Solvent Data - Heidolph Hei-VAP Precision Instrucciones De Funcionamiento Originales

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Appendix

11.3 Solvent data

The graph shows the relationship between the pressure and vapor temperature of a selection of solvents.
Figure 11-1: Graph
Torr to mbar conversion: [mmHg] ≈ 3/4 [mbar]
Solvent data
Solvents
Acetone
Acetonitrile
Benzene
n-butanol (butyl alcohol)
tert.-butanol (tert-butyl alcohol)
2-Butanone (methyl ethyl ketone)
Chlorobenzene
Cyclohexane
1.2 Dichloroethane
84
The temperature difference between the vapor temperature and the cooling medium
should be at 20 K to result in sufficient condensation.
The temperature difference between the heating bath and vapor temperature should be at
20 K to reach a sufficient Distillation rate (dT).
i.e.: Set a vacuum for a vapor point at 40 °C, set the heating bath temperature at 60 °C.
Total
formula
C H
3 6
C H
2 3
C H
6 6
C H
4 10
C H
4 10
C H
4 8
C H
6 5
C H
6 12
C H
2 4
MW Vapor
point
[g/mol
] [°C]
O 58,08 56,5
N 41,05 81,8
78,11 80,1
O 74,12 117,5
O 74,12 82,9
O 72,11 79,6
CI 112,60 132,2
84,16 80,7
CI 98,96 82,4
2
ΔHva Vacuum for a
p vapor point at
40 °C
[J/g]
[mbar] [mm(Hg)]
550 556 387
833 230 173
549 236 177
619 25 19
588 130 98
473 243 182
375 36 27
389 235 176
336 210 158
Hei-VAP Precision