hi man,
I would like to chat with you a bit about the alcl3
Welp. I got excited that there were 52 new posts and then I saw what that shit was about. 
As for inert gas, do you prefer Argon or Nitrogen? I have seen people vouch for both.
Also, still trying to get a good ole nudge in a better direction for quenching.
Nitrogen will still leave a small thin layer of o2 present within the atmosphere of the vessel, use argon
Edit had a typo fat fingers
You absolutely rock.
Have you guys found a way to get around buying expensive jacketed RBFs for bench top production?
Jacketed collection pot with xl sight glass
Awesome, thank you!!
Check tread reflux under pressure
I give detailed options
Argon is also more expensive.
Nitrogen may be sufficient, depending on the goal.
Cutting corners due to price isn’t what makes for good work. But I see your point, some cant justify the expense.
For alcl3 nitrogen should be enough for some quick purging
The only reason why I dry solvent is that if not the cbd starts crashing out of solution pretty fast and defenatly at lower temps
I have access to both. I would rather cut as few corners as possible and work backwards to cut some costs once I have a proof of concept. I’m definitely going to dry the solvent as much as I can. Luckily the climate I am in is on the drier side, so that can’t hurt.
It can also be seen as an overkill in certain situations.
As far as comparing the two for a inert reaction I feel safer & rather use argon myself due to the fact of the o2 that could be left causing unwanted side rxn or further oxidation than what you’d intend, making the reaction not as selective as you would want. I would always chose argon over nitrogen due to the fact it will produce a cleaner atmosphere.
Treu !
Argon is heavier than nitrogen in weight that’s why it’s better IMO for running inert rxns.
Both can and should be ran through a drying column prior going into the reactor anyways in both blanketing and sparging applications. Especially if o2 contamination is a concern.
Why not dry the gas that we using to keep things inert.
That’s at least how I run mine.
That’s exactly what i was thinking. I have read (on here somewhere) that drying too much can be a problem. I’m not sure of that is still thought to be true or not. Im going to strip my set up of every drop of moisture that i can and go from there.
I haven’t investigated the difference in this specific topic myself. I’m not telling you are wrong. I’m only questioning the necessity, if this makes such a difference in the various process we discuss here. Maybe we are dealing with 0.0001% of the final product.
This is a convenient approach.
In the other field I’m involved into, geochemistry, most anoxic research is achieved using N2.
In it good enough to remove 99.9999% O2 from the atmosphere (i.e. going from 21% down below 10 ppm). But there are indeed situations where it is not enough. I have seen more Ar used in high end material science labs. Actually I don’t know what the practices are in organic sciences.
There are also possibilities to use O2 scrubbers, in order to maximize anoxia.
Some people here have more experience than others. Moreso, some read whitepapers and respond as if they have real world experience (which I assume is to sell Chad a “consult/SoP”).
Just a reminder to do your due diligence (search function is a great place to begin!) before messaging an internet random and sending them $$$.