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Rise of the straight line is a function of evaporation enthalpy. It is similar for similar
chemical substances with similar boil temperature. Hence, straight lines depicted may be
used for rough reference to a lightly deviating boil point.
A water jet pump or diaphragm-type pump may lower boil temperature by about 100°C.
Rule of thumb: decrease pressure to ½ will decrease boil point by about 15°C.
Solvent
Aceton
Acetonitril
Benzol
n-Butanol (Butylalkohol)
tert.-Butanol (tert.-Butylalkohol)
2-Butanon (Methylethylketon)
tert.-Butylmethylether
Chlorbenzol
Cyclohexan
1,2-Dichlorethan
1,2-Dichlorethylen (cis)
1,2-Dichlorethylen (trans)
Dichlormethan (Methylenchlorid)
Diethylether
Diisopropylether
Dimethylformamid
1,4-Dioxan
Ethanol
Ethylacetat
Heptan
Hexan
Methanol
3-Methyl-1-Butanol
(Isoamylalkohol)
Pentachlorethan
Pentan
n-Pentanol (Amylalkohol)
1-Propanol (n-Propylalkohol)
2-Propanol (Isopropylalkohol)
1,1,2,2-Tetrachlorethan
Tetrachlorethylen
Tetrachlormethan
(Carbontetrachlorid)
Tetrahydrofuran
Toluol
1,1,1-Trichlorethan
Trichlorethylen
Trichlormethan (Chloroform)
Wasser
Xylol (Isomeren-Gemisch)
Conversion factor [mbar] to [mm(Hg)]:
Total
MW
formula
[g/mol]
C
H
O
58,08
3
6
C2H3N
41,05
C
H
78,11
6
6
C
H
O
74,12
4
10
C
H
O
74,12
4
10
C
H
O
72,11
4
8
C
H
O
88,15
5
12
C
H
CI
112,60
6
5
C
H
84,16
6
12
C
H
CI
98,96
2
4
2
C
H
CI
96,94
2
2
2
C
H
CI
96,94
2
2
2
CH
CI
84,93
2
2
C
H
O
74,12
4
10
C
H
O
102,20
6
14
C
H
NO
73,09
3
7
C
H
O
88,11
4
8
2
C
H
O
46,07
2
6
C
H
O
88,11
4
8
2
C
H
85,09
7
16
C
H
86,18
6
14
CH
O
32,04
4
C
H
O
88,15
5
12
C
HCI
202,30
2
5
C
H
72,15
5
12
C
H
O
88,15
5
12
C
H
O
60,10
3
8
C
H
O
60,10
3
8
C
H
CI
167,90
2
2
4
C
CI
165,80
2
4
CCI
153,80
4
C
H
O
72,11
4
8
C
H
92,14
7
8
C
H
CI
133,40
2
3
3
C
HCI
131,40
2
3
CHCI
119,40
3
H
O
18,02
2
C
H
106,20
8
10
≈
3
[
mm
(
Hg
)]
[
mbar
4
62
ΔH
MW
vap
[°C]
[J/g]
[mbar]
56,5
550
81,8
833
80,1
549
117,5
619
82,9
588
79,6
473
55,0
132,2
375
80,7
389
82,4
336
59,0
320
47,8
313
40,7
373
atm.
34,6
392
atm.
67,5
318
153,0
101,1
406
78,4
879
77,1
394
98,4
439
68,7
370
64,7
1225
130,6
593
160,5
203
36,1
382
atm.
137,8
593
97,8
787
82,5
701
145,9
247
120,8
233
76,7
225
66,0
110,6
425
74,1
251
86,7
265
61,3
263
100,0
2259
137-143
390
]
Vacuum for
Boiling point
at 40°C
[mm(Hg)]
556
387
230
173
236
177
25
19
130
98
243
182
36
27
235
176
210
158
479
134
751
563
atm.
atm.
375
281
11
8
107
80
175
131
240
180
120
90
335
251
337
253
14
11
13
10
atm.
11
8
67
50
137
103
35
26
53
40
271
203
357
268
77
58
300
225
183
137
474
356
72
54
25
19
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