Property

Seawater 35ppt

Pure water

Density, g cm^-3, 25 ͦ C

1.02412

1.0029

Specific conductivity, ohm^-1 cm^-1, 25 ͦ C

0.0532

-

Viscosity, millipoise, 25 ͦ C

9.02

8.90

Vapor pressure, mm Hg, 20 ͦ C

17.4

17.34

Isothermal compressibility, vol/atm, 0 ͦ C

46.4 x 10^-6

50.3 x 10^-6

Temperature of maximum density, ͦ C

-3.25

3.98

Freezing point ͦ C

-1.91

0.00

Surface tension, dyne cm^-1, 25 ͦ C

72.74

71.97

Velocity of sound, ms^-1, 0 ͦ C

1450

1407

Specific heat, J g^-1 ͦ C^-1, 17.5 ͦ C

3.898

4.182