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ChemicalBook >> CAS DataBase List >> Silicon

Silicon

Silicon price.
  • $30 - $4023.65
  • Product name: Silicon
  • CAS: 7440-21-3
  • MF: H4Si
  • MW: 32.12
  • EINECS:231-130-8
  • MDL Number:MFCD00085311
  • Synonyms:PERCHLORATEE;Silicon Optical Window, 25.4mm (1.0 in.) dia. x 1mm (0.04 in.) thick, Uncoated, Clear Aperture 85%, Surface Finsh 40/20;Silicon standard solution, 1 mg/ml Si in 2% NaOH;Silicon plate, 6.35mm (0.25 in.) thick;Silicon Optical Window, 25.4mm (1.0 in.) dia. x 2mm (0.08 in.) thick, Uncoated, Clear Aperture 85%, Surface Finsh 40/20;Silicon rod, 2.5cm (0.98 in.) dia.;Silicon granular, Virgin poly fines;Silicon rod, 5.08cm (2.0 in.) dia.
150 prices
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Brand
  • A2B
  • ProChem
  • Sigma-Aldrich
  • Strem Chemicals
  • TRC
Package
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  • 2kg
  • ManufacturerA2B
  • Product numberAB78970
  • Product descriptionSilicon min.97%
  • Packaging25g
  • Price$340
  • Updated2021-12-16
  • Buy
  • ManufacturerProChem
  • Product number3181
  • Product descriptionSilicon,powder,-100Mesh 99.9%
  • Packaging100gm
  • Price$30
  • Updated2021-12-16
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  • ManufacturerProChem
  • Product number3181
  • Product descriptionSilicon,powder,-100Mesh 99.9%
  • Packaging500gm
  • Price$110
  • Updated2021-12-16
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  • ManufacturerSigma-Aldrich
  • Product number1.70236
  • Product descriptionSilicon standard solution traceable to SRM from NIST SiO? in NaOH 0.5 mol/l 1000 mg/l Si Certipur?
  • Packaging100mL
  • Price$47.5
  • Updated2025-07-31
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  • ManufacturerSigma-Aldrich
  • Product number1.12310
  • Product descriptionSilicon standard solution traceable to SRM from NIST acidic, (NH?)?SiF? in H?O 1000 mg/l Si Certipur?
  • Packaging100ml
  • Price$47.7
  • Updated2025-07-31
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  • ManufacturerSigma-Aldrich
  • Product number215619
  • Product descriptionSilicon powder, 325 mesh, 99% trace metals basis
  • Packaging50g
  • Price$56.2
  • Updated2025-07-31
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  • ManufacturerSigma-Aldrich
  • Product number1.12310
  • Product descriptionSilicon standard solution traceable to SRM from NIST acidic, (NH?)?SiF? in H?O 1000 mg/l Si Certipur?
  • Packaging500ml
  • Price$64.1
  • Updated2025-07-31
  • Buy
  • ManufacturerSigma-Aldrich
  • Product number1.70236
  • Product descriptionSilicon standard solution traceable to SRM from NIST SiO? in NaOH 0.5 mol/l 1000 mg/l Si Certipur?
  • Packaging500mL
  • Price$67.2
  • Updated2025-07-31
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  • ManufacturerSigma-Aldrich
  • Product number647799
  • Product descriptionSilicon wafer (single side polished), <111>, N-type, contains phosphorus as dopant, diam. × thickness 2 in. × 0.5 mm
  • Packaging1ea
  • Price$111.15
  • Updated2025-07-31
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  • ManufacturerSigma-Aldrich
  • Product numberNIST57B
  • Product descriptionSilicon metal NIST?SRM?57b
  • Packaging40g
  • Price$2040
  • Updated2025-07-31
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  • ManufacturerSigma-Aldrich
  • Product numberGF64686998
  • Product descriptionSilicon rod, 100mm, diameter 2.0mm, crystalline, 100%
  • Packaging1ea
  • Price$1620
  • Updated2025-07-31
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  • ManufacturerSigma-Aldrich
  • Product numberGF75683212
  • Product descriptionSilicon sheet, 14x14mm, thickness 1.0mm, single crystal, -100, 100%
  • Packaging5ea
  • Price$1760
  • Updated2023-06-20
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  • ManufacturerSigma-Aldrich
  • Product numberGF84840004
  • Product descriptionSilicon sheet, 14x14mm, thickness 1.0mm, single crystal, -111, 100%
  • Packaging5ea
  • Price$1790
  • Updated2025-07-31
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  • ManufacturerSigma-Aldrich
  • Product numberGF44956187
  • Product descriptionSilicon rod, 25 mm diameter, length 150 mm, purity 99.999%
  • Packaging2ea
  • Price$1980
  • Updated2023-01-07
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  • ManufacturerSigma-Aldrich
  • Product numberGF92543317
  • Product descriptionSilicon powder, 150 max. part. size (micron), weight 2000 g, purity 97.5%
  • Packaging1ea
  • Price$2020
  • Updated2025-07-31
  • Buy
  • ManufacturerSigma-Aldrich
  • Product numberGF16363391
  • Product descriptionSilicon rod, 10mm, diameter 2.0mm, crystalline, 100%
  • Packaging5ea
  • Price$2030
  • Updated2025-07-31
  • Buy
Manufacturer Product number Product description Packaging Price Updated Buy
A2B AB78970 Silicon min.97% 25g $340 2021-12-16 Buy
ProChem 3181 Silicon,powder,-100Mesh 99.9% 100gm $30 2021-12-16 Buy
ProChem 3181 Silicon,powder,-100Mesh 99.9% 500gm $110 2021-12-16 Buy
Sigma-Aldrich 1.70236 Silicon standard solution traceable to SRM from NIST SiO? in NaOH 0.5 mol/l 1000 mg/l Si Certipur? 100mL $47.5 2025-07-31 Buy
Sigma-Aldrich 1.12310 Silicon standard solution traceable to SRM from NIST acidic, (NH?)?SiF? in H?O 1000 mg/l Si Certipur? 100ml $47.7 2025-07-31 Buy
Sigma-Aldrich 215619 Silicon powder, 325 mesh, 99% trace metals basis 50g $56.2 2025-07-31 Buy
Sigma-Aldrich 1.12310 Silicon standard solution traceable to SRM from NIST acidic, (NH?)?SiF? in H?O 1000 mg/l Si Certipur? 500ml $64.1 2025-07-31 Buy
Sigma-Aldrich 1.70236 Silicon standard solution traceable to SRM from NIST SiO? in NaOH 0.5 mol/l 1000 mg/l Si Certipur? 500mL $67.2 2025-07-31 Buy
Sigma-Aldrich 647799 Silicon wafer (single side polished), <111>, N-type, contains phosphorus as dopant, diam. × thickness 2 in. × 0.5 mm 1ea $111.15 2025-07-31 Buy
Sigma-Aldrich NIST57B Silicon metal NIST?SRM?57b 40g $2040 2025-07-31 Buy
Sigma-Aldrich GF64686998 Silicon rod, 100mm, diameter 2.0mm, crystalline, 100% 1ea $1620 2025-07-31 Buy
Sigma-Aldrich GF75683212 Silicon sheet, 14x14mm, thickness 1.0mm, single crystal, -100, 100% 5ea $1760 2023-06-20 Buy
Sigma-Aldrich GF84840004 Silicon sheet, 14x14mm, thickness 1.0mm, single crystal, -111, 100% 5ea $1790 2025-07-31 Buy
Sigma-Aldrich GF44956187 Silicon rod, 25 mm diameter, length 150 mm, purity 99.999% 2ea $1980 2023-01-07 Buy
Sigma-Aldrich GF92543317 Silicon powder, 150 max. part. size (micron), weight 2000 g, purity 97.5% 1ea $2020 2025-07-31 Buy
Sigma-Aldrich GF16363391 Silicon rod, 10mm, diameter 2.0mm, crystalline, 100% 5ea $2030 2025-07-31 Buy

