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Dielectric constant of liquid iodine
I'd expect it to have a very high polarisability, but over 100 seems too high.

It's not going to ...
9-4-2019 at 12:04
by: unionised
Whoosh bottle experiment
"why shouldn't we use glass bottles while plastic works?"
https://en.wikipedia.org/wiki/Shrapnel_sh ...
8-4-2019 at 11:24
by: unionised
Potassium ethoxide
I think commercial KOH may have more water in than commercial NaOH.
7-4-2019 at 08:57
by: unionised
Potassium ethoxide
[rquote=607684&tid=147484&author=Tsjerk]This has been done for sodium ethoxide, there is a v ...
7-4-2019 at 08:11
by: unionised
Peptide synthesis is awesome
"Peptide synthesis is awesome"
Well, I wouldn't say that, but it's growing on me.
7-4-2019 at 04:29
by: unionised
Hazardous chemicals
Most people have found out what Cu++ ions taste like by handling copper coins, then eating stuff wi ...
7-4-2019 at 01:21
by: unionised
Hazardous chemicals
IIRC the limit set by WHO for copper compounds in drinking water is due to taste, rather than toxici ...
5-4-2019 at 09:34
by: unionised
Testing for lead or it's oxides - best method?
[rquote=607278&tid=147290&author=woelen]A At 1 ppt (part per trillion) you won't even smell ...
3-4-2019 at 12:26
by: unionised
distilled water for diy ph calibration solution ?
[rquote=607057&tid=147206&author=CharlieA]I would think that a decent pH meter would read 7 ...
1-4-2019 at 13:06
by: unionised
DIY High Energy Capacitor for pulsed power
The trouble with nanosecond timescales and water caps is that the speed of EM radiation in water (ne ...
1-4-2019 at 12:48
by: unionised
DIY High Energy Capacitor for pulsed power
For cold pure water the resistivity is 0.18 Mohm metres.
And the dielectric constant is about 80 an ...
1-4-2019 at 11:37
by: unionised
Mercury cleanup
[rquote=606954&tid=147173&author=Sulaiman]Mercury has a vapour pressure of 0.5 to 1 Pa at ty ...
31-3-2019 at 05:38
by: unionised
scrap zirconium souces
[rquote=606752&tid=146880&author=Herr Haber]Yeah, for drinking :)

Russian guy selling Zir ...
28-3-2019 at 12:34
by: unionised
Peptide synthesis is awesome
There are also a few legal issues.
Patents, licensing compliance etc.

The companies that did the ...
17-3-2019 at 06:29
by: unionised
Yellow ether?
Acetaldehyde can be formed from peroxides I think.
Air will certainly oxidise ethanol, so, unless y ...
10-3-2019 at 13:46
by: unionised
Yellow ether?
At a guess, traces of acetaldehyde (from oxidation of the ethanol) which polymerises in alkaline con ...
10-3-2019 at 01:11
by: unionised
Spirulina
[rquote=604598&tid=145701&author=BlueThumbDev]I understand the dangers of isolating anything ...
6-3-2019 at 13:17
by: unionised
Dimethylmercury
[rquote=604534&tid=146072&author=urenthesage] I dont know if it is produced when in the pres ...
5-3-2019 at 14:14
by: unionised
Spirulina
[rquote=604525&tid=145701&author=Tsjerk]
As long as you don't drink the supernatant you sho ...
5-3-2019 at 11:24
by: unionised
Spirulina
[rquote=604433&tid=145701&author=Nate] if you know what you're doing and have the right equi ...
5-3-2019 at 11:19
by: unionised
Spirulina
Am I right in thinking that there are some cyanobacteria that you really don't want to play with?
h ...
4-3-2019 at 11:40
by: unionised
How can i extract elemental mercury from mercury(II) iodide?
I'm fairly sure that an alkaline solution of mercury iodide in KI can be reduced by formaldehyde or ...
28-2-2019 at 13:37
by: unionised
Hydrogen peroxide from ozone and water?
I'm fairly sure you can photolyse ozone to give essentially a free oxygen atom (and O2) .
And I cou ...
24-2-2019 at 09:07
by: unionised
Hydrogen peroxide from ozone and water?
[rquote=603427&tid=145456&author=hissingnoise]

Its cost of production is so high that int ...
24-2-2019 at 06:17
by: unionised
New proposal for EU regulations
[rquote=603317&tid=145219&author=Tsjerk]


OK, we might have some regulations being pushe ...
23-2-2019 at 10:49
by: unionised
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