spirocycle - 28-11-2010 at 14:42
I have been causally searching for the identity of these pieces of glass for some time now, with no luck
does anybody have any idea what these pieces are called? or what they are used for?
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The last item is about 2L in size, and looks like a giant separatory funnel, except there is no stopcock on the bottom, just another one of those odd
ring/gasket joints
edit: OK all set
[Edited on 28-11-2010 by spirocycle]
[Edited on 28-11-2010 by spirocycle]
Picric-A - 28-11-2010 at 14:59
The second to last looks like a solvent still for drying, purifying and storage of solvents.
DJF90 - 28-11-2010 at 15:46
The first item is a perkin triangle, used for collecting fractions of distillate under vacuum, without disrupting the distillation. Its missing its
ground glass taps.
The fifth item is indeed a solvent stillhead, although it again is missing a tap.
spirocycle - 28-11-2010 at 15:51
how does that 5th item work
I've been mulling it over
the cold finger is obvious.
that side hole is a thermometer adapter?
I've figured that I could use it for steam distillation by manipulating the taps to let an aqueous layer flow back into the boiling flask and an
organic layer into a collection flask
panziandi - 28-11-2010 at 17:23
The side neck is for a rubber septa. Attach the item to a round bottom flask with your solvent and a drying agent (THF and Na for example) connect a
gas source to the vent at the top and purge with inert gas (dry argon) with the tap that vents the distillate out close and the tap to return
distillate to the solvent still pot open, proceed to reflux your solvent (with water in the cold finger) then when it's had sufficient time, close
that tap and collect dry solvent in the trap. You can take solvent off via syringe through the septa, or tap it off via the tap at the bottom. If you
close off the system and seal off the inert as line at the schlenk, you can store the dry solvent for some time under argon.
The item above the trap, is a probably some sort of vacuum drying item, where a sample in a flask is attached to the cone end, evacuated, and heated
under vacuum with a drying agent in the far end possibly? The hooks by the cone are for attaching springs to to keep a flask attached, I have seen
images of something similar before.
[Edited on 29-11-2010 by panziandi]
spirocycle - 28-11-2010 at 20:37
what would this device be called?
also, the bore connecting to the bulb end is so so thin that it is nearly impossible to clean it out.
It seems unlikely that a drying agent belongs there.
not to mention the crud thats stuck in there is water insoluble
VestriDeus - 29-11-2010 at 18:07
The last one's called a bong 
psychokinetic - 29-11-2010 at 18:20
Well, you see, after much expert analysis, I'd say
It's a thingy.
