Solid-Liquid Phase Diagram of the Binary System Octadecanoic Acid and Octadecanol and the Thermal Chemical Property of the Composition at Eutectic Point

Table 3

Comparison of the melting temperature (from the second heating scan) between the experimental and calculated values^a.

Mass fraction (C18-OH) (%)	Temperature, Tp (°C)		ΔT^b (°C)
	Experiment value	Calculated value
0	52.6	52.6	0
10	50.1	50.9	0.8
20	48.6	49.1	0.5
30	47.1	47.0	0.1
35	45.6	45.9	0.4
40	44.2	44.7	0.5
45	45.8	47.3	1.5
50	47.9	48.6	0.7
60	49.8	50.8	1
70	51.5	52.7	1.2
80	53.2	54.4	1.2
90	55.0	55.9	0.9
100	57.2	57.2	0

^aThe differential scanning calorimeter was employed in the measurement with an uncertainty of ±0.01 K as well as latent heat with an uncertainly of ±0.2 J·g⁻¹; ^bΔT is the absolute value of the difference between the experimental temperature and the calculated temperature.