R-422d

R-422d is a blended hydrofluorocarbon (HFC) refrigerant comprised of R-125, R-134a, and isobutane in the following proportions: 65.1+.9,–1.1% C2HF5 · 31.5±1% C2H2F4 · 3.4+.1,–.4% C4H10