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Black humour (?) of Victorian chemists
I love reading the work of chemists of the 1800-ies. I found e.g. "porous plate" a few days ago.
... |
26-12-2018 at 11:08
by: Pumukli |
Porous plate
After two more old articles where W.H. Perkin used these plates it seems that these were used instea ... |
23-12-2018 at 17:09
by: Pumukli |
Porous plate
Yes, frit comes to mind, but they never mention"vacuum" or "suction" or "filtration" in connection w ... |
23-12-2018 at 11:49
by: Pumukli |
Porous plate
What is the so called "porous plate"?
I've been reading old (circa 1900) chemistry papers recentl ... |
23-12-2018 at 10:35
by: Pumukli |
Best method for absorption or scrubbing of gases from air
You should take into consideration how much pressure drop would be acceptable in your system. The "c ... |
18-12-2018 at 10:13
by: Pumukli |
Proline decarboxylations
[size=1][b][size=1]Foreword[/size][/b]
As I promised in one thread I came back to report on my ac ... |
16-12-2018 at 08:24
by: Pumukli |
L-Proline decarboxylation trials
Started to translate/compile the results of my work with the decarboxylation of proline. It will be ... |
24-11-2018 at 00:30
by: Pumukli |
Why did you delete my latest post?
Thanks j_sum1 and fusso.
At first I checked "Detritus" (I'm not a born optimist am I?) but there ... |
11-11-2018 at 04:57
by: Pumukli |
Why did you delete my latest post?
Why did you delete my this morning post regarding SM board and spam?
It did show up in the thread ... |
10-11-2018 at 05:35
by: Pumukli |
Spam on the rise
Dear Moderators,
Unfortunately it seems that the noise level on SM board is still rising. Be it t ... |
9-11-2018 at 22:03
by: Pumukli |
Phosphorus Pentachloride from Red Phosphorus
I would not do that.
My understanding is the chlorine would ignite the phosphorus then the local ho ... |
7-10-2018 at 02:06
by: Pumukli |
Preserving PP bag in a museum
Dear All,
A few days ago I was asked a strange question:
There is a museum of "modern arts" wh ... |
2-10-2018 at 09:30
by: Pumukli |
Preparation of Dimethyl Sulfate Discussion
Tosylates are good methylating agents IF you can make/buy the chlorides. Unfortunately there is no s ... |
13-9-2018 at 11:03
by: Pumukli |
Preparation of Dimethyl Sulfate Discussion
These tetraalkyl-ammoniums seems interesting, but how could you reach tetramethylammonium from trime ... |
12-9-2018 at 11:11
by: Pumukli |
Turning Black garlic into powder
Freeze drying perhaps?
Actually black garlick is not only oil or other liquid(s) but contain fibe ... |
12-9-2018 at 11:02
by: Pumukli |
Preparation of Dimethyl Sulfate Discussion
Would methyl bisulfate work for e.g. methylating phenols? I read that methylations with DMS can be t ... |
12-9-2018 at 00:08
by: Pumukli |
Preparation of Diethyl Sulfate
Hello Magpie,
Congrats for your synth and setup!
The low yield bothers me a lot though. You us ... |
7-9-2018 at 21:35
by: Pumukli |
Amino acid decarboxylation
It is just another update on my decarboxylation trials - which is still an ongoing project :-)
On ... |
25-8-2018 at 10:17
by: Pumukli |
Unusual request
Dear SM Members,
If you followed my latest posts in the Beginner section then you know what I'm d ... |
24-7-2018 at 12:16
by: Pumukli |
Amino acid decarboxylation
I reply a follow-up to my previous post.
That silicon oil medium turned out to be far from ideal. ... |
15-7-2018 at 06:45
by: Pumukli |
Amino acid decarboxylation
It seems I choose a bad subject for my experiments. Lysine seemed soo nice and cheap! :-) Cadaverine ... |
24-6-2018 at 09:59
by: Pumukli |
Amino acid decarboxylation
I'm struggling with this reaction.
Measured 9.8 g lysine into a 250ml flask, added 120 ml silicon ... |
23-6-2018 at 02:56
by: Pumukli |
Amino acid decarboxylation
I would like to do an amino acid decarboxylation but not sure what to expect. I mean I plan to use h ... |
21-6-2018 at 12:17
by: Pumukli |
Alkaline hydrolysis of dinitrochlorobenzene. Autoclaves and diphenyl ethers.
Boffis:
I think you'd encounter problems on the direct nitration route: the ortho positions in flu ... |
21-6-2018 at 11:48
by: Pumukli |
Another potential phthalate source?
Nothing illicit, o-phthalates are oestrogen-mimetic (or simply "just" endocrine disruptors) and are ... |
2-6-2018 at 14:28
by: Pumukli |
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