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Sulfuric acid purification
[rquote=192502&tid=14857&author=hissingnoise]At its boiling point (337*C), sulphuric acid is ... |
14-11-2010 at 02:10
by: unionised |
'Zerostat' antistatic guns - help me settle a bet
The click noise is due to the thing sparking internally. When it does that, of course, it just waste ... |
13-11-2010 at 10:27
by: unionised |
Oxone?
"if the MSDS only mentions "Oxone" then it should be pure oxone correct?"
Things may differ from on ... |
7-11-2010 at 02:34
by: unionised |
determing % in CH2O solution?
There are a number of approaches. In my experience the iodimetric one is better than the one based o ... |
5-11-2010 at 10:19
by: unionised |
Solvent recovery
Thanks for the reply. I doubt this will carry much weight with my boss, but it's worth a try.
Anyon ... |
3-11-2010 at 11:47
by: unionised |
Solvent recovery
The stuff is an extract in DCM from soil.
There's some stuff dissolved in it from the soil. That st ... |
1-11-2010 at 14:17
by: unionised |
Solvent recovery
The only significant volatile impurity would be water and that would settle out. They are extracts f ... |
1-11-2010 at 11:29
by: unionised |
Solvent recovery
OK, first off, sorry if this is in the wrong place or has been asked before. The search didn't find ... |
31-10-2010 at 12:04
by: unionised |
Metal from phone in HCl (nickel?)
Have I missed something here?
We seem to be discussing nickel chemistry in a thread about something ... |
31-10-2010 at 11:57
by: unionised |
Metal from phone in HCl (nickel?)
"I tried to catch these metals with magnet and nothing happened. "
" Maybe this could be nickel?"
... |
31-10-2010 at 10:19
by: unionised |
zinc peroxide
[rquote=191335&tid=14750&author=psychokinetic]Sodium hypochlorite doesn't liberate oxygen.[/ ... |
28-10-2010 at 09:50
by: unionised |
Trioxane depolymerization
Please don't mix HCl with formaldehyde (or its precursors)
You get this
http://en.wikipedia.org/wi ... |
26-10-2010 at 12:47
by: unionised |
Distinguishing two compounds
Lassaigne sodium fusion test and look for sodium chloride?
You are probably most of the way there i ... |
24-10-2010 at 08:33
by: unionised |
Solvent systems.
"I think that triethyl borate would give you a spectacular green flame."
Possibly twice. Once as a ... |
8-10-2010 at 09:38
by: unionised |
Dissolving Mainboards in HCl :: Dangerous ?
I don't know about Sb in the solder but I'd be wary of Ga As in LEDs etc.
Anyway, most of the wirin ... |
29-9-2010 at 11:36
by: unionised |
overheating hotplate with Al foil?
[rquote=188330&tid=14538&author=mnick12]It depends on how strong of a vacuum your pulling. [ ... |
26-9-2010 at 04:36
by: unionised |
galvanic cell
"cant we produce electrical energy using one solution ? "!
We can.
For example
http://en.wikiped ... |
26-9-2010 at 04:24
by: unionised |
Why has Mg no flame color ?
[rquote=187897&tid=14507&author=len1]When one takes an EE or EA spectrum, one always uses a ... |
20-9-2010 at 06:40
by: unionised |
Why has Mg no flame color ?
Most of the radiation you see from a Mg flame is from hot MgO. Like most solids it has, at best, ver ... |
20-9-2010 at 05:28
by: unionised |
Potassium sulphate insoluble residue...
It would be cynical to ask what adding sand to K2SO4 would do for their profit and loss account.
To ... |
20-9-2010 at 03:17
by: unionised |
Azeotropic Distillation
I don't think there's a thread about azeotropes in general; but there is at least one about that par ... |
20-9-2010 at 03:15
by: unionised |
Chromium alum crystallisation problem
I think that solubility should be 22.4 or 24 rather than 224.
I have had a similar problem with c ... |
4-9-2010 at 12:26
by: unionised |
explosive nitrite esters
I'm not sure about "For example butyl nitrite and amyl nitrite are legally sold as recreational drug ... |
29-8-2010 at 02:12
by: unionised |
Strange purple compound when oxidizing p-aminophenol
I wonder if it's related to this
http://en.wikipedia.org/wiki/Mauveine
|
25-8-2010 at 11:06
by: unionised |
gold ring weight loss
We noted a similar loss of material from one of our check weights in the lab A 500mg Ta weight lost ... |
23-8-2010 at 11:01
by: unionised |
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