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Deadly Simple Liquid Forget what I said about the benzene and other aromatics- these absorb in the UV, not in the IR rang ... |
17-4-2013 at 12:30 by: garage chemist |
Deadly Simple Liquid Can you try this with benzene, or other condensed aromatic compounds like naphthalene and benzpyrene ... |
12-4-2013 at 09:57 by: garage chemist |
Anyone interested by fluoro salts? Plante, you didn't understand the problem. The resistance of your PP labware is not important. 70% H ... |
6-4-2013 at 02:52 by: garage chemist |
Anyone interested by fluoro salts? I personally briefly possessed and handled a quantity of 72% HF in my home lab. By "briefly" I mean ... |
5-4-2013 at 11:31 by: garage chemist |
Na2Cr2O7 destroying cell? Just have a look at Ebay. There are many sellers of titanium sheet that ship worldwide.
This is th ... |
1-4-2013 at 13:48 by: garage chemist |
Na2Cr2O7 destroying cell? Stainless steel is unsuitable as a cathode since nickel ions will be formed through corrosion, and t ... |
31-3-2013 at 08:39 by: garage chemist |
Dissolving Gold with Chlorine gas A mixture of HCl and NaClO3 dissolves gold very rapidly upon warming, faster than full strength aqua ... |
10-3-2013 at 03:53 by: garage chemist |
Seeking help regarding unsuccessful sodium perchlorate cell How is your platinum electrode built? Shape, surface area, current density? Wire or sheet? Or is it ... |
8-3-2013 at 22:57 by: garage chemist |
PTFE coating easily done You need an aqueous dispersion of PTFE particles, which is an article of commerce.
Dip your metal ... |
8-3-2013 at 12:45 by: garage chemist |
What's the densest gas (or mix) you can create? The perfluorocarbons are low-boiling and have an extremely high vapor density. Simply heat perfluoro ... |
8-3-2013 at 11:30 by: garage chemist |
Ammonium nitrate purification If the impurity is calcium nitrate, adding gasoline will precipitate it as well. If it is to stay in ... |
27-2-2013 at 14:18 by: garage chemist |
Ammonium nitrate purification I do not see how adding gasoline to precipitate the AN would not precipitate the impurities as well. ... |
27-2-2013 at 13:44 by: garage chemist |
Ammonium nitrate purification Has someone already tried recrystallizing AN from methanol or ethanol? The solubility in these solve ... |
27-2-2013 at 13:32 by: garage chemist |
Bath circulator corrosion Don't use glycol/water mixes for temperatures below -15°C, they become very viscous and the pump wi ... |
12-2-2013 at 21:59 by: garage chemist |
Suitable test tubes for use with 48% HF A nice little synthesis with aqueous HF is the preparation of potassium tetrafluoroborate, KBF4. I'v ... |
10-2-2013 at 15:04 by: garage chemist |
Ether drying, amount of Na needed? You should pre-dry the ether by stirring with anhydrous CaCl2 overnight. Then let it settle, decant ... |
2-2-2013 at 13:27 by: garage chemist |
Clean Sulfur Dioxide Gas If you can actually get the bottled gas from a supplier, consider buying an old medical oxygen or ot ... |
30-1-2013 at 11:18 by: garage chemist |
Fixing sulphur of the air The other way round it makes sense: using sulfur powder to fix mercury vapors from air. I have done ... |
28-1-2013 at 11:11 by: garage chemist |
SOCl2: carboxylic acid to acid chloride: impurity! Thionyl chloride is not completely stable against heat, slightly decomposing above 100°C, giving S2 ... |
23-1-2013 at 06:18 by: garage chemist |
Extraction of HAuCl4 With Ether I meant the removal of nitric acid from aqua regia in which gold alloys have been dissolved.
I usu ... |
19-1-2013 at 12:32 by: garage chemist |
Extraction of HAuCl4 With Ether There must not be any nitric acid present when adding diethyl ether. Please do not make the typical ... |
18-1-2013 at 09:18 by: garage chemist |
Refining mercury from cinnabar That's a very interesting method neptunium. Good to see that there is also a viable wet chemical met ... |
30-12-2012 at 11:26 by: garage chemist |
Bromoskin Water isn't good for washing off bromine from skin because the solubility is too low. You were lucky ... |
17-12-2012 at 13:29 by: garage chemist |
Potassium to Sodium Borohydride Why can't you use the KBH4 as it is? Are you sure you really need NaBH4? |
14-12-2012 at 11:03 by: garage chemist |
Any simple alternatives to vacuum pumps? For several years, I have done all my filtrations and vacuum distillations with an aspirator. It's t ... |
8-12-2012 at 06:04 by: garage chemist |
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