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Any way to prepare anhydrous ZnCl2 without using gaseous Cl2 or HCl?
OK, I'm stand corrected!

I asked around and someone told me that those guys I mentioned in my pre ...
12-6-2019 at 12:21
by: Pumukli
making intresting substances from already available compounds
Pesticides can be useful precursors in org. chem. if you know what to look for.

Modern ones are s ...
11-6-2019 at 20:04
by: Pumukli
Any way to prepare anhydrous ZnCl2 without using gaseous Cl2 or HCl?
I've seen people who made relatively big ammounts (circa 200g) ZnCl[sub]2[/sub] melt on a strong gas ...
11-6-2019 at 02:48
by: Pumukli
Capsaicin extraction and isolation
Maybe it would be worth trying extraction first with something apolar, say heptane, petrol ether, so ...
10-6-2019 at 12:22
by: Pumukli
Any way to prepare anhydrous ZnCl2 without using gaseous Cl2 or HCl?
Drying hydrated ZnCl[sub]2[/sub] is possible by melting. (Strong heating required, in a stainless st ...
10-6-2019 at 12:13
by: Pumukli
Alkynyl Magnesium Halide:Grignard's reagent
Yes, it is a Grignard.
We can prepare an alkyne from it, yes.

"rather than using Alkyl Halides"
...
9-6-2019 at 09:50
by: Pumukli
Diethanolamine from 2-Chloroethanol
"and figure out what the chemical equation is for this reaction?"

Isn't this reaction a bit too a ...
9-6-2019 at 09:37
by: Pumukli
Chloroform Synthesis: Why does the common procedure uses Acetone instead of Ethanol?
Are you sure that HCOONa would survive being in the same mixture with NaOCl?
Formiates are fair red ...
2-6-2019 at 03:29
by: Pumukli
Just a little confusion on the god-like complexes of our mods
Interesting thread.

I don't think any of the mods have problems with god-like complexes, they mod ...
1-6-2019 at 12:32
by: Pumukli
Pathways to phenethyl alcohol
That D-glucose, oxygen in aq. phosphate buffer, Time=8h, T=30[sup]o[/sup]C, Green chemistry, regiose ...
1-6-2019 at 10:25
by: Pumukli
Diethyl ether from chloroethane and sodium ethoxide
"Has anyone ever attempted this?"

A man called Mr. Williamson probably did. :)

https://en.wik ...
30-5-2019 at 11:24
by: Pumukli
Gas pressure/flow regulator
Actually lots of CO[sub]2[/sub] regulators are sold/advertised as CO2/Argon regulator! These tanks ( ...
30-5-2019 at 11:13
by: Pumukli
The moment (or moments) that made you realize you had a passion for chemistry
Very well written story, Woelen!

My earliest chemistry related memory goes back when I was around ...
30-5-2019 at 10:24
by: Pumukli
Hydrolysis of l-Theanine and the synthesis of Ethylurea
Nicely written report!
Very interesting that the synthesys sequence gave such a high yield, includi ...
30-5-2019 at 09:18
by: Pumukli
Gas pressure/flow regulator
Yes, thread adapters can be made or bought from e.g. Ebay.
30-5-2019 at 08:15
by: Pumukli
Acetonedicarboxylic acid from ferric ammonium citrate
I heard that P[sub]2[/sub]O[sub]5[/sub] can dehydrate even H[sub]2[/sub]SO[sub]4[/sub]... Maybe it w ...
29-5-2019 at 03:58
by: Pumukli
Pathways to phenethyl alcohol
Whoa, SWIM, you weren't lazy! Came up with so many suggestions. I'd join the train of thoughts and s ...
29-5-2019 at 03:51
by: Pumukli
Separation of paraffin wax
Beeswax is not paraffin, it's a different animal chemically. But I don't see why would it be easier ...
28-5-2019 at 11:21
by: Pumukli
Pathways to phenethyl alcohol
It may solve the problem. I suggest though to look up some real preparation with ethyleneoxide befor ...
28-5-2019 at 06:04
by: Pumukli
Pathways to phenethyl alcohol
(OH) was a hint.
The OH group is not tolerated in a Grignard reaction. That H is too acidic and dec ...
28-5-2019 at 04:57
by: Pumukli
Pathways to phenethyl alcohol
2-chloro-ethanol in a Grignard reaction? Think it over. :) (OH)

Grignard reaction with formaldehy ...
28-5-2019 at 04:34
by: Pumukli
Purifying calcium/ammonium nitrate fertilizer, how to determine product?
Ammonium nitrat thermal decomposition gives N[sub]2[/sub]O.
Not NO[sub]2[/sub].

As I said, NO[su ...
26-5-2019 at 08:11
by: Pumukli
Purifying calcium/ammonium nitrate fertilizer, how to determine product?
Rest assured: heating ammonium nitrate to the 700-1000 C range in a closed container WILL LEAD to dr ...
26-5-2019 at 04:36
by: Pumukli
Sulphonation of chlorophenol
If sulfuric acid is not concentrated enough then it won't oxidize it.
I don't know, maybe 75-85% ac ...
25-5-2019 at 23:30
by: Pumukli
Manganese redox chemistry in strongly alkaline media (hypomanganates, manganates)
In my country mangane(II)-sulphate can be freely bought in farmer supply stores! It is used as micro ...
23-5-2019 at 22:05
by: Pumukli
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