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How to clean a separatory funnel?
Sulfamic acid can sometimes be found OTC, as grout cleaner in home improvement stores. Also, commerc ...
16-10-2019 at 17:45
by: PirateDocBrown
methylamine from formaldehyde and NH4Cl won't complete
[rquote=624522&tid=154142&author=S.C. Wack] formic acid is not converted to CO at 102C or ev ...
16-10-2019 at 17:37
by: PirateDocBrown
Storage containers
If it's non-corrosive, the easiest and cheapest is usually Mason jars.

I also often reuse old foo ...
13-10-2019 at 11:09
by: PirateDocBrown
Storage containers
The changes in packaging chems is sometimes a bit disconcerting for old hands.

I'm used to liquid ...
12-10-2019 at 13:08
by: PirateDocBrown
Ideas to run a chromathography column (menthol / camphor)
Did a bit of a look-up.

Menthol melts at the low 40s, but camphor at a much higher temp, 170 or s ...
12-10-2019 at 13:01
by: PirateDocBrown
Ideas to run a chromathography column (menthol / camphor)
[rquote=624254&tid=154158&author=DraconicAcid][rquote=624253&tid=154158&author=Pirat ...
12-10-2019 at 12:50
by: PirateDocBrown
Ideas to run a chromathography column (menthol / camphor)
Stain your TLC with iodine vapor.

But seriously, if you are doing quantitative analysis, why do c ...
11-10-2019 at 13:48
by: PirateDocBrown
methylamine from formaldehyde and NH4Cl won't complete
NH4Cl + 2 COH2 = CH3NH2.HCl + HCO2H

You get CO, not CO2, from the decomp of the formic acid.
7-10-2019 at 05:35
by: PirateDocBrown
Who else is a chemistry major with a perilous future
Switch to Chem Engineering. Better job prospects, with just a Bachelor's. If you stay in pure chem, ...
6-10-2019 at 14:07
by: PirateDocBrown
Chemist needed
More details, please, OP.
30-9-2019 at 10:42
by: PirateDocBrown
Making Pinchbeck Brass
I'd suggest another source for brass stock, spent cartridge cases from a firing range. Many times, t ...
27-9-2019 at 23:03
by: PirateDocBrown
Piecing Together the Ultimate Distillation Set
I got a distillation set from Deschem. 1000mL boiling flask, 500mL receiver. All arrived safely, qua ...
24-9-2019 at 14:17
by: PirateDocBrown
Chalk composition: CaCO3 vs CaSO4
Blackboard chalk is almost always gypsum, CaSO4.2H2O.
22-9-2019 at 15:32
by: PirateDocBrown
Help with scalating a synthesis please
OP, do report your results, I'd love to see what route you take!
21-9-2019 at 01:02
by: PirateDocBrown
Help with scalating a synthesis please
Doing oxidative alkene cleavage like this can be quite tricky.

If your reagent is too strong an o ...
21-9-2019 at 00:57
by: PirateDocBrown
Concentrating nitric acid and peforming nitration using succinic anhydride
I know you can go to succinic acid from 1,4 butanediol using nitric acid, and that reaction is fraug ...
20-9-2019 at 03:13
by: PirateDocBrown
Sulfuric acid from distillation issues
You can readily get 25% + H2O2 at many pool and spa stores. I used it for years to sanitize my hot t ...
19-9-2019 at 15:58
by: PirateDocBrown
Cheap OTC DCM in the USA?
That said, I'm surprised the possible terror applications of dimethyl carbonate have not been attend ...
18-9-2019 at 13:54
by: PirateDocBrown
Cheap OTC DCM in the USA?
https://www.carolina.com/catalog/detail.jsp?prodId=875970&s_cid=ppc_gl_products&utm_source=g ...
18-9-2019 at 13:48
by: PirateDocBrown
Help with scalating a synthesis please
Where are you getting large quantities of piperine?
16-9-2019 at 20:05
by: PirateDocBrown
Naptha everyone
Rather than gasoline, try distilling paint thinner. Far greater alkane content.

Pet ether is defi ...
16-9-2019 at 19:58
by: PirateDocBrown
Help with scalating a synthesis please
What's your source of piperinic acid?

It should scale up directly, if you have the starting reag ...
16-9-2019 at 00:26
by: PirateDocBrown
Malonic acid
Synthesis is simple, if you have chloroacetic acid and sodium cyanide. Nitrilation proceeds under mi ...
16-9-2019 at 00:18
by: PirateDocBrown
Steam distillation of mint - not working?
That may all well be, but it nevertheless remains that, commercially, mint is extracted overwhelming ...
2-9-2019 at 05:32
by: PirateDocBrown
Steam distillation of mint - not working?
The principal constituent of mint, menthol, has a boiling point far above that of water. (214C)

S ...
30-8-2019 at 18:29
by: PirateDocBrown
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