Self-diffusion measurements of ethanol and propanol

Self-diffusion coefficients of ethanol and 1-propanol were measured by the N.M.R. spin-echo technique over the temperature range 285 K ⩽- T ⩽- 320 K and the pressure range 0·1 MPa ⩽- P ⩽- 400 MPa. The results are interpreted on the basis of the rough hard-sphere model. A test of the Stokes-Einstein relation is performed and a modification of it is proposed.

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