The vapor-liquid equilibrium behavior of ferrocene in methanol or ethanol w
as measured at atmospheric pressure in the dilute composition range of ferr
ocene with a recirculation still. Equilibrium compositions were determined
with an ultraviolet spectrometer having an accuracy of +/-0.000 001 mole fr
action of ferrocene, The accuracies of temperature and pressure are +/-0.01
K and +/-0.01 kPa, respectively. The volatilities of ferrocene at infinite
dilution were determined to be 0.032 and 0.036 in methanol and ethanol, re
spectively.