ger.wat
Harmless
Posts: 2
Registered: 25-1-2018
Member Is Offline
Mood: No Mood
|
|
Titanium Tetra-chloride Bottling
My employer used to make a device for testing air movement that used Titanium Tetra-chloride in 10ml snap top vials with a long narrow neck for
hermetic sealing. 20 yrs ago we were able to get it easily and it became harder as time went on. The guy that did the job at our original supplier
retired and we were never able to find anyone else that would do it more than once. I did it myself a few times and stopping fumes long enough to melt
the glass on the end of the neck was always very difficult.
FYI: TiCl4 is Titanium dissolved in pure hydrochloric acid. It reacts with humidity to make beautiful dense white "smoke." When trying to seal vials,
the titanium in the fumes contaminates the glass surface so the melted glass won't stick to itself.
So here's my question: how do I stop the fuming while still being able to hermetically seal the neck of the vial? Ideas?
|
|
|
PirateDocBrown
National Hazard
Posts: 570
Registered: 27-11-2016
Location: Minnesota
Member Is Offline
Mood: No Mood
|
|
Stick in a small tube with an argon bleed to purge the air inside the ampoule. Heat the ampoule neck till it's soft enough to crimp. Pull out the
argon line, then crimp.
Alternatively, melt the neck electrically, inside an inert gas dry box.
Phlogiston manufacturer/supplier.
For all your phlogiston needs.
|
|
|
DJF90
International Hazard
Posts: 2266
Registered: 15-12-2007
Location: At the bench
Member Is Offline
Mood: No Mood
|
|
Freeze the sample in the ampoule using a dry ice-acetone bath, vac/purge the headspace with argon, then seal as normal (whilst still being cooled in
the bath)
|
|
|
Bert
Super Administrator
Posts: 2821
Registered: 12-3-2004
Member Is Offline
Mood: " I think we are all going to die. I think that love is an illusion. We are flawed, my darling".
|
|
These guys seem to sell a refill kit of the Titanium tetrachloride ampoules-
http://www.airflowdirection.com/smokeproducts.htm
Unless that's YOUR company and stock is depleted?
[Edited on 26-1-2018 by Bert]
Rapopart’s Rules for critical commentary:
1. Attempt to re-express your target’s position so clearly, vividly and fairly that your target says: “Thanks, I wish I’d thought of putting it
that way.”
2. List any points of agreement (especially if they are not matters of general or widespread agreement).
3. Mention anything you have learned from your target.
4. Only then are you permitted to say so much as a word of rebuttal or criticism.
Anatol Rapoport was a Russian-born American mathematical psychologist (1911-2007).
|
|
|
unionised
International Hazard
Posts: 5104
Registered: 1-11-2003
Location: UK
Member Is Offline
Mood: No Mood
|
|
No it isn't.
|
|
|
ninhydric1
Hazard to Others
Posts: 345
Registered: 21-4-2017
Location: Western US
Member Is Offline
Mood: Bleached
|
|
That would form TiCl3, which doesn't fume.
The philosophy of one century is the common sense of the next.
|
|
|
Nicodem
|
Thread Moved
27-1-2018 at 10:48 |
ger.wat
Harmless
Posts: 2
Registered: 25-1-2018
Member Is Offline
Mood: No Mood
|
|
Fine, Titanium dissolved in Chlorine then. Nevertheless it forms HCl when it reacts with water.
I am familiar with airflowdirection.com. Our works similar, more of a Cadillac version.
Thanks for the ideas, I can make this work.
|
|
|
Bert
Super Administrator
Posts: 2821
Registered: 12-3-2004
Member Is Offline
Mood: " I think we are all going to die. I think that love is an illusion. We are flawed, my darling".
|
|
Hydrochloric acid AND Titanium dioxide are formed, the wonderful stuff that helps makes your white paint opaque.
Between the acid condensing droplets of water and the very fine solid TiO2, it makes a wonderfully opaque fog for the weight required. As I recall, it
even screws up infrared imaging to some extent. Need to check my references from Pyrotechnics on smoke again, most of my uses require REDUCING smoke,
not enhancing.
Rapopart’s Rules for critical commentary:
1. Attempt to re-express your target’s position so clearly, vividly and fairly that your target says: “Thanks, I wish I’d thought of putting it
that way.”
2. List any points of agreement (especially if they are not matters of general or widespread agreement).
3. Mention anything you have learned from your target.
4. Only then are you permitted to say so much as a word of rebuttal or criticism.
Anatol Rapoport was a Russian-born American mathematical psychologist (1911-2007).
|
|
|
![[*]](images/xpblue/default_icon.gif){kind=icon}
