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Chapter 30 Appendix F: Properties of Water

Density: 0.99984 g/cm3 at 0°C
0.99970 g/cm3 at 10°C
0.99821 g/cm3 at 20°C
0.98803 g/cm3 at 50°C
0.95840 g/cm3 at 100°C
Enthalpy (heat) of vaporization: 45.054 kJ/mol at 0°C
43.990 kJ/mol at 25°C
42.482 kJ/mol at 60°C
40.657 kJ/mol at 100°C
Surface tension: 74.23 J/m2 at 10°C
71.99 J/m2 at 25°C
67.94 J/m2 at 50°C
58.91 J/m2 at 100°C
Viscosity: 1.793 mPa ⋅ s at 0°C
0.890 mPa_s at 25°C
0.547 mPa_s at 50°C
0.282 mPa_s at 100°C
Ion-product constant,Kw: 1.15 × 10−15 at 0°C
1.01 × 10−14 at 25°C
5.31 × 10−14 at 50°C
5.43 × 10−13 at 100°C
Specific heat (Cs): 4.2176 J/(g-°C) at 0°C
4.1818 J/(g-°C) at 20°C
4.1806 J/(g-°C) at 50°C
4.2159 J/(g-°C) at 100°C
Vapor pressure of water (kPa)
T(°C) P(kPa) T(°C) P(kPa) T(°C) P(kPa) T(°C) P(kPa)
0 0.61129 30 4.2455 60 19.932 90 70.117
5 0.87260 35 5.6267 65 25.022 95 84.529
10 1.2281 40 7.3814 70 31.176 100 101.32
15 1.7056 45 9.5898 75 38.563 105 120.79
20 2.3388 50 12.344 80 47.373 110 143.24
25 3.1690 55 15.752 85 57.815 115 169.02
Vapor pressure of water (mmHg)
T(°C) P(mmHg) T(°C) P(mmHg) T(°C) P(mmHg) T(°C) P(mmHg)
0 4.585 30 31.844 60 149.50 90 525.91
5 6.545 35 42.203 65 187.68 95 634.01
10 9.211 40 55.364 70 233.84 100 759.95
15 12.793 45 71.929 75 289.24 105 905.99
20 17.542 50 92.59 80 355.32 110 1074.38
25 23.769 55 118.15 85 433.64 115 1267.74

Source of data: CRC Handbook of Chemistry and Physics, 84th Edition (2004).