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Found a little piece of history
I stumbled upon this little bottle, a few years ago. A student had obtained it from an old lab, whic ... |
21-5-2021 at 00:14
by: woelen |
Prices of Palladium and Rhodium have SKYROCKETED - here's what I see happening.
Where did you buy the osmium and ruthenium? I also consider buying some of these, but the sellers I ... |
17-5-2021 at 10:31
by: woelen |
"Instant Orange Juice" with Cuprous Hydroxide - Why is Cu(I) forming instead of Cu(II)?
Great experiment and beautiful pictures, which stand out in their simplicity and clean background.
... |
16-5-2021 at 23:10
by: woelen |
Procurement of Heptane in Germany
This may be an option for you as well: https://www.deoplosmiddelspecialist.nl/kopen/heptaan
Just ... |
5-5-2021 at 11:23
by: woelen |
Copper complexes with tris
What surprises me is not only the deprotonation of an hydroxy-group, but in this particular structur ... |
5-5-2021 at 11:14
by: woelen |
Copper complexes with tris
Very interesting experiments. Especially the so-called H-1tris-complex is interesting. If I look at ... |
5-5-2021 at 10:56
by: woelen |
What is this metal?
Does it dissolve in conc. HNO3?
What if added to a mix of conc. HCl and 30% H2O2?
If it dissolve ... |
4-5-2021 at 04:28
by: woelen |
Report on making metal sorbates
Interesting result. The low density most likely is due to trapped air. I think that you obtained a t ... |
3-5-2021 at 22:40
by: woelen |
First Bismuth Trioxide
I have a reagent grade commercial sample of Bi2O3. It does not contain carbonate (produces no bubble ... |
2-5-2021 at 23:16
by: woelen |
Acyl chlorides stability
[rquote=647415&tid=156390&author=Cou]But I dunno how important it is to only open the bottle ... |
29-4-2021 at 04:24
by: woelen |
Chromium(III) sulphate available on ebay UK
The name of the compound and the formula are not consistent. The label says chromium sulfate (basic) ... |
28-4-2021 at 05:12
by: woelen |
Chromium(III) sulphate available on ebay UK
I assume it is this one:
https://www.ebay.co.uk/itm/152381325518?hash=item237aa280ce:g:jE0AAOSw2x ... |
27-4-2021 at 23:17
by: woelen |
N2O5 from NO2 and Ozone?
NO2 and ozone indeed are said to react with each other, giving N2O5 (some textbooks even claim furth ... |
27-4-2021 at 23:04
by: woelen |
Easiest way to make red selenium
I know of this precedure. You can speed up the procedure by adding some chloride (e.g. dilute HCl). ... |
25-4-2021 at 22:57
by: woelen |
Sulfur Iodine Methanol Reaction Failure.
It is simple, sulfur does not react with I2. The sulfur just sits there as an inert filler. You coul ... |
20-4-2021 at 23:02
by: woelen |
Interesting read about a new type of bond found in a new compound
This is quite interesting. Recently, the anionic species NaBH3(-) was synthesized and a computationa ... |
19-4-2021 at 11:26
by: woelen |
A few exotic compositions
Bitartrate contains a lot of oxygen and with red hot finely powdered magnesium metal nearly everythi ... |
19-4-2021 at 09:53
by: woelen |
phosphine generation from baking powder
I think that your product is (very impure) Mg3P2. Magnesium certainly can reduce phosphate to phosph ... |
19-4-2021 at 09:44
by: woelen |
Can you store 95% sulfuric acid in HDPE for a long time?
For me, acid getting brown or darker IS an issue. It still may be fine for carbonizing paper or clea ... |
18-4-2021 at 11:03
by: woelen |
A few exotic compositions
Magnesium with nearly anything, which can be reduced further. Some examples:
Mg + red P --> ve ... |
18-4-2021 at 09:45
by: woelen |
Why samarium has red colour in selenous acid?
I have some 99.95% samarium, intended as sample for my element collection, but half of it is oxidize ... |
18-4-2021 at 09:32
by: woelen |
Why samarium has red colour in selenous acid?
I remember that I added samarium metal to some dilute acid (e.g. HCl) and that the solution had a st ... |
17-4-2021 at 11:23
by: woelen |
Can you store 95% sulfuric acid in HDPE for a long time?
Battery acid is no problem, the concentrated acid is (in the long run).
Concentrated HCl (37%) is a ... |
16-4-2021 at 01:08
by: woelen |
Can you store 95% sulfuric acid in HDPE for a long time?
I also had sulfuric acid in HDPE bottles, but over time, the plastic became darker and darker grey. ... |
15-4-2021 at 22:59
by: woelen |
Latest chemical order?
Analytical reagent grade basic lead acetate, having approximate composition Pb(OH)[sub]1.15[/sub](CH ... |
15-4-2021 at 06:14
by: woelen |
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