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A Beginner Microscope
Everything beyond 100x is useless, 200x doesn't have to be bad but it doesn't make sense as the diff ... |
13-10-2021 at 23:07
by: Tsjerk |
Sodium chloride and sodium nitrate seperation.
[rquote=666159&tid=158002&author=danieldavies]Ratio is around 10/1. So 10% sodium contaminat ... |
13-10-2021 at 13:05
by: Tsjerk |
Curious glass electrical conduction effect
There was a sticky made not too long ago about checking stress in glass. Maybe you have the means to ... |
13-10-2021 at 12:56
by: Tsjerk |
Ohaus again (balances and hotplates)
Nice thermometer!
Gravity isn't programmed into scales as they are calibrated against a calibrati ... |
13-10-2021 at 12:00
by: Tsjerk |
Sodium chloride and sodium nitrate seperation.
[rquote=666169&tid=158002&author=Fulmen]Wouldn't the common ion effect work to our advantage ... |
13-10-2021 at 11:28
by: Tsjerk |
CBD as a chemotherapy agent (split from CBD solubility in organic solvents)
That are some impressive doses  what is that? 1000x normal dose? I really don't
know anything abou ... |
12-10-2021 at 14:17
by: Tsjerk |
Sodium chloride and sodium nitrate seperation.
[rquote=666118&tid=158002&author=danieldavies]Are you saying any HCl contamination will gas ... |
12-10-2021 at 14:01
by: Tsjerk |
Stereochemistry of the ibogaloid catharanthine
The first doesn't show stereochemistry, only the lines that are darker (broader) show a group is poi ... |
12-10-2021 at 13:37
by: Tsjerk |
cleaning heating mantle after spill?
Methanol doesn't contain MEK, as it doesn't need to be denatured.
You probably used enough solven ... |
12-10-2021 at 11:00
by: Tsjerk |
CBD as a chemotherapy agent (split from CBD solubility in organic solvents)
@macckone: I don't see why toxicity and therapeutic range are relevant for a discussion about solubi ... |
12-10-2021 at 10:51
by: Tsjerk |
Purifying Canadian tire Heptane
Did the people recommending this procedure do any GC or MS on the "heptane"? I don't think so. The p ... |
10-10-2021 at 13:13
by: Tsjerk |
Purifying Canadian tire Heptane
Nice to see some photos!
@S.C. Wack: It is super technical grade, probably some sulfur containin ... |
10-10-2021 at 12:26
by: Tsjerk |
Purifying Canadian tire Heptane
Yes, the procedure produces toluenesulfonic acid as a side product, which is a nice to have. The rea ... |
10-10-2021 at 05:55
by: Tsjerk |
Hexamine tablet extraction - what happened?
I was referring to the post of Monoamine. |
9-10-2021 at 23:11
by: Tsjerk |
Purifying Canadian tire Heptane
With toluene, I used reflux as the procedure seems to take a long time, maybe the color gets darker ... |
9-10-2021 at 11:59
by: Tsjerk |
Purifying Canadian tire Heptane
You could have a look at how toluene is cleaned with sulfuric acid, this is done by refluxing. I don ... |
9-10-2021 at 08:12
by: Tsjerk |
Ohaus again (balances and hotplates)
[rquote=665968&tid=157984&author=Keras][rquote=665944&tid=157984&author=MidLifeChemi ... |
8-10-2021 at 00:57
by: Tsjerk |
Ohaus again (balances and hotplates)
[url=https://www.bol.com/nl/nl/p/on-balance-nv-500-professionele-precisie-weegschaal-0-01-gram-nauwk ... |
5-10-2021 at 12:50
by: Tsjerk |
Hexamine tablet extraction - what happened?
Hexamine is not going to like any heating with a strong acid around. |
5-10-2021 at 02:45
by: Tsjerk |
Ohaus again (balances and hotplates)
I have a 20 euro 0.01 gram scale for years now and sure it can't actually measure anything below 0.0 ... |
4-10-2021 at 09:04
by: Tsjerk |
Separation of two inorganic compounds
When you want to dissolve ammonia gas in water, make sure to cool the solution. The colder it is the ... |
4-10-2021 at 04:52
by: Tsjerk |
cleaning heating mantle after spill?
If you have a low yield to you either used to little ethanol or too much; either not all ASA dissolv ... |
2-10-2021 at 23:33
by: Tsjerk |
Calcium Sulphate Destroys Glassware
I think you heated the flask too much. I never distilled nitric acid from this mix, but when I did I ... |
28-9-2021 at 13:36
by: Tsjerk |
What does your periodic table look like? (collection)
Gold foil is cheap, it is really not much. I don't know how they put the Tc on, but I guess gold foi ... |
27-9-2021 at 13:22
by: Tsjerk |
Troublesome disposal of DMSO/DCM mix
Flush it down the drain when what you're working with is less than a liter. |
25-9-2021 at 14:07
by: Tsjerk |
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