were also used to correlate the data and found to yield closely similar results. In particular, the values of the GC calibration factor
k12 obtained by means of different models differed less than 0.15%,
which indicates the stability of the evaluation procedure and the
reliability of the calibration. The calculated values of adjustable
model parameters, the GC calibration factor, and the respective
standard deviation of fit s(lna12) for the employed models are
listed in Table 3. As seen from Fig. 3, the mixture methyl acetate(
1) + methanol(2) exhibits a positive azeotrope at about
x1 = 0.66. For exact comparison with existing literature data, we
recalculated the present result to a nitrogen-free system and the
normal pressure. Table 4 shows that the normal azeotropic boiling
point determined here is within its expanded experimental uncertainty
(95% confidence range) in agreement with data reported in
the literature by Vasil’eva et al. [26], Gmehling and Bolts [28],
and Orchilles et al. [11], but differs slightly from data of other
authors (Mato and Cepeda [27] and Iliuta et al. [10]).