Tool Box

Air diffusion coefficient calculation (simplified method)

System data :

Pressure (Pa)
Temperature (K)

Product data :

Molecular weight (g/mol)
Liquid density (kg/m3)

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How to use this calculation tool

This simplified method can be used to estimate the air coefficient diffusion for a product from its molecular weight and its liquid density.
For example for toluene (molecular weight = 92.141 g/mol and liquid density = 872 kg/m3) at atmospheric pressure at 20°C, the air diffusion coefficient calculated is 0.0798 cm2/s.

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