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R507A Refrigerant Gas WESTRON

Chemical Name 1,1,1-Trifluoroethane (R143a)

Pentafluoroethane (R125)

Chemical Formula CH3CF3 & CHF2CF3
Appearance Colorless liquefied gas
Odor Faint, ether-like odor
Average Molecular Weight (g/mol) 98.9
Normal Boiling Point (NBP) (°F) -52.1
Latent Heat of Vaporization @ NBP (BTU/lbs.) 84.7
Critical Temperature (°F) 159.1
Critical Pressure (psia) 537.4
Density of Saturated Vapor @ NBP (lb/ft³) 0.35
Density of Saturated Liquid @ 77 °F (lb/ft³) 65.4
Specific Heat of Saturated Vapor @ NPB (BTU/lb °F) 0.19
Specific Heat of Saturated Liquid @ 77 °F (BTU/lb °F) 0.37
Ozone Depletion Potential (ODP) (CFC 11 = 1.0) 0
Global Warming Potential (GWP) 3,985
Occupational Exposure Limits (8 hr. time/wt. Avg.) (ppm) 1,000

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R507 is blended to match the properties of R502, making it a good refrigerant for some medium and most low-temperature Refrigeration applications; food display, storage cases, Cold storage rooms


Westron® R 507A is a non-ozone depleting, azeotropic blend of HFC refrigerants R-125 and R-143a.


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R507A Refrigerant Gas WESTRON

R507A Refrigerant Gas WESTRON