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Ensinger PEI

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Argon, Ar
Categories: Fluid; Pure Element

Material Notes: CAS Number: 7440-37-1

Physical Form: Colorless Gas

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Physical PropertiesOriginal ValueComments
Density 0.001633 g/ccGas
 
Chemical PropertiesOriginal ValueComments
Atomic Mass 39.9481995
Atomic Number 18
X-ray Absorption Edge 3.87068 ÅK
 43.192 ÅLI
 50.39 ÅLII
 50.803 ÅLIII
Critical Temperature -122.28 °C
Critical Molar Volume 75.0 cm³/mol
Ionic Radius 1.54 ÅCrystal Ionic Radius for Valence +1
 
Thermal PropertiesOriginal ValueComments
Heat of Fusion 29.54 J/g
Heat of Vaporization 161.0 J/gAt Boiling Point
Specific Heat Capacity 0.520 J/g-°C
Thermal Conductivity 0.0102 W/m-K
@Pressure 0.100 MPa,
Temperature -113 °C
 0.0125 W/m-K
@Pressure 0.100 MPa,
Temperature -73.1 °C
 0.0148 W/m-K
@Pressure 0.100 MPa,
Temperature -33.1 °C
 0.0158 W/m-K
@Pressure 0.100 MPa,
Temperature -13.1 °C
 0.0169 W/m-K
@Pressure 0.100 MPa,
Temperature 6.85 °C
 0.0179 W/m-K
@Pressure 0.100 MPa,
Temperature 26.9 °C
 0.0189 W/m-K
@Pressure 0.100 MPa,
Temperature 46.9 °C
 0.0217 W/m-K
@Pressure 0.100 MPa,
Temperature 107 °C
 0.1324 W/m-K
@Pressure 0.100 MPa,
Temperature -188 °C
Melting Point -189.35 °C
Boiling Point -185.85 °C
Heat of Formation 0.000 kJ/molGas
 
Optical PropertiesOriginal ValueComments
Refractive Index 1.2312
@Temperature -188 °C,
Wavelength 589 nm
 
Component Elements PropertiesOriginal ValueComments
Argon, Ar 100 %
 
Descriptive Properties
AppearanceColorless Gas
CAS Number7440-37-1
SolubilitySlightly Soluble in H2O

References for this datasheet.

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