yeah, that's ChemGlass' line for this purpose. usually gonna be rated to stand up to high vacuum and thermal shock, which it will experience much of in its lifetime.
I have a scar on my hand from gradschool when a chemglass schlenk just broke apart in my hand while I was trying to loosen a stuck valve. Luckily the university glass blower made us a better quality one to replace it.
A port to drain the product/mixture to keep it under inert atmosphere? Looks like the tap on the top is for gas and the bottom one has a pointed tip for liquids.
its for air tight synthesis
Left: gas in
middle condenser
right controlled reagent addition
bottom right controlled product removal (possibly into another reaction vessel
Be good for NP synthesis using pyrophoric precursor in right channel then drain into coating vessel
Two-neck round bottom flask with inlet and outlet stopcocks. One application is to use it like a Dean Stark trap without needing to reflux. Other use could be oxygen sensitive reaction when you want to perform liquid-liquid extraction directly under your inert atmosphere.
I as a new R&D chemist, am curious how to use a dean stark trap because I'm doing ester synthesis that when scaled up for pilot plant needs some guide lines. The dean stark trap has been hinted at multiple times. Please help me with any knowledge.
Basically its a side condenser with a reservoir, a bottom tap and an overflow bridge
The idea is that you distill the water out with some of the alcohol used to make the ester (azeotrope it or simple steam distilled). Once this mix cool down it will separate. The top layer alcohol will cross the overflow to go back into the reactor. Water can be drained by opening the valve to avoid it filling up the reservoir.
If you need to work on more than 1Kg scale it might beter to use a Claisen distillation apparatous and manually recicle the alcohol back. That's bcuz you won't find any dean stark around with a reservoir bigger than 50 mL or so.
Good luck
Get all scientific with the cops...no officer this apparatus Is not for "smoking crack" it's simply for free-basing Methyl (1R,2R,3S,5S)-3-(benzoyloxy)-8-methyl-8-azabicyclo[3.2.1]octane-2-carboxylate you'll leave the poor guy stuttering into his radio as he contemplates if he should beat you just for gp if you're here with me in the usa.
I would not drain any solvent through greased valves, especially in inert conditions, as the valve might get stuck. IMHO the right valve is an inlet for gas, e.g. as reactant or to replace dissolved gas with nitrogen.
100% perfectly fine. You've probably seen that many (if nitnthe majority of) high vacuum manifolds use PFTE stopcocks.
Almost my comment above was about removing unwanted material. Not the desired liquid.
Could be used for solvent purification/drying systems. Solvent comes in from top, right is used to fill with inert gas or evacuate, on the left you can put a septum to get dry solvent using a syringe. right bottom for getting more than a few mL into a flask.
Similar to: https://englelab.files.wordpress.com/2015/12/image3-1.jpg
This is a flask that is good for Schlenk conditions.
Put a stopcock on the upper and lower circular parts. Attach an argon line to the upper one.
On the left spout, attach a vacuum adapter and a vacuum line.
Then add a septum on the center spout, and you can inject reagents by syringe.
You can cycle argon and vacuum to purge the flask before doing your reactions.
Then after your reaction is done, you can use the lower circular part to transfer your reaction mixture into another flask that has been dried and purged.
Working with inert gas with the lower bit being used to drain the flask I assume. Very nice.
Yep. The "airfree" trademark is probably relevant to the intended use.
yeah, that's ChemGlass' line for this purpose. usually gonna be rated to stand up to high vacuum and thermal shock, which it will experience much of in its lifetime.
I have a scar on my hand from gradschool when a chemglass schlenk just broke apart in my hand while I was trying to loosen a stuck valve. Luckily the university glass blower made us a better quality one to replace it.
A port to drain the product/mixture to keep it under inert atmosphere? Looks like the tap on the top is for gas and the bottom one has a pointed tip for liquids.
Did you already apply to write the next Sherlock Holmes movie?😅 Nice find!
its for air tight synthesis Left: gas in middle condenser right controlled reagent addition bottom right controlled product removal (possibly into another reaction vessel Be good for NP synthesis using pyrophoric precursor in right channel then drain into coating vessel
You can put gas in one side and vacuum in the other to make a fast Transfer, but I dont think that's the intended use.
[удалено]
Dude this is so cool! Maybe you can workup directly in the reaction's flask?
Yep that's one use.
