And thanks for your question.
Puron is one brand name for R-410A where Freon is a brand name for
With this knowledge, I searched r-410a +"boiling point"
Take Comfort at http://www.takecomfort.com/Air_Conditioning.html says:
"Puron is the brand name for refrigerant R-410A, developed by Allied
Signal as a replacement for freon (R22). Puron offers the same high
efficiency as freon, yet it will also deliver cost savings."
They show that Puron boils at -30.4 degrees F
I could find no information on the freezing point of Puron, however
Genetron ( appserv-a.alliedsignal.com/prodcat/
Pdfs/FLO/MSDS/gtrnaz20.pdf ) is another brand name for R410-A and it
is specified as follows:
BOILING POINT:-48.5°C (-55.4°F)
FREEZING POINT:Not Determined
At a page from ASHRAE (American Society of Heating, Refrigerating and
Air-Conditioning Engineers) www.ashrae.org/BOOK/F01sCh19.pdf , you
will find a document on refrigerant which lists the freezing points of
many refrigerants. R-410A does not have a freezing point listed.
It appears that there is no documented freezing point for R-410A.
I then found a report on Environmentally Safe Refrigerant Service
Techniques at http://www.epatest.com/609MAN.pdf , where I learned that
R-410A is actually composed of equal parts of HFC-32 and HFC-125.
Searching for the freezing point of HFC-32, I found
where the freezing point of HFC-32 is listed as -136.0 C
Searching for the freezing point of HFC-125, I found a table at Kidde
Aerospace, http://www.walterkidde.com/table_1.htm , which lists the
freezing point of HFC-125 as -103 C
I was unable to ascertain what the freezing point would be for a 50/50
mixture of HFC-32 and HFC-125.
I trust this information will answer your question.