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Estimating boiling points at reduced pressure
Does anyone know how to estimate the boiling point of a liquid at reduced pressure? For example if I ... |
9-10-2020 at 06:59
by: Boffis |
The reaction of guanidine with alkyl thiuronium salts
I have been trying to prepare biguanide for some time. There are numerous published methods but in e ... |
7-10-2020 at 08:19
by: Boffis |
I think hexane can be used as a Dean-Stark solvent alternative to benzene
But won't the butanol also form an ester? |
2-10-2020 at 08:30
by: Boffis |
Sodium sulphite spontaneous oxidation
Update. From just under 300g of crude, 40 year old (like woelen's), heptahydrate I recovered roughly ... |
2-10-2020 at 07:47
by: Boffis |
I think hexane can be used as a Dean-Stark solvent alternative to benzene
That's interesting, I have often wonder if hexane or cyclohexane could be used as a substitute for b ... |
2-10-2020 at 07:25
by: Boffis |
Aesthetic Aromatics: Preliminaries
Thanks Pumukli, sorry to hear about your problems hope they sort themselves out!
Having prepared ... |
2-10-2020 at 04:14
by: Boffis |
Non trivial nickel boride
Hi njl; I would say before re-inventing the wheel check out the numerous volumes of textbooks of ino ... |
30-9-2020 at 10:15
by: Boffis |
Aesthetic Aromatics: Preliminaries
[rquote=640144&tid=155719&author=Pumukli]Perhaps you could include 1,3,5-triacetyl-benzene, ... |
30-9-2020 at 04:32
by: Boffis |
Neutralization Equivalence (NE) value
I am using, as I said, phenolphthalein as indicator. The pKa of p-chlorobenzoic acids is 3.99 about ... |
28-9-2020 at 11:43
by: Boffis |
Neutralization Equivalence (NE) value
The NE value of a carboxylic acid is in effect the molecular weight if the acid is a mono-protic aci ... |
28-9-2020 at 04:00
by: Boffis |
Sodium sulphite spontaneous oxidation
@unionised; I think you are right. I have just reheated the beaker slowly and when the crystal mass ... |
27-9-2020 at 13:53
by: Boffis |
Sodium sulphite spontaneous oxidation
I tried to recrystallise it by dissolving 300g of crude salt in 300ml of warm water. It dissolve rap ... |
27-9-2020 at 09:22
by: Boffis |
Sodium sulphite spontaneous oxidation
[rquote=644927&tid=156187&author=Boffis]Thanks Unionised, Hmmm, thats interesting. I wonder ... |
26-9-2020 at 14:23
by: Boffis |
High pressure reactors
I actually have a small one of those reaction vessels and I am quite happy with mine. Mine is only 5 ... |
25-9-2020 at 03:54
by: Boffis |
1,8 dyhdroxyanthraquinone
No I don't think LiOH will polymerise a hydroxy anthraquinone but you will need to give us a fair bi ... |
24-9-2020 at 11:43
by: Boffis |
Sodium sulphite spontaneous oxidation
Thanks Unionised, Hmmm, thats interesting. I wonder how easy it is to recrystallise? |
21-9-2020 at 09:15
by: Boffis |
Sodium sulphite spontaneous oxidation
I recently carried out the preparation of sodium dithionate (Na2S2O6) using the method in a standard ... |
21-9-2020 at 02:14
by: Boffis |
Ammonium bromide route for rare earth bromides
No, Ce2O3 should be OK but preparing this oxide and preventing from oxidizing to CeO2, which it does ... |
19-9-2020 at 10:34
by: Boffis |
Azobisisobutyronitrile synthesis
I am pretty sure that there is a preparation of this compound on the SM site. Try the search engine. ... |
19-9-2020 at 08:45
by: Boffis |
Ammonium bromide route for rare earth bromides
CeO2 will almost certainly oxidize bromide ions to bromine which will then contaminate the product. ... |
19-9-2020 at 08:43
by: Boffis |
Vanillin bisulfite adduct
Vanillin is very resistant to oxidation under any conditions. It seems that the more complex hydroxy ... |
12-9-2020 at 11:11
by: Boffis |
New chemicals for sale !
Mmmm... I think some people are a little sensitive.
I have bought all sorts of interesting reagen ... |
12-9-2020 at 09:44
by: Boffis |
1-Dodecylpyridinium bromide as PTC
@njl, benzalalkonium chloride is a quaternary amine salt, if you react it with NaOH you with simply ... |
10-9-2020 at 03:31
by: Boffis |
Mononitration of bromo and fluorobenzene
On the SM site there is an excellant account of the dinitration of bromobenzene to 2,4-dinitrobromob ... |
16-8-2020 at 14:29
by: Boffis |
ethyl formate - esterification by reactive distillation
I have now worked up the products from my ethyl formate preparations. The 1L of fresh acid gave afte ... |
16-8-2020 at 04:00
by: Boffis |
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