Water (data page)

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This page provides supplementary chemical data on water.

Contents

1 Material Safety Data Sheet
2 Structure and properties
3 Thermodynamic properties
4 Spectral data
5 References

Material Safety Data Sheet

The handling of this chemical may incur notable safety precautions. It is highly recommend that you seek the Material Safety Datasheet (MSDS) for this chemical from a reliable source such as [SIRI], and follow its directions.

Inhaling of water drops can lead to coughing; filling lungs with water can be lethal. Ingesting of excessive amounts of water can lead to dangerous water intoxication.

Structure and properties

Structure and properties
Index of refraction, n_D 1.333 at 20 °C
Dielectric constant 80.2 at 20 °C
Bond strength ?
Bond length 95.87 pm (equilibrium) (Cook 1974)
Bond angle 103.9° (equilibrium) (Cook 1974)
Magnetic susceptibility ?

Structure and properties
Index of refraction, n_D	1.333 at 20 °C
Dielectric constant	80.2 at 20 °C
Bond strength	?
Bond length	95.87 pm (equilibrium) (Cook 1974)
Bond angle	103.9° (equilibrium) (Cook 1974)
Magnetic susceptibility	?

Thermodynamic properties

Phase behavior
Triple point 273.16 K (0.01 °C), 599.844 Pa
Critical point 647 K (374 °C), 22.1 MPa
Std enthalpy change
of fusion, Δ_fusH^o 6.02 kJ/mol
Std entropy change
of fusion, Δ_fusS^o ? J/(mol·K)
Std enthalpy change
of vaporization, Δ_vapH^o 40.68 kJ/mol
Std entropy change
of vaporization, Δ_vapS^o 108.9 J/(mol·K)
Solid properties
Std enthalpy change
of formation, Δ_fH^o_solid −291.83 kJ/mol
Standard molar entropy,
S^o_solid 41 J/(mol K)
Heat capacity, c_p 37.7 J/(mol K)
Liquid properties
Std enthalpy change
of formation, Δ_fH^o_liquid −285.83 kJ/mol
Standard molar entropy,
S^o_liquid 69.95 J/(mol K)
Heat capacity, c_p 75.4 J/(mol K)
Gas properties
Std enthalpy change
of formation, Δ_fH^o_gas −241.83 kJ/mol
Standard molar entropy,
S^o_gas 188.84 J/(mol K)
Heat capacity, c_p 36.2 J/(mol K)

Phase behavior
Triple point	273.16 K (0.01 °C), 599.844 Pa
Critical point	647 K (374 °C), 22.1 MPa
Std enthalpy change of fusion, Δ_fusH^o	6.02 kJ/mol
Std entropy change of fusion, Δ_fusS^o	? J/(mol·K)
Std enthalpy change of vaporization, Δ_vapH^o	40.68 kJ/mol
Std entropy change of vaporization, Δ_vapS^o	108.9 J/(mol·K)
Solid properties
Std enthalpy change of formation, Δ_fH^o_solid	−291.83 kJ/mol
Standard molar entropy, S^o_solid	41 J/(mol K)
Heat capacity, c_p	37.7 J/(mol K)
Liquid properties
Std enthalpy change of formation, Δ_fH^o_liquid	−285.83 kJ/mol
Standard molar entropy, S^o_liquid	69.95 J/(mol K)
Heat capacity, c_p	75.4 J/(mol K)
Gas properties
Std enthalpy change of formation, Δ_fH^o_gas	−241.83 kJ/mol
Standard molar entropy, S^o_gas	188.84 J/(mol K)
Heat capacity, c_p	36.2 J/(mol K)

Spectral data

UV-Vis
λ_max ? nm
Extinction coefficient, ε ?
IR
Major absorption bands ? cm⁻¹
NMR
Proton NMR
Carbon-13 NMR
Other NMR data
MS
Masses of
main fragments

UV-Vis
λ_max	? nm
Extinction coefficient, ε	?
IR
Major absorption bands	? cm⁻¹
NMR
Proton NMR
Carbon-13 NMR
Other NMR data
MS
Masses of main fragments

References

[NIST Chemistry WebBook]
Cook, R.L, Lucia, F.C.D, & Helminger, P. 1974, J. Mol. Spectrosc., 53, 62.

Except where noted otherwise, data relate to standard ambient temperature and pressure.

[Chemical infoboxDisclaimer] applies.

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