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BUTYL RUBBER from CAULK
....IS there a source for polyisobutylene wherein the material is freely available without extractio ... |
17-1-2007 at 17:56
by: bio2 |
methylamine
Not the ones I use, Macherey-Nagel
They can be rinsed and stored in distilled
water and reused a ... |
17-1-2007 at 17:27
by: bio2 |
methylamine
......This gadget does however not work when leading the MeAm gas through concentrated hydrochloric ... |
17-1-2007 at 17:07
by: bio2 |
theoretical amphetamine variants
OK, sorry, as I thought this was the appropriate thread.
'
If the moderator would please move this ... |
7-1-2007 at 16:25
by: bio2 |
theoretical amphetamine variants
Joh posted this comment.
............us patent 5470997 has an example I can't find nicodem's rese ... |
6-1-2007 at 02:10
by: bio2 |
On HgCl2 toxicity
Slow death by kidney failure from HgCl2.
A single dose of 1g is survivable by some
I read in so ... |
22-12-2006 at 20:53
by: bio2 |
MEXICAN Chem Companies
Problem is look at is what is on List 2 pretty ridiculous.
The threshold quantities for most are ... |
13-12-2006 at 18:26
by: bio2 |
Nitroalkane syntheses ?
.........THERE IS NOT WORKABLE NITROETHANE SYNTH!.........
Huh? The 42.6% yield quoted above ain; ... |
4-12-2006 at 16:03
by: bio2 |
Syringe and needles
A 60 ml polypropylene syringe from the vet supply around here is about $2.50 and can be used many ti ... |
27-11-2006 at 19:47
by: bio2 |
Leybold Trivac D2A vacuum pump
An auto fuel filter , the clear plastic type, with a pleated cellulose element works well. A little ... |
10-11-2006 at 11:15
by: bio2 |
Teflon stir bar in large flask
A so called "pivot ring" used on the octagonal magnets
and others will center better on sufaces n ... |
6-11-2006 at 14:12
by: bio2 |
Reportable Quantity & The List
I quess my reference to SARA was incorrect but WTF it's called
(CERCLA?)certain substances do requi ... |
5-11-2006 at 20:52
by: bio2 |
Mechanical stirrer
...... if the hotplate is a couple inches away from the stirbar it still works? ........
Yep, exc ... |
5-11-2006 at 10:34
by: bio2 |
Reportable Quantity & The List
......Doesn't the term "reportable quantity" or "RQ" apply only to a spill? .........
Not as I un ... |
5-11-2006 at 10:28
by: bio2 |
Weird copper compound
Just curious; Is that a marbles "bath" between the metal pot and what looks like a crockpot? |
4-11-2006 at 11:05
by: bio2 |
Anyone ever built an overhead stirrer?
....They're ALL bipolar stepper motors......
Not in the ones I took apart. There are 3 motors two ... |
1-11-2006 at 10:45
by: bio2 |
Anyone ever built an overhead stirrer?
A motor from an old printer in a standard clamp on a ringstand
is more versatile and smooth runni ... |
30-10-2006 at 17:03
by: bio2 |
Mouse Insects glue!!
One I have says polyisobutylene and this stuff is the stickiest
shit I've ever seen.
A bird ste ... |
23-10-2006 at 09:32
by: bio2 |
Manganous-Ammonium alum and derivatives for use of toluene oxidation to benzaldehyde
...... I've never actually tried using a wire for a shunt, but I think I'll stick one in this circui ... |
19-10-2006 at 14:00
by: bio2 |
Manganous-Ammonium alum and derivatives for use of toluene oxidation to benzaldehyde
Nice little setup! Just a wire shunt will give an accurate current
as voltage reading on a cheapo d ... |
18-10-2006 at 11:34
by: bio2 |
Failed fractional vacuum distillation.
This will never work for this application which requires
steady rampable known heat. Not that it's ... |
16-10-2006 at 20:21
by: bio2 |
Drying wet acetic acid.
... I don't want to have to buy a 50lb bag to get some. ........
The agricultural grade might be ... |
16-10-2006 at 18:19
by: bio2 |
Failed fractional vacuum distillation.
If the column is long and the heat barely adequate then it helps to heat the column to 10-15 deg be ... |
16-10-2006 at 17:41
by: bio2 |
demineralizer resin
......it appears that the IRN-150 system was not designed to be regenerated...........
I did not ... |
16-10-2006 at 17:34
by: bio2 |
Drying wet acetic acid.
....method says -17 C and lower.....
It also says at 0 deg "nice crystals are obtained.. Based on ... |
16-10-2006 at 08:32
by: bio2 |
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