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Europe / Middle East / Africa / India: Medical Products > Zephex Medical Propellants > Products & Services > Physical Properties

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Physical Properties of ZEPHEX®134a

Physical Property Units Data
Chemical Name - 1,1,1,2-Tetrafluoroethane
Chemical Formula - CF3CH2F
Molecular Weight - 102.03
Boiling Point at 1 atm (1.013 bar) °C
°F
-26.09
-14.9
Melting Point °C
°F
-103.0
-153.4
Critical Temperature °C
°F
101.03
213.9
Critical Pressure bara
lb/in² abs
40.56
588.3
Critical Volume m³/kg
ft³/lb
1.97 x 10-³
0.0316
Critical Density kg/m³
lb/ft³
507.6
31.65
Liquid Density at 25°C(77°F) m³/kg
ft³/lb
1206.8
75.34
Vapour Density at 25°C(77°F) kg/m³
lb/ft³
52.34
3.264
Saturated Vapour Density at nBpt m³/kg
ft³/lb
5.26
0.328
Liquid Cp at 25°C(77°F) kJ/kg.K
Btu/lb·°F
1.43
0.344
Vapour Pressure at 25°C(77°F) bara 6.653
Latent Heat of Vaporisation at nBpt kJ/kg
Btu/lb
216.7
93.2
Liquid Thermal Conductivity at 25°C(77°F) W/m·K
Btu/hr·ft°F
0.0824
0.0476
Vapour Thermal Conductivity at
25°C(77°F) and 1 atm (1.013 bar)
W/m·K
Btu/hr·ft°F
0.0144
0.00836
Liquid Viscosity at 25°C(77°F) cP 0.199
Vapour Viscosity at
25°C(77°F) and 1 atm(1.013 bar)
cP 0.013
Coeficient of thermal expansion /°C 0.002766
Solubility of 134a in Water at 20°C
(68°F) and 1 atm (1.013 bar)
%w/w 0.0773
Solubility of Water in HFA-134a at
25°C(77°F) and 1 atm(1.013 bar)
%w/w 0.11
Flammability Limits in Air at 1 atm
(1.013 bar)
%v/v none
Autoignition Temperature °C
°F
770
1418
Liquid Dielectric Constant at 20°C - 9.51
Vapour Dielectric Constant at
25°C(77°F) and 1 atm (1.013 bar)
- 1.014
Dielectric Strength (R12 = 1) - 0.5
Dipole Moment D 2.06
Thermal Coductivity at 25 °C W/mK 0.082
Surface Tension at 25 °C mN/m 8.09
Toxicity AEL (8- and 12-hr TWA) ppm(v/v) 1000
TSCA Inventory Status - Included
EINECS Inventory Status - Included

Physical Properties of ZEPHEX®227ea

Physical Property Units Data
Chemical Name - 1,1,1,2,3,3,3-Heptafluoropropane
Chemical Formula - CF3CHFCF3
Molecular Weight - 170.03
Boiling Point at 1 atm (1.013 bar) °C
°F
-16.45
2.39
Melting Point °C
°F
-131.2
-204.16
Critical Temperature °C
°F
102.79
217.02
Critical Pressure bara
lb/in² abs
29.87
433.22
Critical Volume m³/kg
ft³/lb
1.72 x 10-³
0.0276
Critical Density kg/m³
lb/ft³
581.4
36.23
Liquid Density at 25°C(77°F) kg/m³
lb/ft³
1387.4
86.46
Vapour Density at 25°C(77°F) kg/m³
lb/ft³
37.05
2.31
Saturated Vapour Density at nBpt kg/m³
lb/ft³
35.94
2.240
Liquid Cp at 25°C(77°F) kJ/kg.K
Btu/lb·°F
0.8769
0.211
Vapour Pressure at 25°C(77°F) bara 4.544
Latent Heat of Vaporisation at nBpt kJ/kg
Btu/lb
132.02
56.76
Liquid Thermal Conductivity at 25°C(77°F) W/m·K
Btu/hr·ft°F
0.054
0.031
Vapour Thermal Conductivity at
25°C(77°F) and 1 atm (1.013 bar)
W/m·K
Btu/hr·ft°F
0.011
0.006
Liquid Viscosity at 25°C(77°F) cP 0.240
Vapour Viscosity at
25°C(77°F) and 1 atm(1.013 bar)
cP 0.010
Coeficient of thermal expansion /°C Not yet available
Solubility of 227ea in Water at 20°C
(68°F) and 1 atm (1.013 bar)
%w/w 0.058
Solubility of Water in 227ea at
25°C(77°F) and 1 atm(1.013 bar)
%w/w 0.061
Flammability Limits in Air at 1 atm
(1.013 bar)
%v/v Non-Flammable
Autoignition Temperature °C
°F
>650
>1200
Liquid Dielectric Constant at 20°C - Not yet available
Vapour Dielectric Constant at
25°C(77°F) and 1 atm (1.013 bar)
- Not yet available
Dielectric Strength (R12 = 1) - Not yet available
Dipole Moment D 1.456 ± 0.002
Thermal Coductivity at 25 °C W/mK 0.054
Surface Tension at 25 °C mN/m 7.50
Toxicity AEL (8- and 12-hr TWA) ppm(v/v) 1000
TSCA Inventory Status - Included
EINECS Inventory Status - Included

Further information on the physical properties of ZEPHEX®134a and ZEPHEX®227ea can be viewed in our customer zone.


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