| Search |
| [Next Page] |
Ampoules and others label design for printing
The labels are good-looking, but for the small ampoules I would make them smaller. You only see litt ... |
1-2-2021 at 03:01
by: woelen |
Iron(III) from Mohr's salt
Smell of sulphur? You mean sulphur dioxide?
Are you sure that your sodium peroxodisulfate (Na2S2O ... |
1-2-2021 at 02:54
by: woelen |
Indium sulfide
I also think that they are hydrous In2S3, but there may be some sodium sticking to it as well. That' ... |
1-2-2021 at 00:05
by: woelen |
Chemicals that color everything even when invisible
Rhodamine B really is horrible. KMnO4 only has weak color, compared to rhodamine B. I purchased 100 ... |
31-1-2021 at 12:43
by: woelen |
Do selenonic acids explode?
What you describe here is not normal selenic acid, but the selenium variation of oleum. This is MUCH ... |
31-1-2021 at 11:34
by: woelen |
Do selenonic acids explode?
No, they are not explosive. I have done quite a few experiments with selenic acid and with selenous ... |
30-1-2021 at 09:46
by: woelen |
Rare and hard to obtain chemicals for sale
Thread pruned, rest of thread is good for detritus.
@FrenchChemist: You did not order anything fr ... |
29-1-2021 at 12:11
by: woelen |
Latest chemical order?
[rquote=651811&tid=9890&author=woelen]I now also ordered 100 grams of realgar, the red arsen ... |
27-1-2021 at 00:11
by: woelen |
Metal Identification
The orange color also may be due to the presence of vanadium. Hydrous V2O5 is orange and only sparin ... |
27-1-2021 at 00:05
by: woelen |
The simplest preparation of sulfuric acid?!
Maybe NaHSO4 is too soluble in methanol. Longer chain alcohols might work better in that case, but t ... |
25-1-2021 at 13:03
by: woelen |
Ammonium ozonide
I agree about the level on Youtube, but the involved chemistry will also be completely out of reach ... |
25-1-2021 at 13:00
by: woelen |
The simplest preparation of sulfuric acid?!
@Tsjerk: That sounds really promising. This may be a very good route for making H2SO4 for a decent p ... |
25-1-2021 at 07:29
by: woelen |
KCl or KHCO3 / K2CO3 from KNO3
Maybe look for a source for food grade KCl? Where I live, I can buy snow white 99.9% pure KCl, EUR 1 ... |
25-1-2021 at 02:42
by: woelen |
The simplest preparation of sulfuric acid?!
[rquote=644239&tid=79548&author=Tsjerk]This reaction works and is nearly quantitative. I add ... |
25-1-2021 at 01:51
by: woelen |
Ammonium ozonide
Both types of videos have a place besides each other. I also enjoy the remarkable chemistry, demonst ... |
25-1-2021 at 01:16
by: woelen |
Rare and hard to obtain chemicals for sale
I also am very happy with an order from chemship1978.
Perfect service and the materials were very w ... |
20-1-2021 at 07:32
by: woelen |
Copper II Chloride From Cu2(OH)2CO3 & HCl
A practical method: Just use some excess copper carbonate and allow the mix to react for a day or so ... |
20-1-2021 at 04:20
by: woelen |
Pretty Pictures (2)
That looks really nice. I have the ZnS:Cu variation, but I did not know of the other beautifully col ... |
19-1-2021 at 00:30
by: woelen |
Copper dibromodiiodocadmate
Depends on how much KI you add to CuSO4. If you add excess KI, then no solid iodine will be visible, ... |
18-1-2021 at 00:17
by: woelen |
Copper dibromodiiodocadmate
I think that the combination of copper(II) and iodide is not a stable one. Copper(II) oxidizes iodid ... |
17-1-2021 at 12:26
by: woelen |
THIS WILL BE ILLEGAL IN FEBURARY 2021 (EU)
In some countries of the EU it will be possible to obtain a license for using H2SO4 or HNO3 at highe ... |
16-1-2021 at 03:48
by: woelen |
How to make Sodium chlorite??
My mistake, the process is as follows:
- Make ClO2 from NaClO3, HCl and some reductor (frequently, ... |
12-1-2021 at 00:05
by: woelen |
How to make Sodium chlorite??
It is made commercially by reducing NaClO3 with H2O2 at high pH.
But it can be purhased online (e ... |
11-1-2021 at 12:59
by: woelen |
Very dizzy after melting sulfur - what happened?
Melting sulfur does not produce H2S. I have melted sulfur myself many times, and not just a single g ... |
11-1-2021 at 01:42
by: woelen |
Purple acid, N2O2HSO4
The acid can be obtained in quite high concentrations, such that even 2 cm of liquid is nearly black ... |
9-1-2021 at 13:00
by: woelen |
| [Next Page] |
