Zinc Sulfide, ZnS, Wurtzite
Categories: Ceramic; Sulfide/Chalcogenide; Other Engineering Material; Semiconductor
Key Words: Chalcogenide; Semiconductor
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Physical PropertiesMetricEnglishComments
Density 4.10 g/cc0.148 lb/in³
a Lattice Constant 3.814 Å3.814 Å
c Lattice Constant 6.2576 Å6.2576 Å
Formula Units/Cell (Z) 22
Molecular Weight 97.46 g/mol97.46 g/mol
 
Mechanical PropertiesMetricEnglishComments
Knoop Microhardness 250250kg/mm²; crystal structure not reported
Hardness, Mohs 3.5 - 4.03.5 - 4.0
Modulus of Elasticity 75.0 GPa10900 ksiCrystal structure not specified.
Flexural Strength 103 MPa14900 psi4-pt. test; Crystal structure not specified.
Poissons Ratio 0.270.27Crystal structure not specified.
Shear Modulus 29.5 GPa4280 ksiCalculated
 
Electrical PropertiesMetricEnglishComments
Magnetic Susceptibility -0.0000250-0.0000250cm^3/mol
Band Gap 3.67 eV3.67 eV
 
Thermal PropertiesMetricEnglishComments
Heat of Fusion 390 J/g168 BTU/lbCrystal structure not specified.
CTE, linear 7.60 µm/m-°C
@Temperature 20.0 °C		4.22 µin/in-°F
@Temperature 68.0 °F		Crystal structure not specified.
Thermal Conductivity 46.0 W/m-K319 BTU-in/hr-ft²-°F
Melting Point 1827 °C3321 °F
Heat of Formation -206 kJ/mol-206 kJ/mol
 
Optical PropertiesMetricEnglishComments
Refractive Index 2.3782.378ω, Na
 2.356
@Wavelength 589.3 nm		2.356
@Wavelength 589.3 nm		η, Na
IR Transmittance 72 %72 %peak. absorption coefficient 0.1 at 8 µm/ 0.4 at 12 µm. Crystal structure not specified.
 
Descriptive Properties
CAS Number1314-98-3
ColorWhite
Crystal StructureHexagonalWurtzite (Zincite) Structure - Space Group P 63mc

References for this datasheet.

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