chemrox
International Hazard
Posts: 2961
Registered: 18-1-2007
Location: UTM
Member Is Offline
Mood: LaGrangian
|
|
iodine bottle issue
I've had this bottle of I2 for a couple of years. The bottle is getting stickey and the label is getting discolored. My fingers get stained when I
open it. I opened it about 20 months ago and have used it several times since. This just started happening. Can't think of why. Any ideas come to
mind?
[Edited on 16-10-2007 by chemrox]
|
|
|
Xenoid
National Hazard
Posts: 775
Registered: 14-6-2007
Location: Springs Junction, New Zealand
Member Is Offline
Mood: Comfortably Numb
|
|
There is a thread on iodine storage and associated problems here:
http://www.sciencemadness.org/talk/viewthread.php?tid=3869&a...
Regards, Xenoid
[Edited on 16-10-2007 by Xenoid]
|
|
|
Jdurg
Hazard to Others
Posts: 220
Registered: 10-6-2006
Location: Connecticut, USA
Member Is Offline
Mood: No Mood
|
|
Heh. Halogens are the absolute worst elements to store. The buggers will eat through just about ANYTHING you put them in. I've found that the ONLY
way to store them without any amount at all escaping is to seal them in a thick walled glass ampoule and then surrounding that ampoule in a solid
resin. Of course, that doesn't work with Fluorine as nothing works with Fluorine. 
I had bromine stored in a glass vial for a VERY short while before it ate through the Teflon coated cap and corroded everything. I then went and had
my Br2 sealed in a glass ampoule, but over the course of a year it ate through the glass and weakened it. Finally, about two years ago, I had it
sealed in a thicker glass ampoule and then put inside an acrylic resin block with my other halogens. Not one molecule has leaked out.
For Iodine, I still use my I2 crystals fairly regularly, so I haven't fully sealed ALL of my I2 away. I just have it in an amber bottle with a Teflon
lid, placed inside a metal can which is then placed inside a larger metal can with a mixture of vermiculite and sodium thiosulfate infused vermiculite
in there to react with any I2 that does escape. Still, the metal cans are being corroded as time goes by.
\"A real fart is beefy, has a density greater than or equal to the air surrounding it, consists of the unmistakable scent of broccoli, and usually
requires wiping afterwards.\"
http://maddox.xmission.com. |
|
|
johnm213
Harmless
Posts: 1
Registered: 23-10-2007
Member Is Offline
Mood: No Mood
|
|
"
For Iodine, I still use my I2 crystals fairly regularly, so I haven't fully sealed ALL of my I2 away. I just have it in an amber bottle with a Teflon
lid, placed inside a metal can which is then placed inside a larger metal can with a mixture of vermiculite and sodium thiosulfate infused vermiculite
in there to react with any I2 that does escape. Still, the metal cans are being corroded as time goes by. "
The vermiculite/ thiosulfate is a good idea. Stops gaseous iodine from building up to any signifigant level
|
|
|
chemrox
International Hazard
Posts: 2961
Registered: 18-1-2007
Location: UTM
Member Is Offline
Mood: LaGrangian
|
|
Br2 ate through a teflon cap? Mine came in a bottle. Also when I bought some years ago. I was going to make some Grignard and put it away.
Sheeeit! I like the vermiculite too. What about the Br container??
|
|
|
![[*]](images/xpblue/default_icon.gif){kind=icon}