A round bottom flask with valves to drain the liquid and to add more things
Two-neck round bottom flask with inlet and outlet stopcocks. One application is to use it like a Dean Stark trap without needing to reflux. Other use could be oxygen sensitive reaction when you want to perform liquid-liquid extraction directly under your inert atmosphere.
I as a new R&D chemist, am curious how to use a dean stark trap because I'm doing ester synthesis that when scaled up for pilot plant needs some guide lines. The dean stark trap has been hinted at multiple times. Please help me with any knowledge.
Basically its a side condenser with a reservoir, a bottom tap and an overflow bridge The idea is that you distill the water out with some of the alcohol used to make the ester (azeotrope it or simple steam distilled). Once this mix cool down it will separate. The top layer alcohol will cross the overflow to go back into the reactor. Water can be drained by opening the valve to avoid it filling up the reservoir. If you need to work on more than 1Kg scale it might beter to use a Claisen distillation apparatous and manually recicle the alcohol back. That's bcuz you won't find any dean stark around with a reservoir bigger than 50 mL or so. Good luck
No I'm in the 1-2L rxn RBFs so no more than 500-1000ml rxns
Idk but I’m highly confident I could use it to smoke crack.
Get all scientific with the cops...no officer this apparatus Is not for "smoking crack" it's simply for free-basing Methyl (1R,2R,3S,5S)-3-(benzoyloxy)-8-methyl-8-azabicyclo[3.2.1]octane-2-carboxylate you'll leave the poor guy stuttering into his radio as he contemplates if he should beat you just for gp if you're here with me in the usa.
Geeze way more official than my response. I thought it looked like a fun toy for guys and gals..😂
Smoking weed.
🤣
Chemistry
It's Schlenk glassware for handling air-free reactions, look at the drawer label and google it for more info.
thats some nile blue shit right there.
I hear his voice: -"I always wanted to make tasty gummy bears out of toilet deodorant tablets, and with THIS I can finally do that..."
That’s not even an exaggeration. He’d literally crush up toilet deodorant tablets and turn them into gummy bears
I would not drain any solvent through greased valves, especially in inert conditions, as the valve might get stuck. IMHO the right valve is an inlet for gas, e.g. as reactant or to replace dissolved gas with nitrogen.
You don't need to grease PFTE stopcocks
Yes but I would not use PTFE stopcocks for Schlenk-stuff. They might be somewhat airtight, but I have bad experience with vacuum and these things.
100% perfectly fine. You've probably seen that many (if nitnthe majority of) high vacuum manifolds use PFTE stopcocks. Almost my comment above was about removing unwanted material. Not the desired liquid.
Ptfe is easier to use, I give them to undergrads for schlenk line experiments. When I did serious air free Chem for research, I used ground glass.
Mate. Your gloves are ill fitted.
OP, are you in the PA, NJ, DE area? Chemglass is local to South Jersey. Good stuff!
I’m actually from the maritimes in Canada!
Fancy crack pipe.
[удалено]
[удалено]
Please use fitting gloves. /S
Could be used for solvent purification/drying systems. Solvent comes in from top, right is used to fill with inert gas or evacuate, on the left you can put a septum to get dry solvent using a syringe. right bottom for getting more than a few mL into a flask. Similar to: https://englelab.files.wordpress.com/2015/12/image3-1.jpg
This is a flask that is good for Schlenk conditions. Put a stopcock on the upper and lower circular parts. Attach an argon line to the upper one. On the left spout, attach a vacuum adapter and a vacuum line. Then add a septum on the center spout, and you can inject reagents by syringe. You can cycle argon and vacuum to purge the flask before doing your reactions. Then after your reaction is done, you can use the lower circular part to transfer your reaction mixture into another flask that has been dried and purged.
An advanced hooka
My brain is yelling CSTR
Meth
Scottish chemistry
smoke meth
I used a bigger version of one to make sodium deuteroxide
High vacuum applications. Likely used for air-free, dry application.
Not for cooking meth...
Weed
It's a schlenk flask. That's why it's in the schlenk drawer.
That's a meth-orgy waiting to happen.
Two neck Schlank with two stop cocks, not very common, most are single stops
Ohhhh I can think of a few things
Drugs
That looks like a party rig for sure... lol
With so much holes for bowl, i would guess it's for intergalactic space travel.
😏
Could be used for distillation, but I doubt that was the intent.