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Preparation of Diethyl Sulfate
[quote]Na2SO4 is added to the pot as a dehydrating agent.[/quote]
Of course, Na2SO4 cannot serve as ... |
23-12-2017 at 13:40
by: kmno4 |
Crystallisation of divalent metal sulfates in excess of sulfuric acid
[rquote=501152&tid=79158&author=Vylletra Heart]I fear that the excess acid can protonate sul ... |
21-12-2017 at 14:32
by: kmno4 |
Failed attempt at making NO2Cl
[quote]From literature I understood that ..... reaction is said to be smooth and complete[/quote]
I ... |
20-12-2017 at 16:49
by: kmno4 |
Chemistry of Terephthalic acid
[rquote=500735&tid=63196&author=Boffis]Hi kmno4, to get the 90% yield do you mean you had to ... |
20-12-2017 at 02:51
by: kmno4 |
Separating Gd, Ce, and Nd
[rquote=500606&tid=79020&author=elementcollector1](...)The proposed method was electrolytic ... |
16-12-2017 at 14:22
by: kmno4 |
Chemistry of Terephthalic acid
[quote]For Na2S2O4 reduction it was:
2 g of nitro-TPA, 5,8 g of Na2S2O4 (assuming ~85% purity), 2,3 ... |
16-12-2017 at 14:18
by: kmno4 |
Reduce cinnamaldehyde to hydrocinnamaldehyde
This "review" about Mg/MeOH, from COCh, again returns like shitty boomerang.
And again returns refe ... |
30-11-2017 at 13:49
by: kmno4 |
p-benzoquinone+acetone condensation
Thanks for the informations.
From time to time, I still think about this reaction, ha.
I attach th ... |
29-11-2017 at 12:45
by: kmno4 |
Chemistry of Terephthalic acid
For Na2S2O4 reduction it was:
2 g of nitro-TPA, 5,8 g of Na2S2O4 (assuming ~85% purity), 2,3 g of N ... |
29-11-2017 at 12:38
by: kmno4 |
Chemistry of Terephthalic acid
[b]Reduction of nitro-TPA (II)[/b]
a) Fe
2 g of nitro-TPA, 2 g of NaCl, 2 g of pulverized Fe, ~50 ... |
29-11-2017 at 02:34
by: kmno4 |
Chemistry of Terephthalic acid
[b]Nitration of TPA[/b]
Additional runs and interesting observations.
1) 6 g of TPA, 5 g of KNO3 ... |
19-11-2017 at 12:51
by: kmno4 |
An unknown, yellow Nickel compound
[rquote=496985&tid=78099&author=Tetra]An unknown, yellow Nickel compound [/rquote]
This is ... |
11-11-2017 at 08:47
by: kmno4 |
Chemistry of Terephthalic acid
Boffis, I made this titration with phenolphthalein as indicator, because it changes its colour at pH ... |
1-11-2017 at 12:41
by: kmno4 |
Chemistry of Terephthalic acid
[b]Nitration of TPA[/b]
Trial run.
To 100 cm3 Erlenmeyer flask with 30 g of conc. H2SO4 and magn ... |
26-10-2017 at 16:10
by: kmno4 |
Nitration of phthalic acid
Part 2, 3NPA
Cooled (r.t.),pasty post-nitration mixture is transfered (several portions) with aid ... |
13-10-2017 at 11:02
by: kmno4 |
Nitration of phthalic acid
Acronyms HA - phthalic acid;PHAN - phthalic acid anhydride; 3NPA 3-nitrophthalic
acid; 4NPA 4-nitro ... |
27-9-2017 at 13:59
by: kmno4 |
Optimizing Henry reaction conditions (substituted benzaldehydes + nitromethane)
[rquote=492018&tid=76743&author=Melgar][b]Optimizing Henry reaction conditions (substituted ... |
14-9-2017 at 07:09
by: kmno4 |
Most hydrophilic: MgO, CaCl2, Cu(NO3)2, Ca(NO3)2, CuSO4, NH4NO3 - Very interesting Results!!
[rquote=491815&tid=76664&author=RogueRose]
MgO - Side walk deicer[/rquote]
Funny (or s ... |
9-9-2017 at 11:46
by: kmno4 |
Good way to Methylamine HCl?
No, I used iron scraps of all possible kind: corroded and not corroded nails (1-5 cm long), wire (ab ... |
25-6-2017 at 13:34
by: kmno4 |
What exactly is the reaction between methylene chloride and aluminum?
[rquote=480572&tid=73271&author=Boffis]
In the abstract you give they give a reference [25] ... |
19-6-2017 at 13:23
by: kmno4 |
Good way to Methylamine HCl?
[rquote=485303&tid=1261&author=Mush][rquote=156061&tid=1261&author=kmno4]I have just ... |
17-6-2017 at 14:33
by: kmno4 |
Solute for Metal oxides
The answer is : ionic liquids.
Many 'insoluble' oxides (CuO, Fe2O3, Cr2O3, Al2O3, MnO2....) are sol ... |
23-5-2017 at 03:52
by: kmno4 |
What exactly is the reaction between methylene chloride and aluminum?
Even simple calculations for reaction:
Al+CH2Cl2 -> AlCl3 + ethylene (or methane +C, etc...)
sh ... |
16-4-2017 at 02:59
by: kmno4 |
Super oxidizer: combination of periodate and peroxodisulfate
It is reinventing the wheel, see informations about periodatonickelates in wikipedia (for exaple)
S ... |
15-2-2017 at 11:30
by: kmno4 |
Benzaldehyde synthesis using aqueous nitric acid
See interesting article, posted long time ago on the board :
http://www.sciencemadness.org/talk/fil ... |
9-2-2017 at 09:10
by: kmno4 |
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