Sodium chloride (data page)

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 eChemPortal, and follow its direction.

Structure and properties

Structure and properties
Index of refraction, n_D	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, Δ_fusH^o	27.95 kJ/mol (0.52 kJ/g)[1][2]
Std entropy change of fusion, Δ_fusS^o	26.02 J/(mol·K)
Std enthalpy change of vaporization, Δ_vapH^o	? kJ/mol
Std entropy change of vaporization, Δ_vapS^o	? J/(mol·K)
Solid properties
Std enthalpy change of formation, Δ_fH^o_solid	−411.12 kJ/mol[2]
Standard molar entropy, S^o_solid	72 J/(mol·K)
Heat capacity, c_p	50 J/(mol·K) ; 0.853 J/(g·k)[2]
Liquid properties
Std enthalpy change of formation, Δ_fH^o_liquid	−385.92 kJ/mol
Standard molar entropy, S^o_liquid	95.06 J/(mol·K)
Density	1.549 g/cm³,[2] at 850 °C
Heat capacity, c_p	? J/(mol·K)
Boiling point	1465 °C[2]
Gas properties
Std enthalpy change of formation, Δ_fH^o_gas	−181.42 kJ/mol
Standard molar entropy, S^o_gas	229.79 J/(mol·K)
Heat capacity, c_p	? J/(mol·K)

Density data of aqueous solutions

Water–NaCl phase diagram

Properties of water–NaCl mixtures [3]
NaCl, wt%	T_eq, °C	ρ, g/cm³	n	η, mPa·s
0	0	0.99984	1.333	1.002
0.5	−0.3	1.0018	1.3339	1.011
1	−0.59	1.0053	1.3347	1.02
2	−1.19	1.0125	1.3365	1.036
3	−1.79	1.0196	1.3383	1.052
4	−2.41	1.0268	1.34	1.068
5	−3.05	1.034	1.3418	1.085
6	−3.7	1.0413	1.3435	1.104
7	−4.38	1.0486	1.3453	1.124
8	−5.08	1.0559	1.347	1.145
9	−5.81	1.0633	1.3488	1.168
10	−6.56	1.0707	1.3505	1.193
12	−8.18	1.0857	1.3541	1.25
14	−9.94	1.1008	1.3576	1.317
16	−11.89	1.1162	1.3612	1.388
18	−14.04	1.1319	1.3648	1.463
20	−16.46	1.1478	1.3684	1.557
22	−19.18	1.164	1.3721	1.676
23.3	−21.1
23.7	−17.3
24.9	−11.1
26.1	−2.7
26.28	0
26.32	10
26.41	20
26.45	25
26.52	30
26.67	40
26.84	50
27.03	60
27.25	70
27.5	80
27.78	90
28.05	100

Note: ρ is density, n is refractive index at 589 nm, and η is viscosity, all at 20 °C; T_eq is the equilibrium temperature between two phases: ice/liquid solution for T_eq < 0–0.1 °C and NaCl/liquid solution for T_eq above 0.1 °C.

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

This box:

Except where noted otherwise, data relate to Standard temperature and pressure.
Reliability of data general note.

References

"NaCl CID 5234, 4.2.14 Other Experimental Properties"
"NaCl Other Chemical/Physical Properties"
Lide, D. R., ed. (2005). CRC Handbook of Chemistry and Physics (86th ed.). Boca Raton (FL): CRC Press. pp. 8–71, 8–116. ISBN 0-8493-0486-5.

External links

vapour pressure J Chem Thermod

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[pubchem-1] "NaCl CID 5234, 4.2.14 Other Experimental Properties"

[toxnet-2] "NaCl Other Chemical/Physical Properties"

[3] Lide, D. R., ed. (2005). CRC Handbook of Chemistry and Physics (86th ed.). Boca Raton (FL): CRC Press. pp. 8–71, 8–116. ISBN 0-8493-0486-5.