R-421A

Type: HFC

Chemical Name & Components: R-125 (58%), R-134a (42%), Pentafluoroethane, 1,1,1,2-Tetrafluoroethane

SDS/MSDS: Airgas

Pressure Temperature Chart: R-421A

Best Use: A non-ODP blend used in medium and high temperature residential, commercial, and industrial refrigeration and air conditioning applications. Currently being phased down for virgin U.S. production and consumption by the AIM Act, passed in 2020.

Key Characteristics: 0 ODP, 2385 GWP, A1

Replacement For: R-22
Common Alternatives: N/A