40
by: woelen
Chromium(III) oxide from K2Cr2O7
I would not do that. The reaction is very incomplete and certainly does not work smoothly. Just try ...
6-9-2017 at 09:41
by: woelen
Chromium(III) oxide from K2Cr2O7
Dithionite is a fast reductor, but not very clean. It gives decomposition products, which may lead t ...
6-9-2017 at 00:30
by: woelen
Wikipedia List of Commonly Available Chemicals
This is a nice list, but unfortunately it is not like that anymore in the EU. Quite a few chemicals ...
5-9-2017 at 03:24
by: woelen
Total chlorine
The so-called total chlorine can be described easily. It is the total amount of elemental chlorine, ...
5-9-2017 at 03:20
by: woelen
Got Ink?
The only really hazardous chemical is phenol. You should avoid exposure of your skin to the solid or ...
5-9-2017 at 03:13
by: woelen
White Phosphorus video
Interesting to see all the white specks of light. It looks as if the surface becomes a little wet wh ...
1-9-2017 at 08:01
by: woelen
Safe Disposal of Sodium Chlorite
Dissolved sodium chlorite is not that dangerous. Just flush it through the toilet if you really want ...
31-8-2017 at 11:42
by: woelen
Everyday Chemistry
If you like these quantitative things, then you may like these experiments:

http://woelen.homesci ...
24-8-2017 at 07:24
by: woelen
Issues with stannous sulfate
Your main problem is hydrolysis. Sn(2+) ions can hardly exist in water at medium pH. They hydrolyze ...
23-8-2017 at 22:58
by: woelen
Dangers/risks of Mazilli ZVS driver?
This is a real bargain:

http://www.ebay.com/itm/5Pcs-DIY-ZVS-Tesla-Coil-Power-Supply-Boost-Voltag ...
22-8-2017 at 13:13
by: woelen
Old ether bottle - open under water?
I would not worry too much about this. As I wrote in that old 2008 thread, ether is an OTC chemical ...
22-8-2017 at 03:18
by: woelen
Important chemicals for a start up lab what to get and what not to get
Tetraborofluoride is even less coordinating, but it also is much less common. For the average starti ...
21-8-2017 at 12:43
by: woelen
Last chemical order?
Not a real chemical order for experiments, but a very beautiful set of samples:
- 1 g of rubidium
...
21-8-2017 at 12:09
by: woelen
Important chemicals for a start up lab what to get and what not to get
[quote]You can probably ditch most of the transition metal nitrate salts (with the exception of silv ...
21-8-2017 at 07:08
by: woelen
Electrolysis Na2SO4
No Na2SO4 will be used up, it only serves as a means of making the liquid conductive. At the anode, ...
8-8-2017 at 23:57
by: woelen
Electrolysis Na2SO4
At the anode you don't get one of the two reactions in your post. The easiest reaction is oxidation ...
8-8-2017 at 10:38
by: woelen
Making potassium Hypochlorite?
[rquote=489935&tid=76027&author=ave369]That's what I meant (http://www.sciencedirect.com/sci ...
8-8-2017 at 07:19
by: woelen
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