ASHRAE Number: R-454B Refrigerant Class: A2L Type: Zeotropic blend Typical Lubricant: Polyolester (POE) Replaces: R-410A Chemical Formula: R-1234yf / R-32 (31.1% / 69.9%) Lower Flammability Limit (LFL): 0.303 kg/m Description: Solstice 454B is a low global warming potential (GWP) refrigerant designed as a replacement for R-410A in residential and commercial air conditioning systems. This zeotropic blend combines R-1234yf and R-32, making it an environmentally friendly alternative that complies with current regulations while providing efficient cooling performance.