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Drying Acetone with Desiccant in Nylon Mesh Bags
https://www.sciencedirect.com/science/article/pii/B9780128054574500033
https://doi.org/10.1016/B978 ... |
29-8-2020 at 21:30
by: outer_limits |
European Sulfuric Acid Ban
I know at least one drain cleaner which is 96% H2SO4 according to product SDS which is available in ... |
27-8-2020 at 14:54
by: outer_limits |
Volumetric Measurement - Reading graduated cylidenders
Not really, but maybe it depends on the supplier.
For example, I bought this one as 1000ml and th ... |
25-8-2020 at 22:53
by: outer_limits |
Volumetric Measurement - Reading graduated cylidenders
As you can see below the cylinder's scale +-1.0, the first one has tolerance up to 1.0ml and the sec ... |
25-8-2020 at 21:28
by: outer_limits |
Latest chemical order?
This week:
- 80 TLC plates
- 50 keck clips from ebay (in "normal" online shops they are 4-6 time ... |
19-8-2020 at 10:02
by: outer_limits |
Testing a fume hood?
[rquote=643307&tid=156039&author=Fyndium]The negative pressure from suction makes leaks only ... |
18-8-2020 at 08:07
by: outer_limits |
Testing a fume hood?
Checking the airflow is one thing.
The other is to be sure that there are no leaks.
|
18-8-2020 at 00:18
by: outer_limits |
Distilling esters with very high boiling points?
[quote]
6: vacuum distill (the round bottom flask needs to be big to avoid splashing liquid spillin ... |
17-8-2020 at 20:54
by: outer_limits |
Copper bromide from copper sulphate
That's right, Hbr + CuO is way to go.
Anyway, it was a nice small experiment |
14-8-2020 at 02:47
by: outer_limits |
Copper bromide from copper sulphate
It seems that it failed and I get a complex instead of pure CuBr2.
I've checked the solubility by ... |
14-8-2020 at 02:01
by: outer_limits |
Distilling esters with very high boiling points?
1-butanol has boiling point at 118 C. Evaporate it, there is no need to heat the mixture to 300 C |
13-8-2020 at 13:46
by: outer_limits |
Copper bromide from copper sulphate
This is the product yielded from extraction
[file]82739[/file]
[rquote=642956&tid=15602 ... |
13-8-2020 at 12:16
by: outer_limits |
Copper bromide from copper sulphate
The final product is black as you can see in crystallisation dish.
The thing on filter is a preci ... |
13-8-2020 at 12:09
by: outer_limits |
phosphoric acid titration
It could be titrated as 3-protonic acid by using Ca2+ or Ag+ and NaOH
2H3PO4 + 3Ca^2+ + 6OH- -> ... |
13-8-2020 at 12:06
by: outer_limits |
Copper bromide from copper sulphate
There were no white crystals in final product. After evaporation everything was black with some gree ... |
13-8-2020 at 11:19
by: outer_limits |
Copper bromide from copper sulphate
Ok, chemistry is done and here are the results
1 gram of CuSO4 *5H2O (4 mmol) and 0.95 grams of ... |
13-8-2020 at 11:11
by: outer_limits |
Copper bromide from copper sulphate
And I'm going to try it now  |
13-8-2020 at 08:37
by: outer_limits |
Copper bromide from copper sulphate
I thought about making some copper(II) bromide from copper sulphate and potassium bromide.
What I ... |
13-8-2020 at 08:13
by: outer_limits |
What happened to n2o3.com
The last one was made in April 2020. I received only 1 email with order confirmation. |
9-8-2020 at 00:54
by: outer_limits |
Tired of reporting spam
Simple solution:
implement a feature that will require moderator's approval for the first 10 post ... |
8-8-2020 at 13:22
by: outer_limits |
What features would you add on sciencemadness
And what value would be added by providing the mobile application?
Layout is a bit harsher in compa ... |
8-8-2020 at 13:10
by: outer_limits |
Quantitative analysis of sorbic acid
My analytical textbook says that the concentration should be checked every 3-4 months.
This paper s ... |
8-8-2020 at 02:22
by: outer_limits |
What happened to n2o3.com
I made some orders so I can say something about them.
Once I've ordered anhydrous aluminium chlor ... |
7-8-2020 at 03:37
by: outer_limits |
Spam slipping through (edited post)
[rquote=642342&tid=155936&author=Belowzero]I am betting this is not hardcore chemistry [/r ... |
6-8-2020 at 23:05
by: outer_limits |
Latest chemical order?
Benzene, magnesium, chromic anhydride, diethyl ether, acetone
It's time to do some Grignard react ... |
6-8-2020 at 05:11
by: outer_limits |
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