Liquefaction temperatures of gases.

[J_J]

I found this and thought some of you, and me might be interested at what temp, gases became liquid. Related to welded gas.


Liquefaction temperatures of gases and used types of parent materials
Gas Liquefaction Type of parent material used
temperature (ｺC)
Ammonia -33.4 Carbon steel
Propane (LPG) -42.1 - 45.5 Fine grain Al-killed steel
Propylene -47.7 2.25% Ni steel
Carbon disulphide -50.2
Hydrogene sulphide -59.5 3.5% Ni steel
Carbon dioxide -78.5
Acetylene -84
Ethane -88.4
Ethylene (LEG) -103.8 5-9% Ni steel
Krypton -151
Methane (LNG) -163
Oxygen -182.9
Argon -185.9
Fluorine -188.1
Nitrogen -195.8 Austenitic stainless steel
Neon -246.1
Heavy Hydrogen -249.6 Al alloys
Hydrogen -252.8
Helium -268.9
Absloute zero -273.18

 

[Egon]

Maybe mention the pressure too as that do affect the situation.:thumbsup:

 

[J_J]

I don't have a pressure chart for the gas. Do you know of one? Some of these gases are stored at very high pressure.

 

[SpringHollow]

That would be at one atmosphere of pressure - those are the boiling points of the gases.

Ken

 

[SPYDERLK]

gases dont boil

 

[SpringHollow]

i was referring to their natural state at room temperature when calling them gases.

 

[Willl]

Liquefaction temperatures

Also known as 'Saturation temperature'.

 

[Egon]

http://http://www.chemguide.co.uk/physical/phaseeqia/phasediags.html

This is what I was thinking about J_J.

 

[DaveOmak]

J J, Very interesting stuff. It was even more interesting a few years back during my chromatographic years.

Somehow, now, seat time in the Jubilee has made those numbers somewhat less relevent, to me at least in this period of my life.

Hopefully there is someone out there who is using those numbers.

Now my big stuff is calculating herbicide concentration, tractor speed, pounds/acre application rate, nozzle size, pump pressure etc.

No demeaning intended. A little jesting in fun.
Using ones brain keeps us young. Sort of.

Dave

 

[smstonypoint]

My apologies for thread drift, but Nova (PBS) had a fascinating episode (or maybe it was two) on the search for "cold" and the attempts to liquefy the various gasses. I don't recall the numbers, but the energy that would be required to obtain absolute zero was mind-boggling.


Steve