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Q: Boiling Point and Freezing Point of Puro ( Answered 5 out of 5 stars,   0 Comments )
Question  
Subject: Boiling Point and Freezing Point of Puro
Category: Science > Chemistry
Asked by: alakon-ga
List Price: $2.50
Posted: 16 Sep 2002 17:06 PDT
Expires: 16 Oct 2002 17:06 PDT
Question ID: 65764
What is the freezing and boiling point of Puron, the replacement of Freon?
Answer  
Subject: Re: Boiling Point and Freezing Point of Puro
Answered By: clouseau-ga on 16 Sep 2002 18:18 PDT
Rated:5 out of 5 stars
 
Hello alakon,

And thanks for your question.

Puron is one brand name for R-410A where Freon is a brand name for
R-22.

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:-48.5C (-55.4F)
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
http://216.239.53.100/search?q=cache:q_4lhfBM6o8C:www.daikin.co.jp/chm/en/topics/event/semicon/pdf/etchant.pdf+hfc-32+%2B%22freezing+point%22&hl=en&ie=UTF-8
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.

Regards,

-=clouseau-ga=-
alakon-ga rated this answer:5 out of 5 stars

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