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Improvised Hempel column packing
Stainless packing is rather limited. Where I work, we have some columns with coarse stainless wool p ... |
16-9-2016 at 06:18
by: Praxichys |
Improvised Hempel column packing
I use these in my column:
http://www.ebay.com/itm/Ceramic-Raschig-Rings-for-Moonshine-Reflux-Col ... |
15-9-2016 at 08:39
by: Praxichys |
Glycine diazotisation in HCl - blue nitroso product?
I bet the mysterious blue compound is the nitrous ester of glycolic acid.
[file]53069[/file]
... |
14-9-2016 at 10:55
by: Praxichys |
Collecting a volatile product
Your yield will be higher if you scale the process up. Bromine vapor at STP has a mass of 7.14g/L, a ... |
14-9-2016 at 05:18
by: Praxichys |
Making Nitrates
It sort of makes sense that "artificial" fermentation to produce nitrates was never industrially pop ... |
13-9-2016 at 11:57
by: Praxichys |
Nitrate by Fermentation
A neat idea I was toying with for Aga's last challenge is to [i]artificially[/i] mimic the dung and ... |
13-9-2016 at 07:23
by: Praxichys |
Molecular sieves - care and feeding
For the shorter alcohols, anything with more than 15% water should be distilled first.
K2CO3 work ... |
13-9-2016 at 06:18
by: Praxichys |
Acetic acid from acetone
It is next to impossible on the lab scale. Any method would certainly require high pressure and prec ... |
13-9-2016 at 05:01
by: Praxichys |
decomposing sugar
Acid hydrolysis, invertase maybe? It depends what you mean by decomposing. |
12-9-2016 at 05:45
by: Praxichys |
Why not EDDN?
https://www.atf.gov/explosives/docs/publication-federal-explosives-laws-and-regulations-atf-p-54007/ ... |
11-9-2016 at 08:04
by: Praxichys |
Why not EDDN?
Silver isn't that expensive to use as a primary. You can get bouillon on eBay, $9 for 5g, which is $ ... |
8-9-2016 at 10:43
by: Praxichys |
Why not EDDN?
Ethylenediamine is nasty stuff, and next to impossible to manufacture yourself. If you can find it, ... |
6-9-2016 at 05:47
by: Praxichys |
Why are there two ways to express Acetate?
There is actually a third way of expressing an acetyl group, as "Ac" (OAc or AcO when referring to a ... |
1-9-2016 at 10:31
by: Praxichys |
problem with thermocouple thermometer
In my experience, any type K rated much beyond 300°C has no plastic components at all. Typically th ... |
31-8-2016 at 07:40
by: Praxichys |
NEWS: Bomb scare after illegal chemicals found at home of 'pyro enthusiast'
http://www.mirror.co.uk/news/uk-news/bomb-scare-after-illegal-chemicals-8564001
It's from earlier ... |
30-8-2016 at 06:54
by: Praxichys |
A slight problem...
If you have survived this far, you're going to be just fine.
Hypochlorite instantly destroys cya ... |
30-8-2016 at 05:43
by: Praxichys |
Best way to reduce noise/silence a vacuum pump?
You could run the pump in a different room and just have a long vacuum line.
Rotary vane pumps ar ... |
29-8-2016 at 07:36
by: Praxichys |
Diluting oleum
If you want oleum of a lower concentration, dilute it with ice cold sulfuric acid with a lot of stir ... |
24-8-2016 at 06:27
by: Praxichys |
Cold Pack Ammonium Nitrate Comparison
When you heat it, waft a little to your nose. Urea decomposes to solid residues of biuret, cyanates, ... |
24-8-2016 at 05:27
by: Praxichys |
Mechanics brain teaser
The spring should be irrelevant. In the relaxed state, the spring will have elongated equivalent to ... |
23-8-2016 at 09:50
by: Praxichys |
Urushiol
I had a similar experience to Velzee. Here in Michigan it grows extensively, even in my backyard. I ... |
20-8-2016 at 16:34
by: Praxichys |
Can air be pumped/blown similarly like how venturi aspirators cause vacuum?
https://en.wikipedia.org/wiki/Trompe |
12-8-2016 at 15:59
by: Praxichys |
Difficult hydrolysis of an hindered ester
You might try an appropriate phase transfer catalyst. I can't imagine this substance having apprecia ... |
9-8-2016 at 05:22
by: Praxichys |
Red Oxygen
200 years from now, amateur experimenters will have long forgotten acetone peroxide and will instead ... |
8-8-2016 at 11:57
by: Praxichys |
100 % sulphuric acid
Oleum is pretty corrosive and probably expensive to ship. I have found P2O5 online though, and it wo ... |
8-8-2016 at 06:06
by: Praxichys |
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