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Sodium chloride (data page)

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This page provides supplementary chemical data on sodium chloride.

Material safety data sheet

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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

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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

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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 		26.02 J/(mol·K)
Std enthalpy change
of vaporization, ΔvapHo 		130.05 @ T-Boiling 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,
Sosolid 		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,
Soliquid 		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,
Sogas 		229.79 J/(mol·K)
Heat capacity, cp ? J/(mol·K)

Density data of aqueous solutions

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Water–NaCl phase diagram
Properties of water–NaCl mixtures [3]
NaCl, wt% Teq, °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; Teq is the equilibrium temperature between two phases: ice/liquid solution for Teq < 0–0.1 °C and NaCl/liquid solution for Teq above 0.1 °C.

Spectral data

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UV-Vis
λmax ? 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:
  

References

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