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Freezing ethanol with liquid carbon dioxide?
[rquote=479960&tid=73304&author=j_sum1]
Dry ice and acetone will get you down to -78°C.
T ... |
5-4-2017 at 08:21
by: Praxichys |
Goverment possibly tainting Hydrogen Perxoide to stop TATP, HMTD, DADP, MEKP.
We need to attack the mentality, not the means. It's impossible to prevent the manufacture and use o ... |
5-4-2017 at 06:27
by: Praxichys |
Aluminum can composition - plastic layer on inside & outside
The aluminum is reacting with the NaOH to form sodium aluminate. |
4-4-2017 at 12:29
by: Praxichys |
Chemistry April Fools
KI is still widely available on eBay if you can't get it from where you work. You can get 100g for l ... |
4-4-2017 at 04:59
by: Praxichys |
Chemistry April Fools
A little denatonium benzoate in the coffee gets immediate and hilarious results. It can also be mixe ... |
3-4-2017 at 10:46
by: Praxichys |
Distilling water
Why not use tap water? Is it not pure enough for your application? Generally all potable water is pr ... |
31-3-2017 at 10:36
by: Praxichys |
Electrical ignition system
I like to use old Christmas lights. If you're careful, you can clip off the top with a pair of wire ... |
29-3-2017 at 07:08
by: Praxichys |
Doug's Lab
[rquote=477844&tid=72953&author=Magpie]Maybe Doug has a demanding job and a wife/girlfriend. ... |
25-3-2017 at 16:23
by: Praxichys |
How to make/obtain a pressure release valve
A pressure cooker is typically limited to 15 or 20 psi.
https://www.grainger.com/product/CONTROL ... |
24-3-2017 at 11:42
by: Praxichys |
concentrating under vacuum
Easy. Just add a bunch of table salt and the isopropanol will layer out and take the oil with it. De ... |
23-3-2017 at 12:08
by: Praxichys |
shaped charges safety and effective range of jet formed!!
Fragments have poor aerodynamics and lose velocity very quickly.
A spin-stabilized, high density ... |
23-3-2017 at 09:53
by: Praxichys |
My HHO generator
Here are my experiences with it:
http://www.alloyavenue.com/vb/showthread.php?4303-Oxyhydrogen-Bu ... |
21-3-2017 at 11:23
by: Praxichys |
Vacuum pressure question
Yes, the reason most vacuum gauges measure "negative pressure" is that you are measuring "gauge pres ... |
1-3-2017 at 07:12
by: Praxichys |
Extraction of ethanol from gasoline
Yes, but denatured alcohol is not ethanol. It is a mixture, and as you mention, it is perfectly lega ... |
28-2-2017 at 10:50
by: Praxichys |
Extraction of ethanol from gasoline
Yes, unfortunately distilling ethanol [i]at all[/i] in the USA is illegal.
https://www.ttb.gov/sp ... |
28-2-2017 at 08:05
by: Praxichys |
Alternatives to Nitrogen.
CO2 is a bad idea for cell cultures. It will rapidly make everything acidic and probably wipe it out ... |
14-2-2017 at 07:46
by: Praxichys |
Heating mantle conversion
I can think of two options that might work.
Typical 110v houses are wired with a 220v split-phase ... |
14-2-2017 at 07:25
by: Praxichys |
Benzyl Alcohol from Green Stripper
The Klean-Strip brand "green floor adhesive remover" at Home Depot has 30-40% benzyl alcohol. Not su ... |
13-2-2017 at 11:16
by: Praxichys |
Heating mantle conversion
Just use a multimeter and check the resistance of the element. That will tell you exactly what it wi ... |
13-2-2017 at 07:47
by: Praxichys |
dioxane gunk removal
Anything strongly oxidizing in combination with sulfuric acid and strong heating should work. You ca ... |
13-2-2017 at 06:29
by: Praxichys |
o-toulidine synthesis-black gunk
First off, I wouldn't rely on an online recipe to cook drugs as a valid synthesis plan.
Which st ... |
13-2-2017 at 05:52
by: Praxichys |
Trying to clean up denatured alcohol.
Yep, distill that off and test it. If you have a column, you should try to fractionally distill what ... |
10-2-2017 at 10:05
by: Praxichys |
Citric acid to Isopropanol. Possible method?
So as a pedagogical exercise, in theory one could probably produce ethanol from malic acid as well, ... |
9-2-2017 at 12:04
by: Praxichys |
Benzaldehyde synthesis using aqueous nitric acid
Yes, the paper I posted a few days ago gives the mechanism and the rate constants for each step at v ... |
9-2-2017 at 07:02
by: Praxichys |
Hydroxylamine or Methylamine?
With the nitroalkane + HCl method you will always get hydroxylamine and the corresponding carboxylic ... |
8-2-2017 at 06:28
by: Praxichys |
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