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Purefy Silver with Acetic Acid
If the metals are finely divided you could try heating them in air at a temperature above the decomp ...
22-9-2011 at 16:29
by: not_important
Preparation of elemental phosphorus
NaNH4HPO4 AKA Microcosmic Salt is old school, there's plenty of detailed preps out on the Net, many ...
22-9-2011 at 15:38
by: not_important
File Size
For Windows IrfanView (free) will let you resize images, as well as set the compression level for jp ...
22-9-2011 at 14:57
by: not_important
Purefy Silver with Acetic Acid
Formic acid__may__ do the job, it' s used to remove the surface film of copper formed when old corro ...
22-9-2011 at 14:53
by: not_important
Purefy Silver with Acetic Acid
It's been sad many times before in other threads (UTFSE), either

A) ppt AgCl, wash, reduce to th ...
22-9-2011 at 12:32
by: not_important
Voltage varying centrifuge problem
Spec sheet sez "brushless AC motor", rather good chance of it being locked to and designed for the p ...
22-9-2011 at 07:06
by: not_important
Voltage varying centrifuge problem
Well, what rotational speed do you need for that g force? Wiki has the formula you need, I'd bet.
...
21-9-2011 at 20:57
by: not_important
Hydrogen from Aluminum and Water Economically
Note that the energy loss in going from elemental Al to H2 to some sort of work is fairly high. The ...
21-9-2011 at 17:39
by: not_important
what is this
The kong thing is a condenser, I believe. It's both a outer jacket and an inner coil model, I've se ...
20-9-2011 at 18:13
by: not_important
Potassium Carbonate from Potassium Sulfate? K2S04 ---> K2C03
In water, mix K2SO4 and Ca(OH)2, gently boil for some time K2SO4 + Ca(OH)2 <=> 2 KOH + CaSO4. ...
20-9-2011 at 05:23
by: not_important
The lead salts preparation thread!
[rquote=221860&tid=5490&author=watson.fawkes]...Not sure about your sample in particular, bu ...
16-9-2011 at 06:08
by: not_important
Benzhydrol--->bromodiphenylmethane
Once again I'd say don't have H2SO4 in the reaction mix, if anything have an excess of the alkali br ...
14-9-2011 at 21:53
by: not_important
Benzhydrol--->bromodiphenylmethane
As I recall benzyl alcohol will react with cold concentrated aqueous HCl, O'd expect similar from be ...
13-9-2011 at 06:38
by: not_important
The lead salts preparation thread!
Don't even need H2O2, just bubble air through the acetic acid with the lead in that. The more surfa ...
12-9-2011 at 06:58
by: not_important
Lead containing Vinegar
[rquote=221659&tid=17497&author=shivas]...
I have already heard many times that there are n ...
12-9-2011 at 06:55
by: not_important
Isolation of thorium metal
Most thorium minerals contain REE (Lanthanides) and other metals as well, you do need to do a fair a ...
7-9-2011 at 07:34
by: not_important
Solar energy a pipe dream?
That's a real challenge, getting the very open form of CeO2, then heating to 1500 and quenching to 9 ...
7-9-2011 at 05:58
by: not_important
butanol extraction
Water and n-butanol have an azeotrope that boils at 93 C, I think the split is around 45% water and ...
7-9-2011 at 05:49
by: not_important
dry vacuum column chromatography
Sounds as if the linked article plus a paper it references, [i]Dry Column Vacuum Chromatography, D.S ...
5-9-2011 at 08:19
by: not_important
Benzoic Acid from Benzoin Resin
Via dry distillation, but it's expensive and the yield is generally low.

You can also oxidise pol ...
5-9-2011 at 08:10
by: not_important
Oxalic acid from Tea
[rquote=221102&tid=17444&author=Chemistry Alchemist]with the sawdust and sodium hydroxide me ...
5-9-2011 at 08:06
by: not_important
Oxalic acid from Tea
See the attached PDF.


[file]15856[/file]

If you're up for experimentation, oxalic acid has ...
4-9-2011 at 06:33
by: not_important
Protect a thermocouple?
Alternatives to mercury are silicon oil if the temperature range isn't too high, small solid glass b ...
4-9-2011 at 06:26
by: not_important
Substitute high boiling point solvent
Depends on the reactants different solvents may or may not be compatible with the reagents and produ ...
1-9-2011 at 06:36
by: not_important
ethyl acetate - non-acetone nail polish remover
Most common desiccants lose effectiveness at moderate temperatures, thus distilling from them does l ...
31-8-2011 at 06:14
by: not_important
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