Ternary Azeotropes
Tables of various ternary azeotropes (that is azeotropes consisting of three components). Fraction percentages are given by weight.
Ternary azeotropes of water, b.p.=100 °C
| 2nd component |
b.p.
2nd comp. (˚C) |
3rd component |
b.p.
3rd comp. (˚C) |
|
b.p.
azeo. (˚C) |
% wt
1st |
% wt
2nd |
% wt
3rd |
spec.
grav |
| ethanol |
78.4 |
ethyl acetate |
77.1 |
|
70.3 °C |
7.8 |
9.0 |
83.2 |
0.901 |
| cyclohexane |
80.8 |
62.1 |
7 |
17 |
76 |
|
| benzene |
80.2 |
64.9 |
7.4
U 1.3
L 43.1 |
18.5
U 12.7
L 52.1 |
74.1
U 86.0
L 4.8 |
U 0.866
L 0.892 |
| chloroform |
61.2 |
55.5 |
3.5
U 80.8
L 0.5 |
4.0
U 18.2
L 3.7 |
92.5
U 1.0
L 95.8 |
U 0.976
L 1.441 |
| carbon tetrachloride |
86.8 |
61.8 |
4.3 |
9.7 |
86.0 |
|
3.4
U 44.5
L <0.1 |
10.3
U 48.5
L 5.2 |
86.3
U 7.0
L 94.8 |
U 0.935
L 1.519 |
| ethylene chloride |
83.7 |
66.7 |
5 |
17 |
78 |
|
| acetonitrile |
82.0 |
72.9 |
1.0 |
55.0 |
44.0 |
|
| toluene |
110.6 |
74.4 |
12.0
U 3.1
L 20.7 |
37.0
U 15.6
L 54.8 |
51.0
U 81.3
L 24.5 |
U 0.849
L 0.855 |
| methyl ethyl ketone |
79.6 |
73.2 |
11.0 |
14.0 |
75.0 |
0.832 |
| n-hexane |
69.0 |
56.0 |
3.0
U 0.5
L 19.0 |
12.0
U 3.0
L 75.0 |
85.0
U 96.5
L 6.0 |
U 0.672
L 0.833 |
| n-heptane |
98.4 |
68.8 |
6.1
U 0.2
L 15.0 |
33.0
U 5.0
L 75.9 |
60.9
U 94.8
L 9.1 |
U 0.686
L 0.801 |
| carbon disulfide |
46.2 |
41.3 |
1.6 |
5.0 |
93.4 |
|
| n-propanol |
97.2 |
cyclohexane |
80.8 |
66.6 |
8.5 |
10.0 |
81.5 |
|
| benzene |
80.2 |
68.5 |
8.6 |
9.0 |
82.4 |
|
| carbon tetrachloride |
76.8 |
65.4 |
5
U 84.9
L 1.0 |
11
U 15.0
L 11.0 |
84
U 0.1
L 88.0 |
U 0.979
L 1.436 |
| diethyl ketone |
102.2 |
81.2 |
20 |
20 |
60 |
|
| n-propyl acetate |
101.6 |
82.2 |
21.0 |
19.5 |
59.5 |
|
| isopropanol |
82.5 |
cyclohexane |
80.8 |
64.3 |
7.5 |
18.5 |
74.0 |
|
| 66.1 |
7.5 |
21.5 |
71.0 |
|
| benzene |
80.2 °C |
66.5 |
7.5 |
18.7 |
73.8 |
|
| 65.7 °C |
8.2
U 2.3
L 85.1 |
19.8
U 20.2
L 14.4 |
72.0
U 77.5
L 0.5 |
U 0.855
L 0.966 |
| methyl ethyl ketone |
79.6 |
73.4 |
11.0 |
1.0 |
88.0 |
0.834 |
| toluene |
110.6 |
76.3 |
13.1
U 8.5
L 61.0 |
38.2
U 38.2
L 38.0 |
48.7
U 53.3
L 1.0 |
U 0.845
L 0.930 |
| allyl alcohol |
97.0 |
n-hexane |
69.0 |
59.7 |
5
U 0.5
L 64.4 |
5
U 3.6
L 34.8 |
90
U 95.9
L 0.8 |
U 0.668
L 0.964 |
| benzene |
80.2 |
68.2 |
8.6
U 0.6
L 80.9 |
9.2
U 8.7
L 17.7 |
82.2
U 90.7
L 0.4 |
U 0.877
L 0.985 |
| cyclohexane |
80.8 |
66.2 |
8 |
11 |
81 |
|
| carbon tetrachloride |
76.8 |
65.2 |
5
U 71.7
L 0.8 |
11
U 25.6
L 10.1 |
84
U 2.7
L 89.1 |
U 0.777
L 1.464 |
| benzene |
80.1 |
acetonitrile |
82.0 |
66.0 |
8.2 |
68.5 |
23.3 |
|
| methyl ethyl ketone |
79.6 |
68.2 |
8.8
U 0.6
L 94.7 |
65.1
U 71.3
L 0.1 |
26.1
U 28.1
L 5.2 |
U 0.858
L 0.992 |
| methyl ethyl ketone |
79.6 |
carbon tetrachloride |
76.8 |
65.7 |
3.0
U 94.4
L 0.1 |
22.2
U 5.5
L 22.6 |
74.8
U 0.1
L 77.3 |
U 0.993
L 1.313 |
| cyclohexane |
81.0 |
63.6 |
5.0
U 0.6
L 89.9 |
60.0
U 37.0
L 10.0 |
35.0
U 62.4
L 0.1 |
U 0.769
L 0.98 |
| chloroform |
61.2 |
methanol |
64.65 |
52.6 |
4.0
U 27.0
L 3.0 |
81.0
U 32.0
L 83.0 |
15.0
U 41.0
L 14.0 |
U 1.022
L 1.399 |
| acetone‡ |
56.5 |
60.4 |
4.0 |
57.6 |
38.4 |
|
|
|
Ternary azeotropes of methanol, b.p.=64.65 °C
| 2nd component |
b.p.
2nd comp. (˚C) |
3rd component |
b.p.
3rd comp. (˚C) |
|
b.p.
azeo. (˚C) |
% wt
1st |
% wt
2nd |
% wt
3rd |
spec.
grav |
| acetone |
56.5 |
chloroform‡ |
61.2 |
|
57.5 |
23.0 |
30.0 |
47.0 |
|
| methyl acetate |
57.0 |
53.7 |
17.4 |
5.8 |
76.8 |
0.898 |
| cyclohexane |
81.4 |
51.5 |
16.0 |
43.5 |
40.5 |
|
| methyl acetate |
57.1 |
carbon disulfide |
46.2 |
37.0 |
|
|
|
|
| cyclohexane |
81.4 |
50.8 |
17.8 |
48.6 |
33.6 |
|
| n-hexane |
69.0 |
45.0 |
14.0 |
27.0 |
59.0 |
0.73 |
|
|