2-butanone (1) + water (2) binary

(i) VLE type: two-liquid phase forming mixture

(ii) Vapor pressures:

p1s= 42.1*exp(para1*tclap**3+para2*tclap**2+para3*tclap) [bar]

para1=0.166255372094337

para2=-0.338357600295482

para3=6.91698751947342

tclap=1-1/(T/536.8)

T: temperature [K]

p2s=221.2*exp(para1*tclap**3+para2*tclap**2+para3*tclap) [bar]

para1=0.222438359031832

para2=-0.0522401918107863

para3=7.17725676105391

tclap=1-1/(T/647.3)

T: temperature [K]

(iii) y_1,2L =aT**2+bT+c (0 deg C < T < 125 deg C)

a=-2.72748693

b=-0.002686283

c=0.8306088

T: temperature [deg C]

The values, T and y_1,2L, denote temperature and y1 value of the two-liquid phase forming mixture and y1 is the composition of component 1 in the vapor phase.

Fig. 2

y_1,2L vs T for the 2-butanone (1) + water (2) binary, (○) y_1,2L determined from constant temperature VLE data, (●) y_1,2L determined from constant pressure data, and (−) predicted using the PPM.