How to Use the Hot air gun for Drying Moisture sensitive reactions OFFICIAL

[@phonixsolomon6275]

what about the moisture that can be on the black pipes or in the rest of the system?

[@chemfunman]

use the vacuum to suck it out - need a strong pump

[@chemistrywithdryousafzai487]

thank you

[@chemfunman]

thank you! you are welcome - come back to this channel for more! like and subscribe :D

[@user-ko7lz3kr1d]

I always wondered about letting nitrogen flow into the flask like that, I thought that maybe it would be over pressurized and pop joints if you don't have a vent needle, but in this video I can see that once the flask and line is full of gas the rest just flows through the manifold and into the bubbler. I assume the flask is under a higher pressure than atmosphere, but is there any risk of blowing joints? We don't really use the Schlenk techniques in my lab but I want to know for when I eventually go to another lab (or need to use them in the future here).

[@chemfunman]

The glass , not withstanding cracks, won’t pose safety concerns.

[@user-mp4bc9qp2x]

thats what the bubbler is for. gas is always just flowing it cant overpressure because its an open system. the only pressure is from the oil which is easily overcome.

[@user-ko7lz3kr1d]

@@user-mp4bc9qp2x That makes sense. I am curious what is the purpose of using a ventilation needle when transferring liquids from a bottle with a septum if that's the case. I suppose the needle is small enough to where something might pop out and you don't want to take any chances when handling something like tBuLi.

[@user-mp4bc9qp2x]

@@user-ko7lz3kr1d i'm not sure what you mean. i dont use a vent needle when taking reagents from a bottle through the sure seal. it's just the nitrogen line with positive pressure. then you can remove solution via syringe. you use a vent needle when purging without vacuum so that the air can leave and be replaced with nitrogen

[@user-ko7lz3kr1d]

@@user-mp4bc9qp2x I've just seen quite a few demos online where someone will be handling a pyrophoric liquid and they'll use a vent needle for positive flow. We just use balloons in my lab anyways so I've never had any hands-on experience with Schlenk techniques.

[@z-boxwriter5004]

What is the purpose of the tee connection near to the oil bubbler?

[@chemfunman]

three-way joint: air, nitrogen, oil