CAS 7440-21-3
:Silicon
Description:
Silicon, with the CAS number 7440-21-3, is a metalloid element that plays a crucial role in various industries, particularly in electronics and materials science. It is characterized by its shiny, metallic luster and brittle nature in its crystalline form. Silicon has a high melting point and is a poor conductor of electricity at room temperature, but its conductivity increases significantly when doped with impurities, making it a fundamental semiconductor material. It is abundant in the Earth's crust, primarily found in the form of silicates and silicon dioxide. Silicon is essential in the production of glass, ceramics, and concrete, and it is a key component in the manufacture of solar cells and computer chips. Additionally, silicon exhibits a tetravalent bonding capability, allowing it to form stable covalent bonds with other elements, which is vital for creating various silicon-based compounds. Its versatility and unique properties make silicon a cornerstone of modern technology and materials engineering.
Formula:Si
InChI:InChI=1S/Si
InChI key:InChIKey=XUIMIQQOPSSXEZ-UHFFFAOYSA-N
SMILES:[Si]
Synonyms:- 4FY
- 6Pw-A1
- AgroSilicio
- Aldrich 267414-25G
- Biosilicon
- CZ-N Polished wafer
- Feb 450D
- Gko 3516A
- Hexsil
- Hgh 600
- Jt 02
- KTC (element)
- Kdb 0.1
- Kdb 0.5
- Kdb 10
- Kdb 20
- Kef 100
- Kr 1
- M-Si 600
- Metasilicon 325A
- PSi-C 2
- Phc 20
- Polysilicon
- S 308
- Saf 184
- Sharp 80W
- Si 006031
- Si 100
- Si 1059
- Si 500443
- Si 500444
- Si 500452
- Si(100) wafer
- Si-S 10μm
- Sicomill 4C-P
- Sicomill E 4
- Sicomill Grade 2
- Sie 17Pb
- Sie 20Pb
- Sie 23Pb
- Silgrain
- Silgrain E-Si 400
- Silgrain HQ
- Silgrain Standard
- Sili-K
- Silicio, Con Un Contenido En Silicio Superior Al 99.99 Por Ciento En Peso
- Silicium
- Silicon 100
- Silicon 200
- Silicon 600
- Silicon Powder
- Silicon element
- Silicon metal
- Silso
- T 2 (filler)
- Wafer World 119
- Wfp 6005
- a-Si 11
- a-Si 12
- a-Si 13
- ψ-C 2
- See more synonyms
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Silicon rod, 2.5cm (0.98in) dia, 99.999% (metals basis)
CAS:<p>This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Sci</p>Purity:99.999%Silicon powder, crystalline, -100+200 mesh, 99.99% (metals basis)
CAS:<p>This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Sci</p>Purity:99.99%Silicon plate, 6.35mm (0.25in) thick, 99.999% (metals basis)
CAS:<p>This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Sci</p>Formula:SiPurity:99.999%Molecular weight:28.09Silicon sputtering target, 50.8mm (2.0in) dia x 3.18mm (0.125in) thick, 99.999% (metals basis)
CAS:<p>Magnetron sputtering source</p>Formula:SiPurity:99.999%Color and Shape:Sputtering target, 50.8mm (2.0in) diameter x 3.18mm (0.125in) thick., Dark grayMolecular weight:28.09Silicon slugs, 9.5mm (0.375 in.) dia. x 9.5mm (0.375 in.) length, 99.9999% (metals basis)
CAS:<p>This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Sci</p>Formula:SiPurity:99.9999%Molecular weight:28.09Silicon powder, crystalline, APS 100nm, 99%, Plasma Synthesized
CAS:<p>This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Sci</p>Formula:SiPurity:99%Molecular weight:28.09Silicon powder, crystalline, -325 mesh, 99.5% (metals basis)
CAS:<p>This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Sci</p>Formula:SiPurity:99.5%Molecular weight:28.09Silicon powder, crystalline, -100+325 mesh, 99.999% (metals basis)
CAS:<p>This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Sci</p>Formula:SiPurity:99.999%Color and Shape:Brown, PowderMolecular weight:28.09Silicon rod, 0.828cm (0.326in) dia, 99.999% (metals basis)
CAS:<p>This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Sci</p>Formula:SiPurity:99.999%Molecular weight:28.09Silicon rod, polycrystalline, unpolished, 1.6cm (0.6in) dia, 99.9999% (metals basis)
CAS:<p>This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Sci</p>Purity:99.9999%Silicon powder, crystalline, APS ∣<50nm, 98%, Laser synthesized from vapor phase
CAS:<p>Form: S.A. 70 to 100m2/g</p>Formula:SiPurity:98%Color and Shape:Brown-yellow, PowderMolecular weight:28.09Silicon lump, 0.1-2.5cm (0.04-1.0in), 99.9999% (metals basis)
CAS:<p>This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Sci</p>Formula:SiPurity:99.9999%Molecular weight:28.09Silicon plate, 12.5mm (0.5in) thick, 99.999% (metals basis)
CAS:<p>This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Sci</p>Formula:SiPurity:99.999%Molecular weight:28.09Silicon lump, 15cm (5.9in) & down, 99.999+% (metals basis)
CAS:<p>This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Sci</p>Formula:SiPurity:99.999+%Color and Shape:Dark brown, Lump, ≤15cm (5.9in).Molecular weight:28.09Silicon powder, crystalline, -100 mesh, 99.9% (metals basis)
CAS:<p>This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Sci</p>Formula:SiPurity:99.9%Molecular weight:28.09Silicon granular, virgin poly fines, 99.999% (metals basis)
CAS:<p>This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Sci</p>Formula:SiPurity:99.999%Color and Shape:Chunks to powder, GrayMolecular weight:28.09Silicon powder, crystalline, -325 mesh, 99.999% (metals basis)
CAS:<p>This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Sci</p>Formula:SiPurity:99.999%Molecular weight:28.09Silicon lump, 10cm (3.9in) & down, 98.4% (metals basis)
CAS:<p>This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Sci</p>Formula:SiPurity:98.4%Color and Shape:Silver to grey, Lump or chunksMolecular weight:28.09Silicon powder, APS 1-5 micron, 99.9% (metals basis)
CAS:<p>This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Sci</p>Formula:SiPurity:99.9%Molecular weight:28.09Silicon powder, -325 mesh, 99.999% (metals basis)
CAS:<p>This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Sci</p>Formula:SiPurity:99.999%Color and Shape:Powder, -325 meshMolecular weight:28.09
