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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 |
Recovering Silver from Silver Bromide
This thread popped up for me in Google search when I researched more about this, so I will just add ... |
21-1-2020 at 12:07
by: nimgoldman |
Refreshing old Sodium Dithionite
Alright, I will just repack it.
I found the 20% sodium dithionite soln. is only slightly acidic a ... |
21-1-2020 at 11:53
by: nimgoldman |
Refreshing old Sodium Dithionite
I have about 1.5 year old sample of commercial sodium dithionite powder.
I stored it in plastic b ... |
20-1-2020 at 18:14
by: nimgoldman |
Copper disposal issues
There is usually only minute amount of copper(II) to remove (I use it as a catalyst in gram amounts) ... |
9-12-2019 at 19:50
by: nimgoldman |
Copper disposal issues
Yes I can do that. I've used sodium sulfide with success for mercury waste cleanup.
I've read so ... |
9-12-2019 at 17:40
by: nimgoldman |
Copper disposal issues
Sorry i meant basic. The waste solution was about pH 10 and no precipition took place by adding Na2C ... |
9-12-2019 at 15:57
by: nimgoldman |
Copper disposal issues
I have a huge amounts of liquid copper waste but the disposal methods don't work for me.
Some of ... |
9-12-2019 at 15:37
by: nimgoldman |
Removal of aldehyde from alcohol
Yes - remove alcohol by distillation, mix with sat. aq. bisulfite soln. (adduct will form), filter, ... |
20-11-2019 at 09:40
by: nimgoldman |
Ammonium formate from Ammonium chloride
You can most likely get Baker's ammonia (ammonium bicarbonate), listed as E503 on foodstuffs. It's O ... |
20-11-2019 at 09:32
by: nimgoldman |
Blacklight as a light source for chlorination?
Thanks, I will probably first try the reaction at microscale with the cheap UV-C bulb and see.
Pr ... |
20-11-2019 at 09:11
by: nimgoldman |
Blacklight as a light source for chlorination?
I am looking for an UV light source for small scale chlorinations (making benzyl chloride from tolue ... |
20-11-2019 at 02:36
by: nimgoldman |
Preparing "Neutral" Copper(II) Nitrate Solution for Aldehyde Synthesis
[rquote=625573&tid=154275&author=Pumukli]Nimgoldman, do you have a published procedure with ... |
6-11-2019 at 11:54
by: nimgoldman |
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