R-1234yf or HFO-1234yf is a hydrofluoroolefin (HFO) refrigerant that replaces R-134a in automotive air conditioning systems. It has a near-zero ozone depletion potential (ODP) and a much lower global warming potential (GWP) than R-134a, making it more environmentally friendly.

Features and Benefits
Very Low GWP: R-1234yf’s GWP is approximately 4-7, while R-134a’s is approximately 1,430, meeting increasingly stringent environmental regulations in many countries.
Environmentally Friendly: No ozone depletion (ODP = 0).
Efficiency similar to R-134a: Can be used in air conditioning systems designed for R-134a with minimal modifications.
Safety: R-1234yf is mildly flammable and classified as an A2L safety standard.

Applications
Currently, R-1234yf is used as a standard refrigerant in new automobiles manufactured in the United States and Europe to comply with environmental regulations, particularly the European Union’s Mobile Air Conditioning Directive (MAC Directive).

Chemical Formula
The refrigerant R-1234yf has the chemical formula C3H2F4 and is chemically named 2,3,3,3-tetrafluoropropene (2,3,3,3-tetrafluoropropene).