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215619

Sigma-Aldrich

Silicon

powder, −325 mesh, 99% trace metals basis

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About This Item

Linear Formula:
Si
CAS Number:
Molecular Weight:
28.09
EC Number:
MDL number:
UNSPSC Code:
12141911
PubChem Substance ID:
NACRES:
NA.23

Assay

99% trace metals basis

form

powder

particle size

−325 mesh

bp

2355 °C (lit.)

mp

1410 °C (lit.)

density

2.33 g/mL at 25 °C (lit.)

SMILES string

[Si]

InChI

1S/Si

InChI key

XUIMIQQOPSSXEZ-UHFFFAOYSA-N

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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.

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.

Pictograms

Flame

Signal Word

Warning

Hazard Statements

Hazard Classifications

Flam. Sol. 2

Storage Class Code

4.1B - Flammable solid hazardous materials

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Mariya Nazish Memon et al.
JPMA. The Journal of the Pakistan Medical Association, 62(12), 1329-1332 (2013-07-23)
To evaluate the outcome of nasolacrimal intubation as a primary treatment of congenital nasolacrimal duct obstruction (NLDO) in children up to 4 years of age. During the 3 years period from July 2008 to June 2011, in the Paediatric Ophthalmology
Min Joon Huang et al.
Journal of nanoscience and nanotechnology, 13(6), 3810-3817 (2013-07-19)
In this work, we demonstrated a silicon nanowire (SiNW) biosensing platform capable of simultaneously identifying different Dengue serotypes on a single sensing chip. Four peptide nucleic acids (PNAs), specific to each Dengue serotypes (DENV-1 to DENV-4), were spotted on different
Chengyong Li et al.
Journal of nanoscience and nanotechnology, 13(3), 2272-2275 (2013-06-13)
Mesoporous Si-C-O fibers were fabricated by air activation of a kind of carbon-rich SiC-C fibers at 600 degrees C. The SiC-C fibers were prepared from the hybrid precursor of polycarbosilane and pitch through melt-spinning, air curing and pyrolysis in nitrogen.
Bo-Soon Kim et al.
Journal of nanoscience and nanotechnology, 13(5), 3622-3626 (2013-07-19)
A subwavelength structure (SWS) was formed via a simple chemical wet etching using a gold (Au) catalyst. Single nano-sized Au particles were fabricated by metallic self-aggregation. The deposition and thermal annealing of the thin metallic film were carried out. Thermal
Tzu-Hsuan Tsai et al.
Journal of the Air & Waste Management Association (1995), 63(5), 521-527 (2013-06-22)
The growing demand for silicon solar cells in the global market has greatly increased the amount of silicon sawing waste produced each year. Recycling kerf Si and SiC from sawing waste is an economical method to reduce this waste. This

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