Sodium, Na

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Sodium, Na
Categories:	Metal; Nonferrous Metal; Pure Element
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Physical Properties	Original Value	Comments

Density	0.971 g/cc
Vapor Pressure	1.43e-10 bar @Temperature 100 °C
	1.81e-7 bar @Temperature 200 °C
	0.0000185 bar @Temperature 300 °C
	0.00519 bar @Temperature 500 °C
	0.140 bar @Temperature 700 °C
	1.20 bar @Temperature 900 °C
	2.00 bar @Temperature 980 °C
	5.10 bar @Temperature 1120 °C
	10.0 bar @Temperature 1230 °C
	20.0 bar @Temperature 1370 °C

Chemical Properties	Original Value	Comments
Atomic Mass	22.989771	1995
Atomic Number	11
Thermal Neutron Cross Section	0.54 barns/atom
X-ray Absorption Edge	11.478 Å	K
Critical Temperature	2300 °C
Electrode Potential	-2.71 V
Electronegativity	0.93	Pauling
Ionic Radius	0.970 Å	Crystal Ionic Radius for Valence +1
Electrochemical Equivalent	0.86 g/A/h

Mechanical Properties	Original Value	Comments
Hardness, Vickers	0.10
Tensile Strength, Ultimate	<= 10.0 MPa

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.00000433 ohm-cm @Temperature 0.000 °C
	0.00000477 ohm-cm @Temperature 20.0 °C
	0.00000623 ohm-cm @Temperature 77.0 °C
	0.00000686 ohm-cm @Temperature 98.0 °C	solid
	0.00000943 ohm-cm @Temperature 98.0 °C	liquid
	0.00002214 ohm-cm @Temperature 400 °C
	0.00004635 ohm-cm @Temperature 800 °C
	0.00007376 ohm-cm @Temperature 1100 °C
Magnetic Susceptibility	5.1e-7	cgs/g

Thermal Properties	Original Value	Comments
Heat of Fusion	114 J/g
Heat of Vaporization	4208 J/g
CTE, linear	71.0 µm/m-°C @Temperature 20.0 - 100 °C
Specific Heat Capacity	1.235 J/g-°C
Thermal Conductivity	135 W/m-K
Melting Point	97.8 °C
Boiling Point	883 °C

Component Elements Properties	Original Value	Comments
Sodium, Na	100 %

Descriptive Properties
CAS Number	7440-23-5

References for this datasheet.

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