[CrazyGoat]

I would like to know why in some cases looks as necessary for a reaction under innert atmosphere to have a constant flow of nitrogen, I mean when I look at the schlenk line I can see the bubbles going trough the oil continuously,
It wouldn't be just enough to make sure that there is only nitrogen in all the system, then turn it off and then make the reaction for the time it could take it?
Thank you.

[chenbeier]

If you can isolate the whole line, Yes, but normally you have open site for distillation or reflux and so you need be sure that no oxygen can come in. So to have a continuous nitrogen stream.

[CrazyGoat]

Thank you for your answer.
I didnt see it before becouse I tough I was going to receive a notification in the email box.
(I am new here)
Does that mean that the balloon system works??
I heard that it becomes a normal atmosphere in just some minutes.
I didn't understood this statement,
When there is not oxigen input.

So I can do a reaction under innert atmosphere, let's say in a round flask with the balloon system while the time the reaction can take and its going to be ok. Just that simple?

[OrganicDan96]

you are always going to have some sort or leak in your system the constant flow means nitrogen can escape without letting air in. some people do reactions in sealed young's flasks which have a very good seal.

[CrazyGoat]

I wanna do an innert atmosphere reaction. Is it 2.2 litter argon cilindre enough for having a constant flow over 12 hours, I don't know how long they last.
Any clue?

[phth]

Check out this step-by-step guide written and published by professionals:
https://www.chemistryviews.org/details/education/3728881/Tips_and_Tricks_for_the_Lab_Air-Sensitive_Techniques_1.html