Table 3 presents the experimental vapor pressure data
and the related experimental standard deviation (σ) for
soybean oil, castor oil, FAEE from soybean oil, and FAEE
from castor oil. For vegetable oils, relatively low values but
higher than those reported by Perry et al.6 were observed.
This trend may be explained by different experimental
techniques and, more importantly, by the purification
procedure used by Perry et al.,6 where only the heavy
fraction of oil was analyzed