# Heat Capacity Ratio of Common Fluids

## Ratio of specific heats table

Fluid Heat Capacity Ratio
Acetone 1.11
Acetylene 1.24
Air 1.4
Alcohol (ethanol) 1.13
Alcohol (methanol) 1.26
Ammonia 1.31
Argon 1.66
Benzene 1.12
Blast furnace gas 1.41
Bromine 1.28
Butane 1.094
Carbon dioxide 1.31
Carbon Disulphide 1.21
Carbon monoxide 1.4
Chlorine 1.33
Chlorine 1.34
Chloroform 1.15
Ethane 1.19
Ether (diethyl ether) 1.03
Ethyle Alcohol 1.13
Ethyle Chloride 1.19
Ethylene 1.24
Helium 1.66
Hexane 1.06
Hydrogen 1.405
Hydrogen chloride 1.41
Hydrogen sulphide 1.32
Hydrogene 1.41
Hydroxyl 1.384
Iso-butane 1.19
Iso-octane 1.05
Iso-pentane 1.08
Krypton 1.68
Mercury 1.67
Methane 1.32
Methyl Alcohol 1.2
Methyl butane 1.08
Methyl Chloride 1.2
Natural Gas 1.27
Natural Gas (Methane) 1.32
N-butane 1.18
Neon 1.667
N-heptane 1.05
Nitric oxide 1.4
Nitrogen 1.47
Nitrogen tetroxide 1.02
Nitrous oxide 1.31
Oxygen 1.45
Pentane 1.07
Propane 1.13
Propylene 1.15
R-11 1.14
R-114 1.09
R-12 1.14
R-123 1.1
R-134a 1.2
R-22 1.18
Steam (water) 1.33
Sulphur dioxide 1.26
Toulene 1.09
Water vapor 1.33
Xeon 1.66
Fluid Heat Capacity Ratio

## How the Heat Capacity Ratio of Common Fluids Table works?

This table presents the absolute viscosity of some common fluids and his evolution against the temperature.

#### Heat capacity ratio formula

Ratio of the heat capacity at constant pressure (CP) to heat capacity at constant volume (CV). It is sometimes also known as the isentropic expansion factor and is denoted by γ (gamma) for an ideal gas or κ (kappa), the isentropic exponent for a real gas.