Sodium chloride (data page)

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This page provides supplementary chemical data on sodium chloride.

Material safety data sheet

The handling of this chemical may incur notable safety precautions. It is highly recommended that you seek the material safety data sheet (MSDS) for this chemical from a reliable source such as MSDS Search Engine, and follow its direction.

Structure and properties

Structure and properties
Index of refraction, nD 1.5442
Abbe number ?
Dielectric constant, 6.12 at 17–22 °C
Bond strength ?
Bond length ?
Bond angle ?
Magnetic susceptibility −30.3×10−6 cgs

Thermodynamic properties

Phase behavior
Triple point 1074 K (801 °C), 30 Pa
Critical point 3900 K (3600 °C), 26×106 Pa
Std enthalpy change
of fusion
, ΔfusHo
27.95 kJ/mol (0.52 kJ/g)[1][2]
Std entropy change
of fusion
, ΔfusSo
? J/(mol·K)
Std enthalpy change
of vaporization
, ΔvapHo
? kJ/mol
Std entropy change
of vaporization
, ΔvapSo
? J/(mol·K)
Solid properties
Std enthalpy change
of formation
, ΔfHosolid
−411.12 kJ/mol[2]
Standard molar entropy,
72 J/(mol·K)
Heat capacity, cp 50 J/(mol·K) ; 0.853 J/(g·k)[2]
Liquid properties
Std enthalpy change
of formation
, ΔfHoliquid
−385.92 kJ/mol
Standard molar entropy,
95.06 J/(mol·K)
Density 1.549 g/cm3,[2] at 850 °C
Heat capacity, cp ? J/(mol·K)
Boiling point 1465 °C[2]
Gas properties
Std enthalpy change
of formation
, ΔfHogas
−181.42 kJ/mol
Standard molar entropy,
229.79 J/(mol·K)
Heat capacity, cp ? J/(mol·K)

Spectral data

λmax ? nm
Extinction coefficient, ε ?
Major absorption bands ? cm−1
Proton NMR  
Carbon-13 NMR  
Other NMR data  
Masses of
main fragments


  1. ^ "NaCl CID 5234, 4.2.14 Other Experimental Properties"
  2. ^ a b c d e "NaCl Other Chemical/Physical Properties"

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

Disclaimer applies.

External links

  • vapour pressure J Chem Thermod
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