Instructables

"Home Made" Liquid Nitrogen, for next to nothing!

Picture of "Home Made" Liquid Nitrogen, for next to nothing!
Or, poor man's liquid nitrogen. I'm in college, but unfortunately no chem classes, nor do I have the money for a Dewar's of my own to have filled. I heard of this technique from a friend of a teacher's son's maid..or something, it was a while ago.

Full credit for this idea belongs to wbeaty over ar Youtube,
http://www.youtube.com/watch?v=d11TFkeqbwY
I'm just the instrustables messenger;)

Step 3: Prepare inside container!

Cut some small holes in the bottom of the inside container. This will allow the alcohol to get chilled by the dry ice while keeping the cry ice away from your test subjects. Accuracy is not an issue, just make it smaller than your smallest chunk of dry ice.

Step 4: Pack it in.

Put some dry ice in the bottom of the container, add the inner bottle, and fill it in around the sides. I tried to just fill it, and work the bottle in, but it DOES not work for anything. Crushing the dry ice yields more uniform results, at the cost of faster sublimation. (turning into useless vapor)

Step 5: Add the Alcohol.

Pour alcohol into both sections of the container, the levels should even out eventually. Odds are you won't be able to see very well where the alcohol is, and spill a little. This is good. It lets you know the container is full.
 
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CaitlinW12 months ago

if you made dippin' dots would it be safe to eat them?

This is a lot like wbeaty's demo on "Poor man's "Liquid Nitrogen" Youtube http://www.youtube.com/watch?v=d11TFkeqbwY. He even describes that it will stick to you like napalm in his description. If you were inspired to make an Instructable because you saw hid demo, you really should give some credit to where you got the idea from.
rerat (author)  brightest_cyan6 years ago
The napalm comment however I derived myself after having stuck my finger in the mix. Haha.
Why?!? doesn't that burn?
did it burn ur finger???
I also put a bit on my fingertip when I made napalm, this was to feel the viscosity of it I presume that the author as I, did this before testing the burn characteristics of napalm.
He said up top he got it from that youtube video, and he put the guy who made it too. i admit it's not obvious, but it's there. (plus it's fun shattering things with it.)
rerat (author)  brightest_cyan6 years ago
Holy..you're right, I was absolutely no recollection of where I knew about this from! Adding credit now, sorry wbeaty!
how long does the alcohol stay at freezing temperatures?
junits154 years ago
not liquid nitrogen, just cold alcohol
walfers15 years ago
how do i make a holding tank fo liquid nitrogen
bowmaster5 years ago
Are the two pictures of frozen weed?
rerat (author)  bowmaster5 years ago
Haha, it's a maple leaf little buddy.
bowmaster rerat5 years ago
Oh!!! Now I see it!!
would this shatter a rubber ball?
rerat (author)  Fridge Gnome5 years ago
I would assume so, if you let it freeze long enough!
Well, only one way to find out!
rimar20006 years ago
Awesome! Thanks.
rerat (author)  rimar20006 years ago
No problem! make sure you check out wbeaty's video! It is such a fun thing to see something like a flower, shatter like glass.