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p-toluene sulphonic acid synthesis
If water is azeotropically removed during the sulphonation less than concentrated acid will work sa ... |
7-11-2005 at 01:49
by: bio2 |
toluene --> benzaldehyde
...Any idea on how one could prevent the runaway (mentioned on synthetikal) of this persulfate oxida ... |
26-10-2005 at 01:25
by: bio2 |
electron gun
.....You could cheat and use the gun from an old CRT monitor. Are you trying to get heating .......
... |
24-10-2005 at 00:19
by: bio2 |
Ammonium salts preparation....
...(NH4)H2PO4 ......
The mono H form of this orthophosphate is quite interesting..
(NH4)2HPO4 ... |
23-10-2005 at 03:09
by: bio2 |
methylene chloride alert!
.....I'm curious if HDPE containers would have the same problem?........
Yep, thick reagent ... |
17-10-2005 at 21:13
by: bio2 |
Etching PTFE for subsequent bonding
........In any case, I mixed ethanol that I had gotten by vigreux distillation from 151 proof rum wi ... |
8-10-2005 at 23:07
by: bio2 |
Etching PTFE for subsequent bonding
Maybe NaOEt from NaOH & EtOH. |
6-10-2005 at 21:39
by: bio2 |
Why DMF is controlled?
......Listed substances does not necessarily mean they are drug precursors. ..........
Thankyou f ... |
6-10-2005 at 15:56
by: bio2 |
Why DMF is controlled?
.........I know that DMF is in lists of controlled substances...............
Don't know your ... |
6-10-2005 at 13:24
by: bio2 |
Scrapheap Challenge (industrial scavenging)
.....s it absolutely necessary to use official vacuum pump oil in vacuum pumps?..........
No, lo ... |
4-10-2005 at 18:54
by: bio2 |
A little history
.........It would be a very interesting, non-conventional, oxidiser............
Actually quite co ... |
2-10-2005 at 22:36
by: bio2 |
maa question
.........didnt realize rectifiers 'blew' so fast, as I thought they were designed for thi ... |
26-9-2005 at 01:26
by: bio2 |
Scrapheap Challenge (industrial scavenging)
You're not likely to find much SS in the junk but a good source for used tubing is boat handrai ... |
23-9-2005 at 02:39
by: bio2 |
Collect solvent vapour
........... because i want to conserve the solvent and distillate..............
Raise the pressur ... |
22-9-2005 at 02:04
by: bio2 |
vacuum pump help
The mist eliminator/muffler is very similar to the ones used on air compressors (not the water separ ... |
19-9-2005 at 12:39
by: bio2 |
cleaning engine used oil..
This problem is normally solved by ash and effluent treatment.
Heavy metal recovery units are co ... |
12-9-2005 at 20:43
by: bio2 |
The best country to pursue amateur chemistry in.
.......I remember someone on this forum saying that possession of red P is actually a felony in the ... |
12-9-2005 at 19:51
by: bio2 |
vacuum pump help
The tip of the vane lobes has a spring loaded seal (carbon/polished steel) that moves along the face ... |
12-9-2005 at 02:32
by: bio2 |
The best country to pursue amateur chemistry in.
...........The thing that gets me about the USA is the actual banning of certain chems, red P comes ... |
11-9-2005 at 17:00
by: bio2 |
vacuum pump help
Sounds like it's time to buy a rebuild kit. The vane seals need replacing periodically dependin ... |
9-9-2005 at 02:13
by: bio2 |
How is amalgamated Al supposed to look like?
Silicon leaves a white residue when the Al is dissolved in NaOH solution. Fe leaves a black residue ... |
6-9-2005 at 02:10
by: bio2 |
Al/Hg workup: IPA/dilute HCl solubility?
............The procedure leaves two phases:
1) IPA with freebase amine.
2) Water with Al-slurry . ... |
29-8-2005 at 01:59
by: bio2 |
oil mist filter for vac pump
Sand huh? Good idea will have to try it.
A jar filled with loosely packed tissue paper with the e ... |
25-8-2005 at 21:41
by: bio2 |
NaOH as drying agent?
KOH & NaOH are the preferred drying agents for free amines. Dries much more complete than MgSO4. ... |
16-8-2005 at 23:05
by: bio2 |
Where did my freebase go?
Were the ketone and amine from the same batch? |
16-8-2005 at 22:58
by: bio2 |
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