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Water, H2O
Categories: Fluid
Material Notes:

Key Words: H2O
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Physical PropertiesOriginal ValueComments
Density 0.95838 g/cc
@Temperature 100 °C
 0.99823 g/cc
@Temperature 20.0 °C
 0.99987 g/cc
@Temperature 0.000 °C
 1.00000 g/cc
@Temperature 3.98 °C		density = 1.00000 g/cc at 3.98°C (most dense temperature)
pH 7.0
Viscosity 0.2818 cP
@Pressure 0.100 MPa,
Temperature 100 °C
 0.3145 cP
@Pressure 0.100 MPa,
Temperature 90.0 °C
 0.3544 cP
@Pressure 0.100 MPa,
Temperature 80.0 °C
 0.404 cP
@Pressure 0.100 MPa,
Temperature 70.0 °C
 0.4665 cP
@Pressure 0.100 MPa,
Temperature 60.0 °C
 0.547 cP
@Pressure 0.100 MPa,
Temperature 50.0 °C
 0.6532 cP
@Pressure 0.100 MPa,
Temperature 40.0 °C
 0.7977 cP
@Pressure 0.100 MPa,
Temperature 30.0 °C
 1.002 cP
@Pressure 0.100 MPa,
Temperature 20.0 °C
 1.307 cP
@Pressure 0.100 MPa,
Temperature 10.0 °C
 1.793 cP
@Pressure 0.100 MPa,
Temperature 0.000 °C
Molecular Weight 18.015 g/mol
Vapor Pressure 0.006113 bar
@Temperature 0.000 °C
 0.012281 bar
@Temperature 10.0 °C
 0.023388 bar
@Temperature 20.0 °C
 0.042455 bar
@Temperature 30.0 °C
 0.073814 bar
@Temperature 40.0 °C
 0.12344 bar
@Temperature 50.0 °C
 0.19932 bar
@Temperature 60.0 °C
 0.31176 bar
@Temperature 70.0 °C
 0.47373 bar
@Temperature 80.0 °C
 0.70117 bar
@Temperature 90.0 °C
 1.01325 bar
@Temperature 100 °C
 17.351 torr
@Temperature 20.0 °C
Surface Tension 58.91 dynes/cm
@Pressure 0.100 MPa,
Temperature 100 °C
 60.82 dynes/cm
@Pressure 0.100 MPa,
Temperature 90.0 °C
 62.67 dynes/cm
@Pressure 0.100 MPa,
Temperature 80.0 °C
 64.47 dynes/cm
@Pressure 0.100 MPa,
Temperature 70.0 °C
 66.24 dynes/cm
@Pressure 0.100 MPa,
Temperature 60.0 °C
 67.94 dynes/cm
@Pressure 0.100 MPa,
Temperature 50.0 °C
 69.6 dynes/cm
@Pressure 0.100 MPa,
Temperature 40.0 °C
 71.2 dynes/cm
@Pressure 0.100 MPa,
Temperature 30.0 °C
 72.75 dynes/cm
@Pressure 0.100 MPa,
Temperature 20.0 °C
 74.23 dynes/cm
@Pressure 0.100 MPa,
Temperature 10.0 °C
 75.64 dynes/cm
@Pressure 0.100 MPa,
Temperature 0.000 °C
 
Chemical PropertiesOriginal ValueComments
Critical Pressure 217.6 atm
Critical Temperature 374.1 °C
Critical Density 0.322 g/cc
Critical Molar Volume 56.0 cm³/mol
 
Electrical PropertiesOriginal ValueComments
Electrical Resistivity 1.818e+7 ohm-cm
Dielectric Constant 55.51
@Pressure 0.100 MPa,
Temperature 100 °C
 58.12
@Pressure 0.100 MPa,
Temperature 90.0 °C
 60.86
@Pressure 0.100 MPa,
Temperature 80.0 °C
 63.73
@Pressure 0.100 MPa,
Temperature 70.0 °C
 66.73
@Pressure 0.100 MPa,
Temperature 60.0 °C
 69.88
@Pressure 0.100 MPa,
Temperature 50.0 °C
 73.17
@Pressure 0.100 MPa,
Temperature 40.0 °C
 76.6
@Pressure 0.100 MPa,
Temperature 30.0 °C
 80.2
@Pressure 0.100 MPa,
Temperature 20.0 °C
 83.96
@Pressure 0.100 MPa,
Temperature 10.0 °C
 87.9
@Pressure 0.100 MPa,
Temperature 0.000 °C
 
