Sodium Chloride, NaCl (Halite)

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Sodium Chloride, NaCl (Halite)
Categories:	Ceramic; Halide
Material Notes:	Colorless cubic crystals. Critical relative humidity for stability is 76%. Crystallization Pressure for C/C_S = 2 is 554 atm at 0°C. Crystallization Pressure for C/C_S = 2 is 654 atm at 50°C.Crystallization Pressure for C/C_S = 10 is 1845 atm at 0°C. Crystallization Pressure for C/C_S = 10 is 2190 atm at 50°C.Crystallization Pressure for C/C_S = 50 is 3135 atm at 0°C. Crystallization Pressure for C/C_S = 50 is 3737 atm at 50°C. Property values are typical of naturally occurring Halite (NaCl). Actual property values will vary from sample to sample.
Key Words:	NaCl, Rock Salt
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Physical Properties	Original Value	Comments

Density	2.17 g/cc
a Lattice Constant	5.6402 Å
Formula Units/Cell (Z)	4
Molecular Weight	58.443 g/mol

Chemical Properties	Original Value	Comments
Molar Volume	28 cc/mol

Mechanical Properties	Original Value	Comments
Hardness, Mohs	2.0
Compressive Strength	27.0 MPa

Electrical Properties	Original Value	Comments
Electrical Resistivity	1e+05 - 1.00e+6 ohm-cm
Magnetic Susceptibility	-0.0000302	cm^3/mol

Thermal Properties	Original Value	Comments
Heat of Fusion	481.8 J/g
CTE, linear	40.0 µm/m-°C
Specific Heat Capacity	0.849 - 0.900 J/g-°C
Thermal Conductivity	3.13 - 3.87 W/m-K
Melting Point	800.7 °C
Boiling Point	1465 °C

Optical Properties	Original Value	Comments
Refractive Index	1.544 @Wavelength 589.3 nm	η, Na

Descriptive Properties
CAS Number	7647-14-5
Crystal Structure	Cubic	Rock salt

References for this datasheet.

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