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	Metric	English	Comments

Density	2.17 g/cc	0.0784 lb/in³
a Lattice Constant	5.6402 Å	5.6402 Å
Formula Units/Cell (Z)	4	4
Molecular Weight	58.443 g/mol	58.443 g/mol

Chemical Properties	Metric	English	Comments
Molar Volume	28 cc/mol	28 cc/mol

Mechanical Properties	Metric	English	Comments
Hardness, Mohs	2.0	2.0
Compressive Strength	27.0 MPa	3920 psi

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

Thermal Properties	Metric	English	Comments
Heat of Fusion	481.8 J/g	207.3 BTU/lb
CTE, linear	40.0 µm/m-°C	22.2 µin/in-°F
Specific Heat Capacity	0.849 - 0.900 J/g-°C	0.203 - 0.215 BTU/lb-°F
Thermal Conductivity	3.13 - 3.87 W/m-K	21.7 - 26.9 BTU-in/hr-ft²-°F
Melting Point	800.7 °C	1473 °F
Boiling Point	1465 °C	2669 °F

Optical Properties	Metric	English	Comments
Refractive Index	1.544 @Wavelength 589.3 nm	1.544 @Wavelength 589.3 nm	η, Na

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

References for this datasheet.

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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EINOR0761 / 3893

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