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Best and worst smelling chemicals?
Thioethanol, aka ethanethiol, is used as the stenching agent for gas supplies. It ranks as pretty ra ... |
22-3-2004 at 15:05
by: unionised |
Connecting a plug to some wires
It's a vacuum pump so it is designed to work perfectly well with the inlet blocked (in fact, th ... |
22-3-2004 at 15:01
by: unionised |
Separation of two soluble salts
This is probably cheating but..
Add excess dilute sulphuric and distill off the ethanoic acid.
Add ... |
22-3-2004 at 14:51
by: unionised |
phthalic anhydride
IIRC isophthalic and terphthalic acids won't dehydrate to the anhydride that easily. That might ... |
22-3-2004 at 14:37
by: unionised |
BIODIESEL - cheapen your gasoline
At the moment, here in the UK it is only cheaper to use cooking oil than diesel because you don' ... |
20-3-2004 at 15:34
by: unionised |
MnO2 and Batteries
The last couple of zinc/carbon batteries I pulled apart contained MnO2 (at least, they contained som ... |
20-3-2004 at 15:17
by: unionised |
Inorganic qualitative analysis
Just to muddy the waters.
Nesslers reagent contains an excess of iodide. If there were copper pres ... |
20-3-2004 at 14:59
by: unionised |
Long chain ether syntheses
If your acid, methanol and isobutylene are dry then there isn't any water to spoil things.
MTB ... |
20-3-2004 at 14:48
by: unionised |
Radical solution to cosmetical problem
You can get food-grade bentonite clay for fining home made wine.
I'm not saying it will help y ... |
20-3-2004 at 14:38
by: unionised |
Long chain ether syntheses
Ethylene oxide polymers (also known as polytethylene glycols) are generally solids and disolve in wa ... |
19-3-2004 at 12:27
by: unionised |
Rubbing witches' broomsticks with alkaloids to produce a 'flying' effect
This is just about on topic if you accept that the first post was about the effect of (natural produ ... |
15-3-2004 at 16:17
by: unionised |
Thy famous tubes - a scrapyard approach
I didn't want NOx; I still got it and I didn't have the thing red hot. I wanted nitrogen f ... |
15-3-2004 at 15:59
by: unionised |
Inorganic qualitative analysis
If X is a carbonate then where does the water come from?
(A hydrated salt is not, strictly speaking ... |
15-3-2004 at 15:40
by: unionised |
Allotropes of carbon dioxide
I have found a few references to tetramethoxy methane (Bpt 113 c)
If that exists, then extrapolatin ... |
15-3-2004 at 15:30
by: unionised |
Thy famous tubes - a scrapyard approach
Just on the off chance that someone is interested I made a tube furnace too.
I got a foot of half i ... |
14-3-2004 at 16:41
by: unionised |
Inorganic qualitative analysis
Not sure how you ae meant to tell if X is a bicarbonate or a hydrated carbonate.
(and, for what it& ... |
14-3-2004 at 16:14
by: unionised |
Allotropes of carbon dioxide
I do't know the value of the entropy change but I know that sticking lots of CO2 molecules toge ... |
14-3-2004 at 16:03
by: unionised |
How many carbon nitrides?
Oops! not exactly a typo, I wasn't reading the book carefully. The "space molecule" i ... |
14-3-2004 at 15:52
by: unionised |
Allotropes of carbon dioxide
The last time I looked the various forms of SiO2 were refered to as "crystal modifications" ... |
14-3-2004 at 15:28
by: unionised |
I filled my garage with SO2!(Now I am sick)
Irritant in the sense that 1000 ppm will kill people in 10 min and 3000 ppm will do the same but onl ... |
14-3-2004 at 15:22
by: unionised |
Thy famous tubes - a scrapyard approach
Organikum,
So far as I can tell from this thread (and you don't seem to have included a refere ... |
13-3-2004 at 07:58
by: unionised |
Validity of this forumla ?
What was posted where Tuesday 24th?
Search didn't find it , nor did Google. |
13-3-2004 at 07:30
by: unionised |
I filled my garage with SO2!(Now I am sick)
If you got exposed to the gas on Sunday and didn't feel bad on Mon or Tue then any cough on Wed ... |
13-3-2004 at 07:25
by: unionised |
Thy famous tubes - a scrapyard approach
Hot steel wool is not known for it's inert nature. |
12-3-2004 at 16:38
by: unionised |
Ventilation
A lot of vapours that are toxic by inhalation are also toxic by skin absorbtion.
You really need ve ... |
12-3-2004 at 16:34
by: unionised |
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