I see this thread is current, so I am hoping someone would help clarify something. I have done searching on here and the web and various organic
literature, including Vogel and Zubrick.
Here is my question. And basically a yes or no answer will give me the answer I need to move forward.
When I hook up and prepare for vacuum distillation, do I seal the system completely up(which seems so wrong). or do I have a slight bit of air (or gas
if needed) controlled by something like the hoffman clamp on a hose or valve shut off on one of the glass joints of the flask ? I feel it needs to let
a tiny bit of either air or gas in, as vacuum is being applied to it.
Here is some pics of the lab, since I think this is my first post. I have used this site for a lot of answers I was looking for. I hope to be able to
repay by providing relative info to help others out.
I have a corning hot plate and stirrer, I have a single stage pump, as well as an aspirator, high vacuum joint grease and a Meriam Instrument digital
manometer. I also have a Hoffman style hose clamp if I need it to regulate the input of outside air or a gas. I have had first semester Organic, but
know quite a bit more than that from my own reading and experimenting.
Vacuum distillation is about the only practice I am not knowledgeable in at my current level of experience. I really want to to get comfortable and
experienced with it.
We NEVER did a vacuum distillation in my lab. I even asked my prof about vacuum distillation and they really couldnt answer my question.
And any additional info or tips would be greatly appreciated.
And if someone could identify the glass apparatus I am holding? I have no idea what it is and what it might be used for. I was told it was a custom
piece when I bought it.
Thanks.
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