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215619

Silicon

Name: Silicon
Brand: ALDRICH

powder, −325 mesh, 99% trace metals basis

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About This Item

Linear Formula:

CAS Number:

7440-21-3

Molecular Weight:

28.09

NACRES:

NA.23

PubChem Substance ID:

24852908

UNSPSC Code:

12141911

EC Number:

231-130-8

MDL number:

MFCD00085311

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Properties

Quality Level

100

assay

99% trace metals basis

form

powder

reaction suitability

core: silicon

greener alternative product characteristics

Design for Energy Efficiency
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particle size

−325 mesh

bp

2355 °C (lit.)

mp

1410 °C (lit.)

density

2.33 g/mL at 25 °C (lit.)

greener alternative category

Enabling

SMILES string

[Si]

InChI

1S/Si

InChI key

XUIMIQQOPSSXEZ-UHFFFAOYSA-N

Description

General description

Silicon powder is a fine, gray powder. This silicon powder has been passed through a 325-mesh screen, meaning that the particles are small enough to pass through a sieve with openings that are approximately 44 thousandths of an inch in diameter. Silicon is a chemical element and is a hard, brittle, metallic-gray solid that is highly resistant to chemical attack and has a high melting point. Silicon is the second most abundant element in the Earth’s crust and is found in a variety of minerals.

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Application

Silicon can be used as anode material in lithium-ion batteries.

It can be used to fabricate Al₂O₃-C refractories. The silicon powder generates β-Sialon whiskers which imparts high-temperature strength, slag resistance and thermal shock resistance of the refractories.

It can be incorporated into high-densitypolyethylene (HDPE) polymer composites. The addition of silicon powder enhancesthermal stability and thermal conductivity of composites.

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pictograms

GHS02

signalword

Warning

hcodes

H228

pcodes

P210 - P240 - P241 - P280 - P370 + P378

Hazard Classifications

Flam. Sol. 2

Storage Class

4.1B - Flammable solid hazardous materials

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

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Articles

Additive Manufacturing of Permanent Magnets

Permanent magnets are an essential technology for energy conversion. Motors and generators are used to convert energy between electrical and mechanical forms.

Self-Propagating Reactions Induced by Mechanical Alloying

An article concerning self-propagating reactions induced by mechanical alloying, presented by Sigma-Aldrich.com.

Silicides: Promising Thermoelectrics

Higher transition metal silicides are ideal for anisotropic thermoelectric conversion due to their Seebeck coefficient anisotropy and mechanical properties.

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Numerical simulation and fabrication of silicon sheet via spin casting.

Jaewoo Lee et al.

Journal of nanoscience and nanotechnology, 13(5), 3495-3499 (2013-07-19)

A spin-casting process for fabricating polycrystalline silicon sheets for use as solar cell wafers is proposed, and the parameters that control the sheet thickness are investigated. A numerical study of the fluidity of molten silicon indicates that the formation of

Thin film solar cells with Si nanocrystallites embedded in amorphous intrinsic layers by hot-wire chemical vapor deposition.

Seungil Park et al.

Journal of nanoscience and nanotechnology, 13(5), 3397-3402 (2013-07-19)

We investigated the thin film growths of hydrogenated silicon by hot-wire chemical vapor deposition with different flow rates of SiH4 and H2 mixture ambient and fabricated thin film solar cells by implementing the intrinsic layers to SiC/Si heterojunction p-i-n structures.

Structural characteristics of ternary In(x)Ga(1-x)As nanowires on Si (111) grown via Au-catalyzed VLS.

Jae Cheol Shin et al.

Journal of nanoscience and nanotechnology, 13(5), 3511-3514 (2013-07-19)

We have characterized the structural properties of the ternary In(x)Ga(1-x)As nanowires (NWs) grown on silicon (Si) substrates using metalorganic chemical vapor deposition (MOCVD). Au catalyzed vapor-liquid-solid (VLS) mode was used for the NW growth. The density of the In(x)Ga(1-x)As NW

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Global Trade Item Number

SKU	GTIN
215619-50G	04061838773913
215619-1KG	04061838773890
215619-250G	04061838773906