Properties

R-410A

R-427A

R-407A

R-407C

R-134a

R-404A

R-507A

R-22

R-408A

R-409A

R-123

Average Molecular Weight (g/mol)

72.6

90.4

90.1

86.2

102.0

97.6

98.9

86.5

87.0

97.4

152.9

Normal Boiling Point (NBP) (°F)

-60.6

-45.3

-49.0

-46.5

-14.9

-51.2

-52.1

-41.5

-48.2

-30.0

82.1

Latent Heat of Vaporization at NBP (BTU/lb)

117.4

101.8

101.3

107.2

93.4

86.4

84.7

100.6

97.1

95.7

73.2

Critical Temp (°F)

160.4

185.6

180.1

186.9

213.9

161.7

159.1

205.1

181.7

228.7

362.6

Critical Pressure (psia)

711.0

637.0

654.9

671.4

588.8

540.8

537.4

723.7

622.9

681.5

531.1

Density of Saturated Vapor @ NBP (lb/ft³)

0.26

0.30

0.30

0.29

0.33

0.34

0.35

0.29

0.30

0.31

0.40

Density of Saturated Liquid at 77°F (lb/ft³)

66.1

70.5

71.5

71.0

75.3

65.2

65.4

74.3

66.1

75.8

91.4

Specific Heat of Saturated Vapor at NBP
(BTU/lb °R)

0.19

0.19

0.18

0.19

0.19

0.19

0.19

0.14

0.17

0.16

0.17

Specific Heat of Saturated Liquid at 77°F
(BTU/lb °R)

0.41

0.36

0.36

0.37

0.34

0.37

0.37

0.30

0.35

0.29

0.24

Ozone Depletion Potential (ODP) (CFC-11 = 1.0)

0

0

0

0

0

0

0

0.055

0.026

0.05

0.02

Global Warming Potential (GWP)

2,088

2,138

2,107

1,774

1,430

3,922

3,985

1,810

3,152

1,585

77

ASHRAE Safety Group Classification

A1

A1

A1

A1

A1

A1

A1

A1

A1

A1

B1

Occupational Exposure Limits (8 hr time/wt. Avg.) (ppm)

1,000

1,000

1,000

1,000

1,000

1,000

1,000

1,000

1,000

1,000

50