Sciencemadness Discussion Board
Not logged in [Login ]
Go To Bottom

Search
[Next Page]
pharma / food grade ethanol - distillation using Hempel column
here how quick the T changed when the main fraction distilled, every picture name contains its exact ...
21-4-2021 at 11:27
by: Fery
pharma / food grade ethanol - distillation using Hempel column
In spring 2020 I collected 10 kg apples which fall to the ground in an abandoned apple orchard. I pr ...
21-4-2021 at 11:11
by: Fery
Preparation of Mononitrotoluenes (o-, p-)
S.C. Wack do you mean using 91% IPA for recrystallization of mixture of dinitrotoluene isomers, or r ...
17-4-2021 at 22:49
by: Fery
Preparation of Mononitrotoluenes (o-, p-)
Here they suggest HNO3+H2SO4 at very low temp, -10 to +5 C:
https://www.oc-praktikum.de/nop/en/inst ...
17-4-2021 at 07:42
by: Fery
Sodium borohydride and Sodium azide for sale
I'm also regular customer, I already ordered from chemcraft.su approximately 5 times and I must high ...
13-4-2021 at 03:27
by: Fery
mononitrophenols - nitration of phenol
0,5% Na bisulphite adjusted to pH 5,4-6,4 (I checked with digital pH meter) water purification metho ...
9-4-2021 at 10:28
by: Fery
hydrobenzamide from benzaldehyde and ammonia
I found a video, someone did further steps in synthesis hydrobenzamid->amarin->lophin
https:/ ...
9-4-2021 at 10:17
by: Fery
Phthalic acid synthesis
Our forum member Prepic asked me to post the preparation of phthalic acid from naphtalene + KMnO4.
...
9-4-2021 at 05:40
by: Fery
Alcohol 99,9%
[rquote=657748&tid=157276&author=Blunotte]Wow, half of it is pure poison! If someone acciden ...
8-4-2021 at 09:45
by: Fery
Rare and hard to obtain chemicals for sale
Another good trade with chemship1978. Whatever is your primary job, I wish you better life from this ...
8-4-2021 at 02:47
by: Fery
Drying Chems without desiccator
I have cca 10 kg of ammonium nitrate with dolomite fertilizer (75-80% AN + 20-25% dolomite).
I diss ...
7-4-2021 at 23:54
by: Fery
Some fun with a really obscure compound.
Hi Woelen, we are exposed to Hg without knowing. Replacing amalgam at stomatology, few mg released. ...
6-4-2021 at 23:26
by: Fery
Phthalic acid from ZnO + DMF + Napthalene
I produced phtalic acid from naphtalene by refluxing in aqueous KMnO4. Then filtered out MnO2 and ac ...
4-4-2021 at 10:21
by: Fery
Latest chemical order?
Vano I've bought 1 kg of Sm metal for 130 EUR to explore its usage in organic chemistry (SmI2)
http ...
1-4-2021 at 11:28
by: Fery
First o-toluidine synthesis - running into some issues with the reaction mixture
I found helpful video here:
https://www.youtube.com/watch?v=FIUgBfWkx7I
31-3-2021 at 21:17
by: Fery
Correct position of thermometer in Claisen adapter
I did some tests here:
https://www.sciencemadness.org/whisper/viewthread.php?tid=154944&goto=se ...
26-3-2021 at 11:20
by: Fery
Large scale anthranilic acid prep
Btw the methyl anthranilate is available at https://shop.es-drei.de/ester/11927/anthranilsaeuremethy ...
26-3-2021 at 10:50
by: Fery
Condenser overpowering and joint size?
https://sklep-chemland.pl/en/szklo-laboratoryjne/chlodnice/chlodnice-ze-szlifem/chlodnice-dimrotha/c ...
25-3-2021 at 22:46
by: Fery
Nitric oxide/antiviral nose spray for COVID-19
symboom - the nitric oxide is very interesting neurotransmitter and it also affects vessels in male ...
24-3-2021 at 07:15
by: Fery
How much vacuum can an aspirator pull?
So I checked the old water aspirator with a manometer and it is much more powerful than the evacuate ...
24-3-2021 at 06:31
by: Fery
Nicotinamide => Nikethamide & Nicorandil
Nikethamide & Nicorandil are very old pharma substances, seem not to be used anymore, do you wan ...
23-3-2021 at 00:38
by: Fery
Nitric oxide/antiviral nose spray for COVID-19
NO is also synthesized in human body from arginine, the enzyme involved is NOS (NO Synthase)
there ...
23-3-2021 at 00:30
by: Fery
Cold and Minty
zed you can oxidize menthol using aqueous environment with dichromate+H2SO4, or in acetone environme ...
22-3-2021 at 13:38
by: Fery
Latest chemical order?
in my country you can buy 25 kg KNO3 food grade for 71 EUR
https://fichema.cz/dusinan-draseln-kno3/ ...
20-3-2021 at 08:11
by: Fery
furfural
Hi Boffis, grated horseradish has quite unpleasant effect in copious secretion from nose and flood o ...
17-3-2021 at 07:05
by: Fery
[Next Page]

  Go To Top