Refrigerant code

R290

R600

R600a

R32

R143a

R152a

Molecular formula

C₃H₈

C₄H₁₀

C₄H₁₀

CH₂F₂

CH₂FCHF₂

CH₂FCH₂F

R134a

13.87

10.12

10.8

8.11

8.82

15.13

R125

10.53

9.50

9.60

4.32

5.21

7.15

R227ea

7.86

7.53

7.59

3.37

4.23

5.67