Oxygen Phase Diagram: Pressure & Liquefy 0-50 atm

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Discussion Overview

The discussion revolves around the liquefaction of oxygen under various pressures, specifically seeking a phase diagram that illustrates the behavior of oxygen between 0 and 50 atm. Participants are looking for resources and information related to the phase transitions of oxygen.

Discussion Character

  • Exploratory, Technical explanation, Homework-related

Main Points Raised

  • One participant expresses a need for a phase diagram showing the liquefaction pressure of oxygen at various pressures, specifically between 0 and 50 atm.
  • Another participant references the triple point of oxygen and provides a link to a phase diagram related to it.
  • A third participant suggests that instead of a full phase diagram, knowing the equilibrium vapor pressure of oxygen as a function of temperature would suffice, recommending resources such as the handbook of chemistry and physics.
  • A fourth participant advises checking fluid properties at the NIST (National Institute of Standards and Technology) for relevant data.

Areas of Agreement / Disagreement

Participants do not appear to reach a consensus on the best resource for the phase diagram, with multiple suggestions provided but no agreement on a single source or method for obtaining the desired information.

Contextual Notes

The discussion highlights the need for specific data regarding the phase behavior of oxygen, but does not resolve the best approach to obtain this information or clarify any assumptions regarding the phase diagram's applicability.

Who May Find This Useful

Individuals interested in the phase behavior of gases, particularly oxygen, as well as those studying thermodynamics or related fields in chemistry and engineering may find this discussion relevant.

pixelpuffin
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i need to know what pressure oxygen will liquefy at under various pressures but i can't find a phase diagram anywhere
any link phase diagram that shows pressures 0-50 atm would be useful
 
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i searched for triple point of oxygen
this contains a phase diag
http://magdalenawitkiewicz.pl/temple.php?q=triple-point-of-oxygen
 
Last edited by a moderator:
pixelpuffin said:
i need to know what pressure oxygen will liquefy at under various pressures but i can't find a phase diagram anywhere
any link phase diagram that shows pressures 0-50 atm would be useful
You don't need the whole phase diagram. All you need to know is the equilibrium vapor pressure of oxygen (as a function of temperature). You should be able to find this using google. If not, look in the handbook of chemistry and physics or the chemical engineers' handbook.
 
Try fluid properties at NIST.
 

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