| Search |
| [Next Page] |
Essential Chemicals for the Organic Lab
Here's my present inventory:
Almost all this stuff is gotten OTC, or ordered from pottery supply, ... |
18-3-2018 at 09:52
by: PirateDocBrown |
Separating metals out of a coin
I posted, long ago, a method for separating Ni and Cu derived from cupronickel coins. If there is al ... |
14-3-2018 at 18:18
by: PirateDocBrown |
Separating metals out of a coin
If you want to get Ni out of coins that only have 5% of it, you are better off switching coins. Try ... |
14-3-2018 at 00:25
by: PirateDocBrown |
RotoVap
[rquote=509929&tid=81022&author=PrussianBlue].[/rquote]
I have one of these. I got it sur ... |
10-3-2018 at 10:08
by: PirateDocBrown |
Preparation of “Absolute” Ethanol (<100 ppm water)
Also, back in grad school, I used NaOH-saturated isopropanol (probably 99%, but I'm sure 91% would d ... |
25-2-2018 at 18:31
by: PirateDocBrown |
Preparation of “Absolute” Ethanol (<100 ppm water)
[rquote=508483&tid=80742&author=Magpie]
silicone oil for oil bath (DOT 5 brake fluid works ... |
25-2-2018 at 18:24
by: PirateDocBrown |
Idea for Breaksafe Reagent Bottles
Tool dipping can be done at room temperature. |
17-2-2018 at 01:10
by: PirateDocBrown |
1,4-Dioxane from Ethylene Glycol and H2SO4
After about 200 mL of crude product came over, I added another 200 mL of antifreeze to the cooled re ... |
13-2-2018 at 00:55
by: PirateDocBrown |
Inert atmosphere :Vacuum as good as Nitrogen ?
N2 is easy to generate. NaNO2 + NH4Cl. Pass the gas through a drying tube, and voila! nearly pure N2 ... |
12-2-2018 at 21:23
by: PirateDocBrown |
1,4-Dioxane from Ethylene Glycol and H2SO4
Not sure why it does that. It's right side up, when you click on it. |
10-2-2018 at 13:25
by: PirateDocBrown |
1,4-Dioxane from Ethylene Glycol and H2SO4
I just turned out a batch.
300 mLs of the cheapest antifreeze concentrate Wal-Mart had, with 30 m ... |
10-2-2018 at 05:43
by: PirateDocBrown |
Removing alcohols from nonpolar solvents
Concentrated H2SO4 solubility is a standard test, in qualitative organic analysis. It's used to disc ... |
8-2-2018 at 23:44
by: PirateDocBrown |
triphosgene
I've always thought phosgene smelled like rotten grass, not fresh grass.
But I only got small whi ... |
8-2-2018 at 14:28
by: PirateDocBrown |
How does activated charcoal selectively decolorize oils without just adsorbing the desired oils?
Activated carbon is often used in chromatography, to allow some products to elute, and others to be ... |
1-2-2018 at 16:06
by: PirateDocBrown |
1000ml Beakers that i touch explode
Stainless steel beakers are available. |
29-1-2018 at 11:39
by: PirateDocBrown |
Should Pharmacists know what Potassium Hydroxide is?
It wasn't always the case. In the 70s, as a kid with a chemistry set under the basement stairs, my l ... |
28-1-2018 at 21:48
by: PirateDocBrown |
potassium nitrate and copper sulphate
[rquote=260901&tid=21609&author=Vargouille] Barium has the least soluble sulfate of the thre ... |
26-1-2018 at 07:34
by: PirateDocBrown |
Heating Mantle Controllers
Just happens I found this bad boy at University surplus today, for $36. 1kW, tests OK, just needs so ... |
25-1-2018 at 16:28
by: PirateDocBrown |
Titanium Tetra-chloride Bottling
Stick in a small tube with an argon bleed to purge the air inside the ampoule. Heat the ampoule neck ... |
25-1-2018 at 16:24
by: PirateDocBrown |
Should I talk to the police before starting my lab?
Talking about law with cops is like talking about surgery with a butcher. |
24-1-2018 at 09:05
by: PirateDocBrown |
Nitrogen Generator
Distilling under N2 is very doable. I've never done it with generated gas, only from a tank, but it ... |
23-1-2018 at 12:43
by: PirateDocBrown |
Issues with Soxhlet set up
[rquote=503844&tid=79704&author=SWIM]The actual answer, guys.
EDIT: Somebody posted here ... |
15-1-2018 at 22:03
by: PirateDocBrown |
Preparation of Diethyl Sulfate
I'm thinking addition of a Dean-Stark type apparatus here could improve yield, by returning the unre ... |
13-1-2018 at 11:15
by: PirateDocBrown |
Separatory Funnel O-Rings
A while ago, California had a restriction on sale of MEK, I'm assuming for air quality reasons. So, ... |
13-1-2018 at 11:01
by: PirateDocBrown |
Recovery of Iodine from Iodine, Hydrogen Iodide and water mixture
Useful info, though! Beats throwing out iodine water! |
12-1-2018 at 14:36
by: PirateDocBrown |
| [Next Page] |