Properties

Melting point :1410 °C(lit.)
Boiling point :2355 °C(lit.)
Density :2.33 g/mL at 25 °C(lit.)
bulk density :0.07-0.08g/cm3
storage temp. :Flammables area
solubility :insoluble in H2O, acid solutions; soluble in alkaline solutions
form :powder
Specific Gravity :2.42
color :White
PH :13.5 (H2O, 20°C)
Odor :Odorless
Water Solubility :INSOLUBLE
semiconductor properties :<111>P-type
Crystal Structure :Cubic, Diamond Structure - Space Group Fd3m
Sensitive :Air Sensitive
Merck :13,8565
Exposure limits :ACGIH: TWA 2.5 mg/m3
NIOSH: IDLH 250 mg/m3; TWA 2.5 mg/m3 Dielectric constant :2.4(Ambient)
Stability :Stable. Fine powder is highly flammable. Incompatible with oxidizing agents, bases, carbonates, alkali metals, lead and aluminium oxides, halogens, carbides, formic acid.
InChIKey :BLRPTPMANUNPDV-UHFFFAOYSA-N
CAS DataBase Reference :7440-21-3(CAS DataBase Reference)
NIST Chemistry Reference :Silicon(7440-21-3)
EPA Substance Registry System :Silicon (7440-21-3)

Safety Information

Symbol(GHS): GHS hazard pictograms
Signal word: Warning
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H228 Flammable solid Flammable solids Category 1
Category 2
Danger
Warning
GHS hazard pictograms P210, P240,P241, P280, P370+P378
Precautionary statements:
P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking.
P240 Ground/bond container and receiving equipment.
P241 Use explosion-proof electrical/ventilating/lighting/…/equipment.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P370+P378 In case of fire: Use … for extinction.

Description

Silicon sputtering target in ultra high purity silicon is used in the semiconductor industry as a result of its semiconducting properties. It is used as an alloying element in the manufacture of certain alloys (e.g. ferrosilicon, an alloy of iron and silicon which is used to introduce silicon into steel and cast iron). It is also used in the manufacture of glass and computer microchips.

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