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how would it change if world population went to 500m?
This is an interesting thought experiment. 500M out of 7B is 1/14, which would be disastrous. Imagin ...
17-5-2021 at 11:26
by: Praxichys
What makes liquor taste like rubbing alcohol?
"Fusel alcohols" are commonly formed as side products when fermenting anything other than clean suga ...
26-4-2021 at 07:31
by: Praxichys
distilling vinegar
The boiling down part is a pain. It is an all-day project; prepare for a steamy kitchen that reeks o ...
26-4-2021 at 05:36
by: Praxichys
Effecting a separation of two, nearly identical compounds
I was not able to find solubility data on urea oxalate but did find mentions that it was fairly inso ...
22-4-2021 at 10:28
by: Praxichys
Effecting a separation of two, nearly identical compounds
I do not think heating to decompose the urea will work. At best you will be left with a mess of cyan ...
20-4-2021 at 16:11
by: Praxichys
Demonstrations about the science of plastics
Here are a few ideas:

- Urethanes and their properties, urethane expanding foam
- Plastic foams ...
20-4-2021 at 06:42
by: Praxichys
why still lead in paints that are labeled "Lead Safe" ?
[rquote=657476&tid=157250&author=Sulaiman]lead occurs naturally in soil, 15 to 40 ppm,
http ...
20-4-2021 at 05:49
by: Praxichys
Most toxic compound OTC?
There are many varieties of common mushrooms rich in amatoxins, some as seemingly innocent as the li ...
20-4-2021 at 05:43
by: Praxichys
Erlenmeyer vacuum filtration?
A water aspirator at full bore can pull down to about 1.5 psia, which is ≈90% of a full vacuum and ...
16-4-2021 at 04:37
by: Praxichys
[rquote=658239&tid=157304&author=Cou]Not the illegal substances, but the technically-legal a ...
15-4-2021 at 10:07
by: Praxichys
Alcohol 99,9%
5 gallon bucket, 14 pounds of white sugar. Top off with hot water, stir to dissolve. Add $4 packet o ...
15-4-2021 at 06:55
by: Praxichys
Drying methanol
K2CO3 is your friend. It is [i]so[/i] soluble in water (1.1kg per kg of water!) that it can layer ou ...
15-4-2021 at 05:56
by: Praxichys
oh my god! 2900$ for a mortar???
As Fyndium mentioned: titanium is falsely portrayed as some kind of miracle material; the truth is t ...
15-4-2021 at 05:28
by: Praxichys
intent to possess 30 ml methylmercury = 12 yrs prison
It was a stupid attempt at a most basic level.

It's a very popular search result if you Google "m ...
9-4-2021 at 04:57
by: Praxichys
Anyone else in the US having issues finding OTC sodium bromide?
Not really OTC but it's reasonable on Amazon if you have Prime.

My local ACE carries the 2lb bott ...
12-3-2021 at 06:39
by: Praxichys
Future chemistry
I was recently reading about sea level rise and was intrigued to discover that from the 1950s-1970s ...
5-3-2021 at 08:54
by: Praxichys
How large amounts are separated?
Just water. The bottom layer is mostly aqueous sodium sulfate with some sulfuric acid; the top is pr ...
1-3-2021 at 11:33
by: Praxichys
How large amounts are separated?
Here is a 50L example. Coarse extraction is achieved using a bottom tap (in progress, see image). On ...
1-3-2021 at 08:14
by: Praxichys
I used SoloLearn to learn Python, in addition to Code Academy which was already mentioned. I think t ...
19-11-2019 at 07:03
by: Praxichys
Archive of permanently deleted nile red videos not even available on patreon
I can't wait until I'm under fire for that acetic anhydride apparatus...
14-11-2019 at 05:08
by: Praxichys
What’s your opinion?
What do you want to do with it?

Are you trying to homogenize and densify it? Do you need it molda ...
12-11-2019 at 08:16
by: Praxichys
H2SO4 on an extreme budget?
I haven't seen it mentioned here but sodium bisulfate in solution acts like 1:1 sodium sulfate and s ...
11-11-2019 at 12:26
by: Praxichys
Granulation of glass and fine abrasive powder
For more info, that process was known as corning.
11-11-2019 at 07:02
by: Praxichys
How to verify/identify sodium azide?
Yes, NaN3 is a pure white powder. I bought some from a member here about 4 years ago.
1-11-2019 at 10:29
by: Praxichys
best option for analysing chemicals in home lab
I kind of wonder if something like this is worth it to the amateur lab: ...
1-11-2019 at 04:28
by: Praxichys
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