| Search |
| [Next Page] |
Vacuum grease substitute?
What about getting some silica fume, cleaning it up and adding that to the grease? I believe I can g ... |
4-6-2008 at 20:25
by: angelhair |
rejuvinating old rubber?
I have one of those rubber sleaves that sit's under a buchner filter funnel that has gone a bit hard ... |
1-6-2008 at 22:17
by: angelhair |
H2O2. 2.5 years and still 35%
0.2% orthophosphoric acid. Got it from a friend who added it himself. Don't know if it was V/V or wh ... |
1-6-2008 at 22:07
by: angelhair |
Vacuum grease substitute?
I found a product by ROCOL called saphire silicon grease. It comes in a 250g tube, 500g and 2.5kg ca ... |
1-6-2008 at 21:24
by: angelhair |
Cleaning DCM/Chloroform
I used a techical H2SO4, slightly brown to clean some Pet ether that I distilled from petrol and it ... |
10-5-2008 at 15:45
by: angelhair |
H2O2. 2.5 years and still 35%
It seems that adding H3PO4 as a stabiliser and keeping it in the fridge does the trick. I titrated t ... |
7-5-2008 at 16:45
by: angelhair |
Vacuum grease substitute?
Can you use the silicon grease found in auto stores as a good enough substitute for high vacuum grea ... |
7-5-2008 at 16:21
by: angelhair |
Cleaning DCM/Chloroform
Can you use HCl to purify DCM and chloroform instead of H2SO4. Any disadvantages other than volume n ... |
7-5-2008 at 16:18
by: angelhair |
cheap glass beware!
I know a glass blower who is mixing the indian stuff with Duran when making condensers. He explained ... |
2-5-2008 at 19:28
by: angelhair |
Performic in SS or PP/PE vessel?
Because I've broken all my 2L flasks, also I was curious to know. What do you mean by "transition te ... |
2-5-2008 at 19:20
by: angelhair |
Formic acid from Hexamine/HCl?
Thanks, I might look at oxalic acid and glycerol route that I saw in my old organic text book by Coh ... |
2-5-2008 at 19:15
by: angelhair |
peracids
I was worried about my sinuses more than any thing else. Usually I just cover with plastic wrap, the ... |
2-5-2008 at 19:01
by: angelhair |
Formic acid from Hexamine/HCl?
What percentage of formic acid could you reasonably expect to get from a methylamine reaction using ... |
2-5-2008 at 18:50
by: angelhair |
Performic in SS or PP/PE vessel?
What's the chance of getting away with doing a performic in a stainless steel or PP/PE container.
... |
2-5-2008 at 18:45
by: angelhair |
performic preparation question
Usually I mix the two in a beaker, H2O2 about 4deg C and Formic about -7 Deg C, leave on the bench f ... |
22-4-2008 at 17:50
by: angelhair |
Very old Ethyl Ether
2.5L in a Brown bottle. Looks like this is a very polarizing issue. Half of you would take the risk ... |
21-4-2008 at 17:13
by: angelhair |
Purifying Denatured absolute EtOH Superheating problem
Klute, I will try it your way.
I have done this many, many times from 250ml up to 5L always in a ... |
21-4-2008 at 17:07
by: angelhair |
Getting rid of Bromine
Where can I read about these proceedures? Is it in Inorganic chemistry text books, or publications l ... |
21-4-2008 at 16:57
by: angelhair |
Purifying Denatured absolute EtOH Superheating problem
Not long at all, only a few minutes, then it starts distilling OK and after a little while I can see ... |
19-4-2008 at 20:55
by: angelhair |
Cleaning a absolute vacuum gauge type CR2
Lube? But all the mechanical parts are exposed to the vacuum. Won't that become a problem? |
19-4-2008 at 20:49
by: angelhair |
Purifying Denatured absolute EtOH Superheating problem
To 2L of DAA I added 20g NaOH and refluxed for 2 hours with overhead stiring then switched off heat ... |
19-4-2008 at 20:44
by: angelhair |
Cleaning a absolute vacuum gauge type CR2
I have a 100mm vacuum gauge that has become slightly fould over the years. The capsule won't rotate ... |
19-4-2008 at 20:28
by: angelhair |
Very old Ethyl Ether
I have a ten year old bottle of ethyl ether that has never been opened, never been taken out of the ... |
19-4-2008 at 20:18
by: angelhair |
Getting rid of Bromine
I like the sound of ammonium bromide and sodium bromide/ate. Is the reaction with Sodium carbonate v ... |
19-4-2008 at 20:07
by: angelhair |
Pet Ether from petrol
Before I posted this thread, I tested some SHELL "v-Power" Which I believe is 98 octane and the am ... |
19-4-2008 at 19:56
by: angelhair |
| [Next Page] |
