Nitrogen, N 2

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Nitrogen, N₂
Categories:	Fluid; Pure Element
Key Words:	Nitrogen, N2
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Physical Properties	Metric	English	Comments

Density	0.001145 g/cc	0.00004137 lb/in³	Gas
Molecular Weight	28.013 g/mol	28.013 g/mol

Chemical Properties	Metric	English	Comments
Atomic Mass	14.0067	14.0067	1995
Atomic Number	7	7
X-ray Absorption Edge	30.99 Å	30.99 Å	K
Critical Pressure	33.9000 bar	25427.1 torr
Critical Temperature	-146.94 °C	-232.49 °F
Critical Molar Volume	90.0 cm³/mol	5.49 in³/mol
Electronegativity	3.04	3.04	Pauling
Ionic Radius	0.130 Å	0.130 Å	Crystal Ionic Radius for Valence +5
	0.160 Å	0.160 Å	Crystal Ionic Radius for Valence +3
	0.250 Å	0.250 Å	Crystal Ionic Radius for Valence +1
	1.71 Å	1.71 Å	Crystal Ionic Radius for Valence -3

Thermal Properties	Metric	English	Comments
Heat of Fusion	25.35 J/g	10.90 BTU/lb
Heat of Vaporization	198.8 J/g	85.54 BTU/lb	At Boiling Point
Specific Heat Capacity	1.039 J/g-°C	0.2483 BTU/lb-°F
Thermal Conductivity	0.00980 W/m-K @Pressure 0.100 MPa, Temperature -173 °C	0.0680 BTU-in/hr-ft²-°F @Pressure 14.5 psi, Temperature -280 °F	gas
	0.0187 W/m-K @Pressure 0.100 MPa, Temperature -73.1 °C	0.130 BTU-in/hr-ft²-°F @Pressure 14.5 psi, Temperature -99.7 °F	gas
	0.0260 W/m-K @Pressure 0.100 MPa, Temperature 26.9 °C	0.180 BTU-in/hr-ft²-°F @Pressure 14.5 psi, Temperature 80.3 °F	gas
	0.0323 W/m-K @Pressure 0.100 MPa, Temperature 127 °C	0.224 BTU-in/hr-ft²-°F @Pressure 14.5 psi, Temperature 260 °F	gas
	0.0383 W/m-K @Pressure 0.100 MPa, Temperature 227 °C	0.266 BTU-in/hr-ft²-°F @Pressure 14.5 psi, Temperature 440 °F	gas
	0.0440 W/m-K @Pressure 0.100 MPa, Temperature 327 °C	0.305 BTU-in/hr-ft²-°F @Pressure 14.5 psi, Temperature 620 °F	gas
Melting Point	-210 °C	-346 °F
Boiling Point	-195.79 °C	-320.42 °F
Heat of Formation	0.000 kJ/mol	0.000 kJ/mol	Gas

Optical Properties	Metric	English	Comments
Refractive Index	1.19876 @Temperature -196 °C, Wavelength 578 nm	1.19876 @Temperature -321 °F, Wavelength 578 nm

Component Elements Properties	Metric	English	Comments
Nitrogen, N	100 %	100 %

Descriptive Properties
Appearance	Colorless Gas
CAS Number	7727-37-9

References for this datasheet.

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