4 3 )] ( [ mbar hg mm – Heidolph LABOROTA 20 eco User Manual
Page 66
66
E
Avoid overpressure in the glassware kit while distilling low-boiling solvents. Aerate
glassware kit as required. Overpressure in the glassware kit may damage the
evaporator or even blow-up parts of the glassware kit.
Solvent
Empirica
l formula
MW
[g/mol]
Boil.
[°C]
H
vap
[J/g]
Vacuum for boil.at
40 °C
[mbar]
[mm(Hg)]
Acetone
C
3
H
6
O
58.08
56.5
550
556
387
Acetonitrile
C
2
H
3
N
41.05
81.8
833
230
173
Benzene
C
6
H
6
78.11
80.1
549
236
177
n-butanol (butyl alcohol)
C
4
H
10
O
74.12
117.5
619
25
19
Tert. butanol (tert. butyl alcohol)
C
4
H
10
O
74.12
82.9
588
130
98
2-butanone (methyl ethyl ketone)
C
4
H
8
O
72.11
79.6
473
243
182
Chlorobenzene
C
6
H
5
CI
112.60
132.2
375
36
27
Cyclohexane
C
6
H
12
84.16
80.7
389
235
176
1,2-dichloroethane
C
2
H
4
CI
2
98.96
82.4
336
210
158
1,2-dichloroethylene (cis)
C
2
H
2
CI
2
96.94
59.0
320
479
134
1,2-dichloroethylene (trans)
C
2
H
2
CI
2
96.94
47.8
313
751
563
Dichloromethane (methylene dichloride) CH
2
CI
2
84.93
40.7
373
atm.
atm.
Diethyl ether
C
4
H
10
O
74.12
34.6
392
atm.
atm.
Diisopropyl ether
C
6
H
14
O
102.20
67.5
318
375
281
Dimethyl formamide
C
3
H
7
NO
73.09
153.0
11
8
1,4-dioxan
C
4
H
8
O
2
88.11
101.1
406
107
80
Ethanol
C
2
H
6
O
46.07
78.4
879
175
131
Ethyl acetate
C
4
H
8
O
2
88.11
77.1
394
240
180
Heptane
C
7
H
16
85.09
98.4
439
120
90
Hexane
C
6
H
14
86.18
68.7
370
335
251
Methanol
CH
4
O
32.04
64.7
1225
337
253
3-methyl-1-butanol (isoamyl alcohol)
C
5
H
12
O
88.15
130.6
593
14
11
Pentachloroethane
C
2
HCI
5
202.30
160.5
203
13
10
Pentane
C
5
H
12
72.15
36.1
382
atm.
atm.
n-pentanol (amyl alcohol)
C
5
H
12
O
88.15
137.8
593
11
8
1-propanol (n-propyl alcohol)
C
3
H
8
O
60.10
97.8
787
67
50
2-propanol (isopropyl alcohol)
C
3
H
8
O
60.10
82.5
701
137
103
1,1,2,2-tetrachloroethane
C
2
H
2
CI
4
167.90
145.9
247
35
26
Tetrachloroethylene
C
2
CI
4
165.80
120.8
233
53
40
Tetrachloromethane (carbon
tetrachloride)
CCI
4
153.80
76.7
225
271
203
Tetrahydrofuran
C
4
H
8
O
72.11
66.0
–
357
268
Toluene
C
7
H
8
92.14
110.6
425
77
58
1,1,1-trichloroethane
C
2
H
3
CI
3
133.40
74.1
251
300
225
Trichloroethylene
C
2
HCI
3
131.40
86.7
265
183
137
Trichloromethane (chloroform)
CHCI
3
119.40
61.3
263
474
356
Water
H
2
O
18.02
100.0
2259
72
54
Xylene (isomer mixture)
C
8
H
10
106.20
137
–143
390
25
19
Conversion factor [mbar] to [mm(Hg)]:
]
[
4
3
)]
(
[
mbar
Hg
mm