Thermal PropertiesOriginal ValueComments
Heat of Fusion 333.5 J/g
Heat of Vaporization 539.6 cal/g
 2257 J/g
CTE, linear -23.0 µm/m-°C
@Temperature 0.000 °C
 29.3 µm/m-°C
@Temperature 10.0 °C
 69.0 µm/m-°C
@Temperature 20.0 °C
 153 µm/m-°C
@Temperature 50.0 °C
 250 µm/m-°C
@Temperature 100 °C
Specific Heat Capacity 1.867 J/g-°C
@Temperature 25.0 °C		Vapor
 4.178 J/g-°C
@Pressure 0.100 MPa,
Temperature 30.0 °C		CP
 4.179 J/g-°C
@Pressure 0.100 MPa,
Temperature 40.0 °C		CP
 4.181 J/g-°C
@Pressure 0.100 MPa,
Temperature 50.0 °C		CP
 4.182 J/g-°C
@Pressure 0.100 MPa,
Temperature 20.0 °C		CP
 4.184 J/g-°C
@Pressure 0.100 MPa,
Temperature 60.0 °C		CP
 4.189 J/g-°C
@Pressure 0.100 MPa,
Temperature 70.0 °C		CP
 4.192 J/g-°C
@Pressure 0.100 MPa,
Temperature 10.0 °C		CP
 4.196 J/g-°C
@Pressure 0.100 MPa,
Temperature 80.0 °C		CP
 4.205 J/g-°C
@Pressure 0.100 MPa,
Temperature 90.0 °C		CP
 4.216 J/g-°C
@Pressure 0.100 MPa,
Temperature 100 °C		CP
 4.218 J/g-°C
@Pressure 0.100 MPa,
Temperature 0.000 °C		CP
Thermal Conductivity 0.0187 W/m-K
@Temperature 26.9 °C		gas at saturation vapor pressure
 0.1317 W/m-K
@Temperature -73.1 °C		gas at saturation vapor pressure
 0.0271 W/m-K
@Pressure 0.100 MPa,
Temperature 127 °C		gas
 0.0357 W/m-K
@Pressure 0.100 MPa,
Temperature 227 °C		gas
 0.0471 W/m-K
@Pressure 0.100 MPa,
Temperature 327 °C		gas
 0.561 W/m-K
@Pressure 0.100 MPa,
Temperature 0.000 °C		liquid
 0.580 W/m-K
@Pressure 0.100 MPa,
Temperature 10.0 °C		liquid
 0.5984 W/m-K
@Pressure 0.100 MPa,
Temperature 20.0 °C		liquid
 0.6154 W/m-K
@Pressure 0.100 MPa,
Temperature 30.0 °C		liquid
 0.6305 W/m-K
@Pressure 0.100 MPa,
Temperature 40.0 °C		liquid
 0.6435 W/m-K
@Pressure 0.100 MPa,
Temperature 50.0 °C		liquid
 0.6543 W/m-K
@Pressure 0.100 MPa,
Temperature 60.0 °C		liquid
 0.6631 W/m-K
@Pressure 0.100 MPa,
Temperature 70.0 °C		liquid
 0.670 W/m-K
@Pressure 0.100 MPa,
Temperature 80.0 °C		liquid
 0.6753 W/m-K
@Pressure 0.100 MPa,
Temperature 90.0 °C		liquid
 0.6791 W/m-K
@Pressure 0.100 MPa,
Temperature 100 °C		liquid
Melting Point 0.000 °C
Boiling Point 100 °C
 
Optical PropertiesOriginal ValueComments
Refractive Index 1.31783
@Temperature 100 °C,
Wavelength 589.3 nm		Sodium light
 1.33299
@Temperature 20.0 °C,
Wavelength 589.3 nm		Sodium light
 
Descriptive Properties
Antoine's Vapor Pressure A Parameter18.3036
Antoine's Vapor Pressure B Parameter3816.44
Antoine's Vapor Pressure C Parameter-46.13
Antoine's Vapor Pressure Formulaln πp = A - B/(T+C)P in mmHg and T in K
CAS registry number (CARN)7732-18-5
Chemical FormulaH2O
Critical Compressibility (Zc)0.229
Dipole moment (p/C.m)6.004E-28
Dynamic Viscosity Formulalog10 η=A(1/T-1/B)
Dynamic Viscosity Parameter A658.25
Dynamic Viscosity Parameter B283.16
Molar Heat Capacity (298K)33.637 J/mol-K
Molar Heat Capacity of Vapor a Parameter32.221
Molar Heat Capacity of Vapor b Parameter0.0019
Molar Heat Capacity of Vapor c Parameter1.055E-05
Molar Heat Capacity of Vapor d Parameter-3.594E-09
Molar Heat Capacity of Vapor FormulaCp = a + bT + cT2 + dT3Cp in J/mol-K
UV cut-off (nm)191

References for this datasheet.

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