乙醇液体密度是0.789g/cm3(20C°) ，乙醇气体密度为1.59kg/m3，沸点是78.4℃，熔点是-114.3℃，易燃，其蒸气能与空气形成爆炸性混合物，能与水以任意比互溶。能与水、氯仿、乙醚、甲醇、丙酮和其他多数有机溶剂混溶，相对密度(d15.56)0.816。
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乙醇溶液密度(g/cm3;)(20℃)
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每(g/cm3;)含有乙醇质量(%)g
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浓度（体积比%)=度(1度=1%体积）
|
|
0.998
|
0.15
|
0.2
|
|
0.996
|
1.2
|
1.5
|
|
0.994
|
2.3
|
3
|
|
0.992
|
3.5
|
4.4
|
|
0.99
|
4.7
|
5.9
|
|
0.988
|
5.9
|
7.4
|
|
0.985
|
7.9
|
9.9
|
|
0.982
|
10
|
12.5
|
|
0.98
|
11.5
|
14.2
|
|
0.978
|
13
|
16
|
|
0.975
|
15.3
|
18.9
|
|
0.972
|
17.6
|
21.7
|
|
0.97
|
19.1
|
23.5
|
|
0.968
|
20.6
|
25.3
|
|
0.965
|
22.8
|
27.8
|
|
0.962
|
24.8
|
30.3
|
|
0.96
|
26.2
|
31.8
|
|
0.957
|
28.1
|
34
|
|
0.954
|
29.9
|
36.1
|
|
0.95
|
32.2
|
38.8
|
|
0.945
|
35
|
41.3
|
|
0.94
|
37.6
|
44.8
|
|
0.935
|
40.1
|
47.5
|
|
0.93
|
42.6
|
50.2
|
|
0.925
|
44.9
|
52.7
|
|
0.92
|
47.3
|
55.1
|
|
0.915
|
49.5
|
57.4
|
|
0.91
|
51.8
|
59.7
|
|
0.905
|
53.9
|
61.9
|
|
0.9
|
56.2
|
64
|
|
0.895
|
58.3
|
66.2
|
|
0.89
|
60.5
|
68.2
|
|
0.885
|
62.7
|
70.2
|
|
0.88
|
64.8
|
72.2
|
|
0.875
|
66.9
|
74.2
|
|
0.87
|
69
|
76.1
|
|
0.865
|
71.1
|
77.9
|
|
0.86
|
73.2
|
79.7
|
|
0.855
|
75.3
|
81.5
|
|
0.85
|
77.3
|
83.3
|
|
0.845
|
79.4
|
85
|
|
0.84
|
81.4
|
86.6
|
|
0.835
|
83.4
|
88.2
|
|
0.83
|
85.4
|
89.8
|
|
0.825
|
87.3
|
91.2
|
|
0.82
|
89.2
|
92.7
|
|
0.815
|
91.1
|
94.1
|
|
0.81
|
93
|
95.4
|
|
0.805
|
94.4
|
96.6
|
|
0.8
|
96.5
|
97.7
|
|
0.795
|
98.2
|
98.9
|
|
0.791
|
98.5
|
99.7
|
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