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Freeze concentrating acids
From my lab notebook:
[quote]1 gal. of 5% w/v distilled white vinegar was placed in a freezer at ... |
23-4-2018 at 19:42
by: weilawei |
Interesting experiments with light?
Several years back, I spent a good amount of time on photolithography. You can make a cheap (somehwa ... |
20-4-2018 at 05:11
by: weilawei |
US Group Buy: Sodium bromide and phthalic anhydride
I have no need for any, but I couldn't resist. Excuse me sir, would you like to buy a kilo of isopro ... |
18-4-2018 at 12:34
by: weilawei |
obtaining isopropenyl acetate?
Xeon, I couldn't hear you. Could you say that a little louder, please?  |
13-4-2018 at 12:11
by: weilawei |
separating Erythritol from a mixture of sodium saccharin and Erythritol
That's how I understood it from a quick skim. Water was his choice of a non-solvent because he wante ... |
13-4-2018 at 12:05
by: weilawei |
separating Erythritol from a mixture of sodium saccharin and Erythritol
How about heating to the melting point of erythritol and filtering off the solid sodium saccharin? 1 ... |
13-4-2018 at 10:16
by: weilawei |
screw caps for storage bottles
Qorpak makes excellent bottles, and you can buy them quite cheaply by the case of 12 if you order fr ... |
13-4-2018 at 09:01
by: weilawei |
new toys
Scored a Mel-Temp II for $39 plus $17 shipping. I don't often bid on eBay auctions, but I threw in a ... |
13-4-2018 at 03:45
by: weilawei |
Latest chemical order?
From the Dept. of Boring But Necessary Chemicals, a couple pounds of calcium chloride. |
10-4-2018 at 13:04
by: weilawei |
Nitration of Vanillin with KNO3/H2SO4 in Acetic Acid
Which position(s) do you think was nitrated? Very nice start all around! |
6-4-2018 at 08:22
by: weilawei |
Chlorine exposure limit for work
This sort of decorative alarm philosophy seems present in many jobs. In my job, I'm exposed to tolue ... |
30-3-2018 at 06:05
by: weilawei |
TEMPO 2,2,6,6-Tetramethylpiperidine 1-oxyl
Well, bad news is that fell through. I got a notice that it was no longer available, and my order wa ... |
22-3-2018 at 05:08
by: weilawei |
LD5050 potentially scamming
Aga, as far as I know, it's taken from the movie of the same name. That's where I learned it, at lea ... |
20-3-2018 at 12:37
by: weilawei |
TEMPO 2,2,6,6-Tetramethylpiperidine 1-oxyl
From "Trichloroisocyanuric/TEMPO Oxidation of Alcohols under Mild Conditions: A Close Investigation" ... |
19-3-2018 at 17:03
by: weilawei |
TEMPO 2,2,6,6-Tetramethylpiperidine 1-oxyl
I'm getting it from a US supplier. I have no experience with negotiating custom orders from China. M ... |
19-3-2018 at 14:27
by: weilawei |
TEMPO 2,2,6,6-Tetramethylpiperidine 1-oxyl
I ordered some TEMPO to experiment with oxidation of primary alcohols to aldehydes and carboxylic ac ... |
19-3-2018 at 12:46
by: weilawei |
Nitrogen Generator
I've been trying to rig up a nitrogen generator, with no obvious success yet. In my first attempt, I ... |
13-3-2018 at 15:21
by: weilawei |
RotoVap
Use it to evaporate solvents! Boy did you ever strike it lucky! Rotavaps are priceeeey. |
7-3-2018 at 14:54
by: weilawei |
Is sodium acetate hygroscopic?
XeonTheMGPony, I'll have to try recrystallizing from methanol. I just finished a small run making so ... |
6-3-2018 at 06:06
by: weilawei |
Would you invest in a stirrer hot plate as a noob, or just start with a regular hot plate?
I have a cheapo hotplate, but as soon as I found a good deal on a clean Corning PC-101 stirrer hotpl ... |
27-2-2018 at 12:10
by: weilawei |
Cobbled Together Chiller
Yeah, my original plan was to mount a pump directly inside where the filters used to be, but this re ... |
4-2-2018 at 09:14
by: weilawei |
Cobbled Together Chiller
I repurposed an old water cooler from work as a chiller for condensers. I've been using a bucket and ... |
3-2-2018 at 22:49
by: weilawei |
Ammonium Tetrachroloroaurate (Water Soluble Noble Metals)
There's a fascinating (and seemingly easy to reproduce) post at [url=http://blogs.sciencemag.org/pip ... |
29-1-2018 at 09:05
by: weilawei |
Silver from silver plate
Also, direct heating of AgNO3 will reduce it to elemental Ag. This can be much faster and easier. |
16-1-2018 at 09:31
by: weilawei |
Glassware in the Mail
USPS is typically accurate. |
16-1-2018 at 09:25
by: weilawei |
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