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Watched Chemicals south of the border
This so called "watched" chemicals list is rather vague and I wonder if it really exists
except in ... |
15-11-2007 at 15:53
by: bio2 |
Acetone from Nail Polish Remover
OK, my info was from CRC 74th.
The linked article is very good where it illustrates the complex b ... |
15-11-2007 at 10:09
by: bio2 |
Acetone from Nail Polish Remover
...."acetone and water are listed as having an azeotrope of 88.5% acetone boiling just below the BP ... |
14-11-2007 at 13:29
by: bio2 |
Acetylation of sulphate salts
lol, since when is aspirin a sulfate salt |
9-11-2007 at 17:45
by: bio2 |
Distilling HCl
.....Is PVC tubing and polypropylene resistant to HCl gas?....
PVC tubing will harden due to the ... |
6-11-2007 at 15:49
by: bio2 |
Distilling HCl
As the 28% acid is heated the low boiling HCl outgasses from the solution until the azeotropic conce ... |
31-10-2007 at 19:34
by: bio2 |
Beware "Deionised" water
I once tested some distilled water intended for batteries
and it was 80PPM TDS. Only one state in U ... |
25-10-2007 at 17:36
by: bio2 |
Reduction Al-Hg
....."He was reting to use Al amalgam when plain Al foil would have done fine".........
Are you t ... |
1-10-2007 at 14:09
by: bio2 |
Gas-phase apparatus construction
So, is there any way to stabilize the ketene in a solvent
for short term storage? |
13-8-2007 at 13:54
by: bio2 |
Caffeine Synthesis
......."1,2-dimethylurea + malonic acid (or ester) gives you domethylbarbituric acid. I bet dollars ... |
13-8-2007 at 12:32
by: bio2 |
replacement of diethyl ether
The standard industrial grade Hexanes are referred to as 3 deg because the boiling range is 68-71 de ... |
13-8-2007 at 11:52
by: bio2 |
dean stark trap advice
An Allihn or a Graham is no more difficult to purchase than
a Liebig. A Freidrichs is a good choice ... |
13-8-2007 at 11:41
by: bio2 |
Cyanide Insect Bait
The citric acid being unpalatable occurred to me however I diluted the solution by half and now the ... |
13-8-2007 at 10:07
by: bio2 |
replacement of diethyl ether
Hexanes or 30-60deg petroleum ether make a good low boiling substitutes for Et2O.
It takes a larg ... |
12-8-2007 at 20:27
by: bio2 |
Gas-phase apparatus construction
....."Acetone springs to mind, since ketene has a high solubility in it. "..........
Wouldn't thi ... |
12-8-2007 at 17:26
by: bio2 |
Cyanide Insect Bait
It's mainly roaches I'm after and I have already a boric acid bait that I made and experimented with ... |
12-8-2007 at 16:00
by: bio2 |
Cyanide Insect Bait
Sodium Cyanide 2.5g, Sugar (iced tea mix) 30g was mixed
with 100g water giving a thin syrup.
Thi ... |
12-8-2007 at 13:09
by: bio2 |
How to get 10% off @ RWV...
Hey evil lurker;
VWR will give you 20-30% off the catalog price after you open an account with t ... |
11-8-2007 at 14:38
by: bio2 |
ethanol purification by aluminum ?
..."Is Aluminiumethoxide soluble in ethanol anyway?"........
I don't know but I do know that the ... |
6-8-2007 at 20:19
by: bio2 |
ethanol purification by aluminum ?
I suppose one could form the ethoxide with amalgamated
Al then decompose that but there are other b ... |
6-8-2007 at 13:42
by: bio2 |
dean stark trap advice
Condensor length is determined by boiling point of the reflux
and temperature of the cooling water. ... |
6-8-2007 at 13:27
by: bio2 |
DIY fume hood air flow design optimization
Your drawing shows parallel fans not serial.
Equal fans in parallel produce multiples of flow at ... |
6-8-2007 at 12:41
by: bio2 |
hot champagne bottle + 26 psi
The tube should seal by compression alone although it wouldn't hurt to back it up with some RTV Sili ... |
6-8-2007 at 10:59
by: bio2 |
When is a flask too big?
Somewhere around 10-15% full you will end up with as much substance clinging to the apparatus as you ... |
5-8-2007 at 19:38
by: bio2 |
The Bogus Science (BS)Of 'Explosive SuperThermite'
......"What's it about, exactly?"......
Good question!
Did Prof. Jones say that "super thermit ... |
5-8-2007 at 11:53
by: bio2 |
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