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Make Potassium (from versuchschemie.de)
I've now got the result that Mg from a pencil sharpener works pretty fine while my phlegmatised 99% ... |
15-2-2011 at 14:01
by: Per |
Ethylchloride preparation
wouldn't give a reasonable result, but ethanol is OTC as spirit with 94% ethanol. also is't recommen ... |
15-2-2011 at 13:56
by: Per |
platinum crystal growing
Has anybody an idear how they've been growing such an platinum crystal:
http://www.google.de/imgr ... |
6-2-2011 at 04:40
by: Per |
Make Potassium (from versuchschemie.de)
thermodynamic back and force, I tried it with low boiling paraffin and isopropanole.
first I heated ... |
6-12-2010 at 14:08
by: Per |
good video
http://www.youtube.com/watch?v=pdIA0jeW-24
fortunately it has an english subtitle...
it is about ... |
24-5-2009 at 00:26
by: Per |
Ir in perchlorate cell
Thanks, the google book states that perchlorate could also be produced with UV activated oxigen, don ... |
23-4-2009 at 09:43
by: Per |
Cr2O3 can be dissolved in water easily
[quote] This does not work. HCl immediately reacts with bromate, giving Cl2 and Br2 and no acid rema ... |
18-4-2009 at 01:51
by: Per |
Cr2O3 can be dissolved in water easily
May it could be an interesting attempt just to use HCl instead of the sulfuric acid because it can b ... |
14-4-2009 at 14:32
by: Per |
Ir in perchlorate cell
Interesting, not for practical purposes but the mechanism. It seems that the formed ClO2 oxidises th ... |
21-3-2009 at 07:52
by: Per |
Ir in perchlorate cell
I know that from chromates and dichromates but I´ve never heard that chlorates can be converted wit ... |
15-3-2009 at 05:14
by: Per |
Ir in perchlorate cell
The temperature must be controlled, otherwise the formed perchlorate would decompose further to pure ... |
13-3-2009 at 08:46
by: Per |
Ir in perchlorate cell
Destroying chlorates with reducers:
I would prefer the thermal decomposition of chlorate into perch ... |
7-3-2009 at 09:17
by: Per |
Ir in perchlorate cell
"I used OTC (well, not in germany, but in France at that time- nowadays very hard to find even there ... |
3-3-2009 at 12:16
by: Per |
periodic acid solution, evaporate without reduced pressure?
The first thing I can´t understand at this prescription is that the conc. HNO3 should be also disti ... |
2-3-2009 at 11:46
by: Per |
Ir in perchlorate cell
Believe me, the Pt wire was really eroded, not just at the surface.
I never heared that HCl is ab ... |
2-3-2009 at 11:35
by: Per |
Ir in perchlorate cell
I undertook a few attempts in test tube and a few in a florence flask, with the test tubes I got jus ... |
1-3-2009 at 09:03
by: Per |
Ir in perchlorate cell
All my attempts started with a almost concentrated NaCl solution and a platinum wire, 7-14V and temp ... |
22-2-2009 at 11:57
by: Per |
Ir in perchlorate cell
I´ve now the chance to buy an Iridium foil so I´ve asked myself if it could be employed in a perch ... |
22-2-2009 at 03:14
by: Per |
Highly concentrated H2O2 by extraction with CCl2H2
I tried it yesterday at myself, with conz. H2SO4, almost no H2O2 goes into the CH2Cl2 phase, I tried ... |
10-2-2009 at 12:06
by: Per |
Highly concentrated H2O2 by extraction with CCl2H2
It is well known that 100% nitric acid can be extracted with CCl2H2 from dilute nitric acid and H2SO ... |
8-2-2009 at 02:38
by: Per |
Peroxymanganates
The German papers says that the Peroxymanganates could be prepared under cooling to -15°C and stron ... |
14-12-2008 at 14:13
by: Per |
The short questions thread (1)
I heated once concentrated sulphuric acid with 80% acetic acid, after a while it a few black particl ... |
13-9-2008 at 09:34
by: Per |
HOOC-COOH + SOCl2 -> ClOC-COCl ?
Triethylamine hydrochloride is readily available for me, so this step isn´t a problem anymore, thx. ... |
7-9-2008 at 01:33
by: Per |
HOOC-COOH + SOCl2 -> ClOC-COCl ?
Why making the work of removing the ethylene oxalate from the flask, just adding the solvent, CCl4 o ... |
6-9-2008 at 08:47
by: Per |
HOOC-COOH + SOCl2 -> ClOC-COCl ?
So this process seems far more economically than the french process and it would be the first time I ... |
6-9-2008 at 04:34
by: Per |
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