Propylene Glycol origins?

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crxess

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Eventually, as water reaches its boiling point of 100° Celsius (212° Fahrenheit), the heat is able to break the hydrogen bonds between the water molecules, and the kinetic energy (motion) between the water molecules allows them to escape from the liquid as a gas.
Water’s Heat of Vaporization

Propylene glycol boils into a vapor at 188.2 degrees Celsius (370 degrees Fahrenheit) at atmospheric pressure. It will also vaporize in a vacuum pressure of 0.129mm Hg at 77 degrees Fahrenheit (25 degrees Celsius)
At what temperature does propylene glycol turn into a vapor? | Answerbag

Glycerin Specs here:
At what temperature does propylene glycol turn into a vapor? | Answerbag
290C - 554F

All temps are Stand alone
All liquids are readily mixable and attract each other
Any pair will combine
Any combination will effect Boiling point - Vaporization

VG has a much lower Flash point than boiling point:
175c - 349F open container

Your point?

Combined 50/50 pg/vg Vaporization temperatures would be near/at those used by many Sub-ohm vapors.(Not just Cloud chasers)

Due to Design of semi-closed heating chambers higher temps are reached faster and lower vaporization temps may be reached through chamber pressurization, even in more standardized clearomizers.


Again, seriously I don't care as long as I can Vape rather than smoke.
.....in' = awesome
.....in' = Complaining

Definitions do change to fit the times whether one agrees or not.
I Vape;)
 
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skoony

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Water’s Heat of Vaporization


At what temperature does propylene glycol turn into a vapor? | Answerbag

Glycerin Specs here:
At what temperature does propylene glycol turn into a vapor? | Answerbag
290C - 554F

All temps are Stand alone
All liquids are readily mixable and attract each other
Any pair will combine
Any combination will effect Boiling point - Vaporization

VG has a much lower Flash point than boiling point:
175c - 349F open container

Your point?

Combined 50/50 pg/vg Vaporization temperatures would be near/at those used by many Sub-ohm vapors.(Not just Cloud chasers)

Due to Design of semi-closed heating chambers higher temps are reached faster and lower vaporization temps may be reached through chamber pressurization, even in more standardized clearomizers.


Again, seriously I don't care as long as I can Vape rather than smoke.
.....in' = awesome
.....in' = Complaining

Definitions do change to fit the times whether one agrees or not.
I Vape;)
nice try.
your referring to industrial processes.
now explain to all us good people what happens when
we press the buttons on our PV's.
there isn't any pressurization nor any thing
approaching any controlled industrial process going on.
when you press the button it has to work. why?
remember water starts evaporating due to heat at 180F
at sea level.
like i said nice try.
regards
mike
 

crxess

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This thread is Proof some folks will argue with a fence post.

You are absolutely correct

its also proof some people will try to whittle the fence post
into Venus de Milo even though its just a fence post.
regards
mike

Wiki vs. considered accepted standards = laboratory controlled information - okay

I'm putting my knife away
 

englishmick

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I was hoping someone could shed some light on the effect of the deuterium level in the water. That's what we call heavy water. It sinks to the bottom of the tank and tempers the neutron flux in the boundary layer at the coil surface. I think this might be what causes the VG to vaporize at temperatures lower than the nominal boiling temperature, rather than the water itself. I might be wrong though, I'm not a real scientist.
 

skoony

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At this point there is no way I am going to attempt to explain vapor to condensate phase change dynamics. You are on your own.
you mean evaporation not vaporization.
It has a specific gravity of 1.036, meaning that it is only slightly more dense than water. Its vapor pressure at normal room temperature is negligible, so propylene glycol does not evaporate to any significant degree.


propylene glycol is hygroscopic, meaning that it can pull water out of the air and dissolve the water. As a result, a sample of propylene glycol left open to the air will gain volume over time as it gains water.
regards
mike
 
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