What is the most cost-effective method for determining crystallization pressure?

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Discussion Overview

The discussion revolves around identifying cost-effective experimental methods for determining the crystallization pressure of an unknown fluid. The focus is on practical setups that utilize off-the-shelf components while minimizing expenses.

Discussion Character

  • Exploratory, Experimental/applied, Debate/contested

Main Points Raised

  • One participant suggests looking for a cheap experimental setup as described in a referenced paper, but notes that the paper focuses on measuring pressure exerted by freezing ice, which may not be applicable to the unknown fluid in question.
  • Another participant clarifies the goal is to find the pressure at which the unknown liquid freezes, confirming the initial inquiry.
  • A different participant proposes the use of an anvil cell as a potentially inexpensive method for determining crystallization pressure.

Areas of Agreement / Disagreement

Participants generally agree on the need for a cost-effective method, but there are competing views regarding the suitability of different experimental setups, particularly concerning the specific requirements of the unknown fluid.

Contextual Notes

There are limitations regarding the unknown properties of the fluid, such as its melting point and behavior, which may affect the adequacy of proposed methods.

kubedgamer
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Given an unknown fluid, what would be an efficient and/or cheap way of finding it's crystallization pressure through experiment.

I would like to keep costs at a minimum and work from off the shelf components if possible.
 
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Hi kubedgamer,

A seemingly cheap setup is described here:
http://www.igsoc.org/journal.old/10/59/igs_journal_vol10_issue059_pg312-315.pdf

When you say unknown liquid, it could mean that a given setup will be easily inadequate by the virtue of the liquids unknown melting point and overall behavior.
 
Last edited by a moderator:
Lok said:
Hi kubedgamer,

A seemingly cheap setup is described here:
http://www.igsoc.org/journal.old/10/59/igs_journal_vol10_issue059_pg312-315.pdf

When you say unknown liquid, it could mean that a given setup will be easily inadequate by the virtue of the liquids unknown melting point and overall behavior.

Hi Lok,

Thanks for your reply.

I saw that paper earlier, unfortunately they're focusing on finding the pressure exerted by freezing ice against an obstacle.

"Polycrystalline ice, growing from the melt, can exert a pressure against an extended obstacle,
even though it is free to grow in other directions. Pressures of over 0.2 bar (20kl m-z) have been measured
with simple apparatus. This phenomenon may be important in explaining the frost-shattering of rocks"

Unfortunately, not what I'm after :(
 
Last edited by a moderator:
So you would like to find... the pressure at which the unknown liquid freezes?
 
Lok said:
So you would like to find... the pressure at which the unknown liquid freezes?

That's correct :)
 
In this case I cannot imagine something cheaper than the obvious anvil cell.
 

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