Sodium chloride (data page)

This page provides supplementary chemical data on sodium chloride.

Material safety data sheet[edit]

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[edit]

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[edit]

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[edit]

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,^{[clarification needed]} 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[edit]

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[edit]

^ "NaCl CID 5234, 4.2.14 Other Experimental Properties"
^ ^a ^b ^c ^d ^e "NaCl Other Chemical/Physical Properties"^{[dead link]}
^ 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[edit]

vapour pressure J Chem Thermod

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

[toxnet-2] "NaCl Other Chemical/Physical Properties"^{[dead link]}

[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.

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