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Best thing/way to clean hotplate?
I use acetone and ethanol (while cold) to clean the top and side of the organics. Then I try a few ... |
26-3-2025 at 16:30
by: Dr.Bob |
Problems with magnesium nitrate hexahydrate dehydratation
I think some fertilizers may be coated with something to prevent them from absorbing water easily. ... |
26-3-2025 at 16:22
by: Dr.Bob |
Birthday party for 10 year old
I like a little glycerin in potassium permanganate. Use a few tablespoons of KMnO4, add a teaspoo ... |
26-3-2025 at 12:57
by: Dr.Bob |
My Phenylethylhydrazine Extraction Mystery..
The desired product should be soluble in ethyl acetate, but you might TLC the extracts to check. I ... |
24-3-2025 at 11:01
by: Dr.Bob |
Chemistry apparatus made out of pure alumina or pure zirconia ceramic material ?
Sounds like me when I wanted a pair of glasses made of Cree's SiC, like Moisonitte, which would not ... |
20-3-2025 at 18:12
by: Dr.Bob |
Elemental sulfur from CS2
If you react the CS2 with F2, you can make trifluoromethyl-sulfurpentafluoride, althought it may be ... |
19-3-2025 at 15:49
by: Dr.Bob |
Energetics training classes in PA in June
There used to be a few courses like that, but they have been slowly disappearing. I think the Scho ... |
17-3-2025 at 11:38
by: Dr.Bob |
Synthesis of Modafinil
You could take all of the mixed and impure material and run a quick column on it to get the bulk of ... |
17-3-2025 at 11:34
by: Dr.Bob |
Furfurylidene acetone
Try adding the furfural slower or dropwise. As well as cooling the reaction. |
16-3-2025 at 18:33
by: Dr.Bob |
Synthesis of Modafinil
Nice job, that is a pretty nice synthesis. An extra purification would be a good idea just in case ... |
16-3-2025 at 18:32
by: Dr.Bob |
AUCTION 25g Ruthenium(III) Chloride starting at 1€
If anybody in the US wants a small amount of RuCl2 hydrate, I have about a gram in an open bottle fr ... |
13-3-2025 at 16:42
by: Dr.Bob |
Spectracide Stump Remover Discontinued
I have some smaller amounts of several nitrates if people are looking for them. |
13-3-2025 at 16:38
by: Dr.Bob |
Energetics training classes in PA in June
For those who like energetics, there are some training classes in June in Washington County, PA. S ... |
13-3-2025 at 10:33
by: Dr.Bob |
FIRST POST! Stocking my first lab - What else do I need, and at what cost?
In the US, it is most likely best to stay quiet, as many places will invent rules if asked for them. ... |
11-3-2025 at 06:00
by: Dr.Bob |
fake activated carbon??
I'm not real familiar with trying to recover materials from light sticks, but "activated" carbon or ... |
9-3-2025 at 14:50
by: Dr.Bob |
One pot reduction of dinitro compounds to diamines
I have made diaminobenzenes before. The best route is H2, Pd/C, ethanol, but I have also used Raney ... |
9-3-2025 at 14:38
by: Dr.Bob |
Inflated prices
[rquote=699465&tid=160830&author=Dr.Bob]Dynamite is not very expensive, but costs a lot to b ... |
5-3-2025 at 10:11
by: Dr.Bob |
Science equipment looking for a home
Here are a few more flasks I just unpacked. These are mostly 24/40 joints.
A - 24/40 2L evaporat ... |
1-3-2025 at 18:08
by: Dr.Bob |
Inflated prices
I do understand the cost as shipping these is a nightmare. And any accident will be a major issue ... |
1-3-2025 at 17:39
by: Dr.Bob |
Synthesis of Davis Reagent - Questions
You may find p-TsNH2 easier to find than the chloride as well, skipping a step. The tosyl sulfonami ... |
1-3-2025 at 17:34
by: Dr.Bob |
freebasing hydroxylamine
Pure hydroxylamine is not stable, as I recollect. In 30 years of chemistry I have never isolated i ... |
1-3-2025 at 17:27
by: Dr.Bob |
Science equipment looking for a home
Superoxide,
I don't have any water condenders like shown above, but I do have several of the sim ... |
25-2-2025 at 20:12
by: Dr.Bob |
Science equipment looking for a home
Here is another list of books to give away, I have a few people that asked before but were too late, ... |
25-2-2025 at 06:02
by: Dr.Bob |
Science equipment looking for a home
I think I have sold those, but might have a similar one left, I will check now that I am back. I d ... |
22-2-2025 at 22:00
by: Dr.Bob |
Trying to Acquire HF
There's no irony in the post, that is a good way to protect against HF leaks.
I worked with HF ... |
4-2-2025 at 17:40
by: Dr.Bob |
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