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Removing denaturing agents from alcohol
Just to note - producing pure ethanol from vodka or sugar wash is a different story than recycling u ...
9-6-2020 at 14:39
by: nimgoldman
Drying IPA - easiest method
Sorry for bumping the thread, I wanted to clarify how much salt is actually needed...

Assume 1 00 ...
9-6-2020 at 14:26
by: nimgoldman
Removing denaturing agents from alcohol
Small amounts of ethanol can be purified via ester formation, purifying the ester, then hydrolyzing ...
29-5-2020 at 23:00
by: nimgoldman
Removing MeNO2/EtNO2 contamination in MeOH/EtOH
No I definitely never distill to dryness.

Actually I first neutralize any residual base (after th ...
16-5-2020 at 17:33
by: nimgoldman
Removing MeNO2/EtNO2 contamination in MeOH/EtOH
I have several liters of methanol and ethanol, likely contaminated with nitromethane/nitroethane.

...
16-5-2020 at 13:02
by: nimgoldman
Looking for Sudan III (Sudan Red) or substitutes...
Unfortunately, I am from EU and eBay does not show any results from nearbly - it's either from US, s ...
12-5-2020 at 07:29
by: nimgoldman
Looking for Sudan III (Sudan Red) or substitutes...
I am looking for Sudan III dye to use it as indicator in ozonolysis.

I could only find Sudan IV, ...
8-5-2020 at 07:02
by: nimgoldman
Maleic Acid by Dehydration of Malic Acid ?
You can definitely make fumaric acid from maleic (see [url=https://en.wikipedia.org/wiki/Maleic_acid ...
8-5-2020 at 06:54
by: nimgoldman
Maleic Acid by Dehydration of Malic Acid ?
Okay I've probably got it :)

Malic acid are two carbons connected by single bond, having three gr ...
5-5-2020 at 13:57
by: nimgoldman
Maleic Acid by Dehydration of Malic Acid ?
A quick look into the literature revealed a little bit. From Wygand/Hilgetag's "Preparative Organic ...
5-5-2020 at 13:09
by: nimgoldman
Maleic Acid by Dehydration of Malic Acid ?
I am interested in glyoxylic acid production by the ozonolysis of maleic acid.

Unfortunately, mal ...
5-5-2020 at 12:24
by: nimgoldman
Gallic Acid and Pyrogallol from EGCG/Tannin ?
Heliotropin (piperonyl aldehyde) is made industrially from catechol by methylenation and formylation ...
27-4-2020 at 03:55
by: nimgoldman
Gallic Acid and Pyrogallol from EGCG/Tannin ?
[rquote=634699&tid=155242&author=Boffis]Hi Nimgoldman, the example you give as a component o ...
25-4-2020 at 04:30
by: nimgoldman
Gallic Acid and Pyrogallol from EGCG/Tannin ?
I was looking into green and OTC sources of gallic acid (GA), pyrogallol and other simple phenolic c ...
24-4-2020 at 05:15
by: nimgoldman
Preparation of Nickel (ii) acetate
Here is my first attempt - still wet and really strong acetic acid smell:

[url=https://imgur.com/ ...
13-3-2020 at 02:37
by: nimgoldman
Dosposing Oil Containing Nitromethane
Yeah sure I will try soon.

I should have tried before posting, but I like to get a wider picture ...
12-3-2020 at 19:27
by: nimgoldman
Dosposing Oil Containing Nitromethane
I have a residue from fractional distillation of nitro RC fuel.

Nitro RC Fuel contains mostly met ...
12-3-2020 at 12:59
by: nimgoldman
Destroying N-methylpyridinium Chloride with Fenton's Reagent ?
My best guess so far was to neutralize the rxn. mixture with NaOH - turning the methylpyridinium hal ...
26-1-2020 at 08:25
by: nimgoldman
Destroying N-methylpyridinium Chloride with Fenton's Reagent ?
I plan to use pyridine and pyridine hydrochloride (Py.HCl) in O-demethylation, e.g.:

[b]R-O-CH3 + ...
25-1-2020 at 19:31
by: nimgoldman
Blanc Chloromethylation - Removing BCME from Product
There was probably some standard way how they dealt with BCME in the industry, when Blanc chlorometh ...
23-1-2020 at 15:35
by: nimgoldman
Blanc Chloromethylation - Removing BCME from Product
Didn't you mean *sensitive* ?

Of course I plan to fractionally distill the chloromethyl intermedi ...
23-1-2020 at 13:12
by: nimgoldman
Extraction of diethyl ether — impurities?
Wouldn't it be possible to remove acetaldehyde via its bisulfite adduct?

For better fractionation ...
22-1-2020 at 13:07
by: nimgoldman
Blanc Chloromethylation - Removing BCME from Product
[rquote=629813&tid=154755&author=Tsjerk]Is there really no alkaline step downstream of your ...
22-1-2020 at 11:44
by: nimgoldman
Blanc Chloromethylation - Removing BCME from Product
It is well known that Blanc chloromethylation produces a highly carcinogenic bis(chloromethyl) ether ...
22-1-2020 at 06:09
by: nimgoldman
Recovering Silver from Silver Bromide
[rquote=629790&tid=102555&author=clearly_not_atara]Dithionite huh? Nice that someone finally ...
21-1-2020 at 17:29
by: nimgoldman
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