Densities, Viscosities, Dielectric Constant sand Ionic Product Constants of Water at Different Temperatures
表中水的密度为不含有空气的纯水在标准大气压（101.325kPa）下的密度值。
水的离子积常数Kw = αH+·αOH-，且αH+ = αOH- 。
水在不同温度下的密度、粘度、介电常数和离子积常数Kw值
Densities, Viscosities, Dielectric Constants and Ionic Product Constants of Water at Different Temperatures
|
温度t
(Temperature) /0C
|
密度ρ(Density)
/(g/ml)
|
黏度η
(Viscosity)
/(10-3Pa·s)
|
介电常数ε(Dielectric constant)/(F/m)
|
离子积常数(Ionic product constant) Kw
|
|
0
|
0.99984
|
-
|
87.90
|
0.11×10-14
|
|
2
|
0.99994
|
-
|
-
|
-
|
|
4
|
0.99997
|
-
|
-
|
-
|
|
5
|
0.999965
|
1.5188
|
85.90
|
0.17×10-14
|
|
6
|
0.99994
|
-
|
-
|
-
|
|
8
|
0.99985
|
-
|
-
|
-
|
|
10
|
0.999700
|
1.3097
|
83.95
|
0.30×10-14
|
|
12
|
0.99950
|
-
|
-
|
-
|
|
14
|
0.99924
|
-
|
-
|
-
|
|
15
|
0.999099
|
1.1447
|
82.04
|
0.46×10-14
|
|
16
|
0.99894
|
-
|
-
|
0.50×10-14
|
|
17
|
-
|
-
|
-
|
0.55×10-14
|
|
18
|
0.99860
|
-
|
-
|
0.60×10-14
|
|
19
|
-
|
-
|
-
|
0.65×10-14
|
|
20
|
0.998203
|
1.0087
|
80.18
|
0.69×10-14
|
|
21
|
-
|
-
|
-
|
0.76×10-14
|
|
22
|
0.99777
|
-
|
-
|
0.81×10-14
|
|
23
|
-
|
-
|
-
|
0.87×10-14
|
|
24
|
0.99730
|
-
|
-
|
0.93×10-14
|
|
25
|
0.997044
|
0.8949
|
78.36
|
1.00×10-14
|
|
26
|
0.99678
|
-
|
-
|
1.10×10-14
|
|
27
|
-
|
-
|
-
|
1.17×10-14
|
|
28
|
0.99623
|
-
|
-
|
1.29×10-14
|
|
29
|
-
|
-
|
-
|
1.38×10-14
|
|
30
|
0.995646
|
0.8004
|
76.58
|
1.48×10-14
|
|
31
|
-
|
-
|
-
|
1.58×10-14
|
|
32
|
0.99503
|
-
|
-
|
1.70×10-14
|
|
33
|
-
|
-
|
-
|
1.82×10-14
|
|
34
|
0.99437
|
-
|
-
|
1.95×10-14
|
|
35
|
0.99403
|
0.7208
|
74.85
|
2.09×10-14
|
|
36
|
0.99369
|
-
|
-
|
2.24×10-14
|
|
37
|
-
|
-
|
-
|
2.40×10-14
|
|
38
|
0.99297
|
-
|
-
|
2.57×10-14
|
|
39
|
-
|
-
|
-
|
2.75×10-14
|
|
40
|
0.99222
|
-
|
73.15
|
2.95×10-14
|
|
42
|
0.99144
|
-
|
-
|
-
|
|
44
|
0.99063
|
-
|
-
|
-
|
|
45
|
-
|
-
|
71.50
|
-
|
|
46
|
0.98979
|
-
|
-
|
-
|
|
48
|
0.98893
|
-
|
-
|
-
|
|
50
|
0.98804
|
-
|
69.88
|
5.5×10-14
|
|
52
|
0.98712
|
-
|
-
|
-
|
|
54
|
0.98618
|
-
|
-
|
-
|
|
55
|
-
|
-
|
68.30
|
-
|
|
56
|
0.98521
|
-
|
-
|
-
|
|
58
|
0.98422
|
-
|
-
|
-
|
|
60
|
0.98320
|
-
|
66.76
|
9.55×10-14
|
|
62
|
0.98216
|
-
|
-
|
-
|
|
64
|
0.98109
|
-
|
-
|
-
|
|
65
|
-
|
-
|
65.25
|
-
|
|
66
|
0.98001
|
-
|
-
|
-
|
|
68
|
0.97890
|
-
|
-
|
-
|
|
70
|
0.97777
|