Sciencemadness Discussion Board
Not logged in [Login ]
Go To Bottom

Search
[Next Page]
Accidentally making potassium picrate(?)
Yesterday, I tried to make some picric acid from a procedure that has been successful in the past, b ...
5-6-2021 at 14:00
by: night429
Azo dye: p-aminophenol and 4-chloro-2-nitrophenol
It's interesting that there's the possibility of both inter- and intramolecular anhydride formations ...
17-5-2021 at 13:03
by: night429
Azo dye: p-aminophenol and 4-chloro-2-nitrophenol
Hey Fery, Yep, you do get 6-hydroxyquinoline! I'm following the 8-hydroxyquinoline prep from Vogel, ...
17-5-2021 at 08:49
by: night429
Azo dye: p-aminophenol and 4-chloro-2-nitrophenol
Thanks Boffis, I'll have to try that instead for the hydrochloride! I haven't done too much research ...
16-5-2021 at 23:44
by: night429
Azo dye: p-aminophenol and 4-chloro-2-nitrophenol
Huh, I've found that p-aminophenol doesn't discolor at all when stored as the freebase... just stays ...
16-5-2021 at 20:51
by: night429
Azo dye: p-aminophenol and 4-chloro-2-nitrophenol
Hi pumpkins, I should really try that. I thought that the one-pot would have been less work, but it ...
16-5-2021 at 17:45
by: night429
Synthesis of 4-chloro-2-nitrophenol
Thanks Boffis! That makes sense, and I know practically nothing about actual dye processes. I tested ...
11-5-2021 at 10:14
by: night429
Synthesis of 4-chloro-2-nitrophenol
So, after a couple of months, I finally decided to revisit this. I don't know what happened, but I g ...
9-5-2021 at 19:35
by: night429
Azo dye: p-aminophenol and 4-chloro-2-nitrophenol
Hey Fery,
Okay, I'm glad to know the purity can be quite high from pills. I may try to redo the rec ...
9-5-2021 at 12:45
by: night429
Azo dye: p-aminophenol and 4-chloro-2-nitrophenol
Hey Fery,
Thank you! I was unaware that temperature could be quite higher than the temperatures typ ...
9-5-2021 at 08:13
by: night429
Azo dye: p-aminophenol and 4-chloro-2-nitrophenol
So, I've decided to try my hand at making an azo dye between these two compounds, just because I nev ...
8-5-2021 at 15:48
by: night429
Synthesis of 4-chloro-2-nitrophenol
Thanks Boffis, I'll take a look at it! I'm surprised to hear that the reaction time is so much longe ...
6-3-2021 at 17:58
by: night429
Synthesis of 4-chloro-2-nitrophenol
Thanks! I was unaware that it wasn't very soluble in hydrochloric acid. I don't have access to my su ...
3-3-2021 at 11:43
by: night429
Synthesis of 4-chloro-2-nitrophenol
An update to my previous post:

The yellow crystals dried to an off-white, which concerned me, si ...
1-3-2021 at 22:50
by: night429
Synthesis of 4-chloro-2-nitrophenol
Sad to hear that it tarred up! That's a good idea, and I'm interested in hearing how the diazonation ...
27-2-2021 at 16:09
by: night429
Synthesis of 4-chloro-2-nitrophenol
Hi Boffis, I haven't had the opportunity to run the experiment yet. It definitely sounds like someth ...
22-2-2021 at 14:21
by: night429
Synthesis of 4-chloro-2-nitrophenol
Ah okay, that makes sense. I could try to prepare and use the monoacetate ester when I get the chanc ...
17-2-2021 at 14:48
by: night429
Synthesis of 4-chloro-2-nitrophenol
That's a good point. The last thing I'd want is to deal with something like acrolein.

My target i ...
16-2-2021 at 13:56
by: night429
Synthesis of 4-chloro-2-nitrophenol
Thanks Boffis! I was hesitant to use more sodium hydroxide as the book warns that too concentrated s ...
16-2-2021 at 09:02
by: night429
Synthesis of 4-chloro-2-nitrophenol
I followed the procedure outlined on page 109 of "Fundemental Processes of Dye Chemistry" scaled dow ...
15-2-2021 at 14:31
by: night429
Bubbling from nitrourea
[rquote=651247&tid=156736&author=Boffis]You always get a little bubbling from this reaction ...
21-12-2020 at 20:54
by: night429
Purification of phenelzine
I followed [url=https://patents.google.com/patent/CN107188822A/en]a patent[/url] to make phenelzine ...
21-12-2020 at 20:50
by: night429
Bubbling from nitrourea
I've attempted to make nitrourea on two occasions. In both of these, I follow the same general proce ...
12-12-2020 at 20:11
by: night429
Azo dye from p-aminophenol and salicylic acid
[rquote=647829&tid=156049&author=Texium (zts16)]Nice job! Do you have the means to character ...
30-10-2020 at 21:30
by: night429
Azo dye from p-aminophenol and salicylic acid
Only replying to say that I was successful in making this compound, and I've attached a picture of i ...
30-10-2020 at 19:24
by: night429
[Next Page]

  Go To Top