| Search |
| [Next Page] |
Success!
Having (mostly) gotten over my fear that the reacted solution is going to spontaneously explode, I c ... |
17-10-2004 at 19:19
by: miamicanes |
Synthesis of isatin from indigo via ozone, HNO3 and others
Victory at last! Well... kind of.
I finally got visible, measurable Isatin. That's the good ... |
15-10-2004 at 23:17
by: miamicanes |
Synthesis of isatin from indigo via ozone, HNO3 and others
[quote]This project does seem like mad, mad science given that you can buy 100g of isatin online for ... |
14-10-2004 at 04:53
by: miamicanes |
Synthesis of isatin from indigo via ozone, HNO3 and others
[quote]'90% dilute nitric acid'?[/quote]
about 10mL of indigo + water, 90mL of 70%/16M ni ... |
13-10-2004 at 21:00
by: miamicanes |
Synthesis of isatin from indigo via ozone, HNO3 and others
Well, in this case, I thought it justified a new thread because it's an entirely different reac ... |
13-10-2004 at 20:24
by: miamicanes |
Isatin synthesis via Nitric acid and Indigo
OK, I bit the bullet tonight and decided to try oxidizing the indigo using nitric acid despite my mi ... |
13-10-2004 at 17:01
by: miamicanes |
Synthesis of isatin from indigo via ozone, HNO3 and others
Just to conclude this thread in case anybody wants to try ozonating indigo to get Isatin -- it doesn ... |
12-10-2004 at 20:54
by: miamicanes |
Synthesis of isatin from indigo via ozone, HNO3 and others
Well, last night I found out that there is a way to turn anthranilic acid into isatoic anhydride, bu ... |
12-10-2004 at 05:59
by: miamicanes |
Synthesis of isatin from indigo via ozone, HNO3 and others
For what it's worth, here are some details about the first batch.
Initially, the mixture was ... |
11-10-2004 at 18:39
by: miamicanes |
Synthesis of isatin from indigo via ozone, HNO3 and others
Last night, I was happy. After running the apparatus all day with diluted indigo, it finally turned ... |
11-10-2004 at 08:09
by: miamicanes |
Synthesis of isatin from indigo via ozone, HNO3 and others
Oops. I meant nitroglycerine (which can definitely accelerate out of control if you're not incr ... |
9-10-2004 at 16:01
by: miamicanes |
opacity of glass, etc to UV-B and UV-A
Hmmm. How about the plastic used in clear flexible tubing (in particular, the kind used for aquarium ... |
9-10-2004 at 15:33
by: miamicanes |
Synthesis of isatin from indigo via ozone, HNO3 and others
How sure are you that dilute, cold nitric acid will react with indigo blue to form isatin with littl ... |
9-10-2004 at 10:20
by: miamicanes |
opacity of glass, etc to UV-B and UV-A
How much UV-B and UV-A are blocked by normal (home depot-type) glass? How about lucite?
I'm ... |
9-10-2004 at 09:45
by: miamicanes |
Synthesis of isatin from indigo via ozone, HNO3 and others
The UV is provided by a Turbo-Twist 6X aquarium/pond sterilizer. It's basically a UV compact fl ... |
9-10-2004 at 09:37
by: miamicanes |
Synthesis of isatin from indigo via ozone, HNO3 and others
t=12h update
My initial impression was disappointment. The solution doesn't appear to have l ... |
9-10-2004 at 08:31
by: miamicanes |
Synthesis of isatin from indigo via ozone, HNO3 and others
pH update...
at t=3 hours, I had a *hell* of a time trying to get anything resembling a stable pH ... |
8-10-2004 at 23:02
by: miamicanes |
Synthesis of isatin from indigo via ozone, HNO3 and others
Well, round #2 is underway, with slightly refined hardware.
Procedure so far:
approx. 3/4 gall ... |
8-10-2004 at 22:45
by: miamicanes |
Synthesis of isatin from indigo via ozone, HNO3 and others
update:
It looks like ozone was a necessary, but not sufficient, component of the reaction. Appar ... |
8-10-2004 at 05:05
by: miamicanes |
Attempt #1 at isatin synthesis -- failed.
Well, I made my first attempt at synthesizing isatin from indigo using ozone tonight and failed mise ... |
7-10-2004 at 21:02
by: miamicanes |
Synthesis of isatin from indigo via ozone, HNO3 and others
Whoops. It looks like I didn't get the reaction quite right. Apparently, the reaction's pr ... |
2-10-2004 at 21:17
by: miamicanes |
Synthesis of isatin from indigo via ozone, HNO3 and others
I saw the threads... the impression I got was that the various chemical methods proposed involved ch ... |
2-10-2004 at 20:23
by: miamicanes |
Synthesis of isatin from indigo via ozone, HNO3 and others
A little while ago, I managed to find another (seemingly) straightforward way to synthesize isatin f ... |
2-10-2004 at 19:35
by: miamicanes |
Picric Acid disposal
Uh, aside from being massively illegal, wouldn't that be incredibly dangerous as well? From wha ... |
1-10-2004 at 12:43
by: miamicanes |
Picric Acid disposal
OK, next question...
if I neutralize it using tin and HCl as described on page 344 of "Destr ... |
1-10-2004 at 09:26
by: miamicanes |
| [Next Page] |
