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Formula: Si
Form: Powder
Material: Silicon
CAS Number: 7440-21-3
Commodity: Metals
Hazard Pictogram:
GHS02, GHS07
Silicon powder is widely used in scientific research and industrial applications, primarily in semiconductor manufacturing, energy storage systems, and materials science. Its high surface area and reactivity make it ideal for use in microelectronics, photovoltaic cell fabrication, and as an anode material in lithium-ion and solid-state batteries. Silicon powder's ability to form robust compounds enhances its suitability for creating advanced composites and thermal barrier coatings, providing improved durability and efficiency in high-temperature environments. Ongoing research continues to explore its potential to improve the performance, cycle life, and sustainability of energy storage technologies, as well as in the development of nano-structured materials for electronic components.
Flammable
Health hazard/Hazardous to the ozone layer
Tolerances
Powder
| Mean Particle Size | Nominal | |
|---|---|---|
| Minimum Particle Size | Nominal | |
| Maximum Particle Size | Nominal | |
| Maximum Particle Size | Nominal | |
| Particle Size D10 | Nominal | |
| Particle Size D50 | Nominal | |
| Particle Size D90 | Nominal |
Material Properties for Metals
Atomic Properties
| Element | Value |
|---|---|
| Atomic number | 14 |
| Crystal structure | Diamond |
| Electronic structure | Ne 3s² 3p² |
| Valences shown | 4 |
| Atomic weight( amu ) | 28.0855 |
| Thermal neutron absorption cross-section( Barns ) | 0.16 |
| Photo-electric work function( eV ) | 4.2 |
| Natural isotope distribution( Mass No./% ) | 30/ 3.10 |
| Natural isotope distribution( Mass No./% ) | 29/ 4.67 |
| Natural isotope distribution( Mass No./% ) | 28/ 92.23 |
| Atomic radius - Goldschmidt( nm ) | 0.117 |
| Ionisation potential( No./eV ) | 5/ 167 |
| Ionisation potential( No./eV ) | 1/ 8.15 |
| Ionisation potential( No./eV ) | 2/ 16.3 |
| Ionisation potential( No./eV ) | 3/ 33.5 |
| Ionisation potential( No./eV ) | 4/ 45.1 |
| Ionisation potential( No./eV ) | 6/ 205 |
Mechanical Properties
| Element | Value |
|---|---|
| Hardness - Mohs | 7 |
| Material condition | Polycrystalline |
| Poisson's ratio | 0.42 |
| Bulk modulus( GPa ) | 100 |
| Tensile modulus( GPa ) | 113 |
Electrical Properties
| Element | Value |
|---|---|
| Electrical resistivity( µOhmcm ) | 23 x 10¹⁰@20@20°C |
| Thermal emf against Pt (cold 0C - hot 100C)( mV ) | -41.56 |
Physical Properties
| Element | Value |
|---|---|
| Boiling point( C ) | 2355 |
| Density( gcm⁻³ ) | 2.34@20°C |
Thermal Properties
| Element | Value |
|---|---|
| Melting point( C ) | 1410 |
| Latent heat of evaporation( J g⁻¹ ) | 13700 |
| Latent heat of fusion( J g⁻¹ ) | 1650 |
| Specific heat( J K⁻¹ kg⁻¹ ) | 703@25°C |
| Thermal conductivity( W m⁻¹ K⁻¹ ) | 80-150@0-100°C |
| Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) | 4.7-7.6@0-100°C |
Other Customers Purchased
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Zirconium Hydride Powder Formula: ZrH₂
Percentage Purity: 99.5%
Maximum Particle Size: 150µm
Weight: 500g
CAS Number: 7704-99-6
UOM Code: 057-083-47
eachStarting at $218.50
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Zirconium Powder Formula: Zr
Percentage Purity: 99.2%
Maximum Particle Size: 45µm
Weight: 2000g
CAS Number: 7440-67-7
UOM Code: 151-149-03
eachStarting at $179.80
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Zirconium/Aluminum Alloy Precursor Powder (Zr90/Al10) Formula: Zr90/Al10
Mean Particle Size: 45µm
Weight: 50g
Type: Alloy Pre-cursor
UOM Code: 113-318-63
eachStarting at $489.56
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Zirconium Carbide Powder Formula: ZrC
Percentage Purity: 99.5%
Maximum Particle Size: 45µm
Weight: 50g
CAS Number: 12070-14-3
UOM Code: 428-605-16
eachStarting at $245.10
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each
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Silicon Foil Formula: Si
Percentage Purity: 99.999%
Thickness: 1mm
Length 1: 25mm
Length 2: 25mm
Structure: Polycrystalline
CAS Number: 7440-21-3
UOM Code: 203-112-54
eachStarting at $219.33
Discounts applied for volume purchases
