Silicon powder, max. particle size 45 μm, 99.… 7440-21-3

Name: Silicon powder, max. particle size 45 μm, 99.5%
Brand: Vaqora Chemicals
SKU: VQ-016206

About Silicon powder, max. particle size 45 μm, 99.5%

Silicon powder, max. particle size 45 μm (CAS 7440-21-3) is a metal powder offered by Vaqora Chemicals with a typical assay of 99.5%. Its molecular formula is Si and its molecular weight is 28.09 g/mol. Its systematic (IUPAC) name is silicon.

It is supplied as a silver to grey powder. Literature values give a melting point of 1410 °C and a boiling point of 2355 °C. Store in a tightly closed container in a cool, dry and well-ventilated place. Under GHS it is labelled “Danger”, so handle it with suitable PPE and consult the SDS.

Typical applications include powder metallurgy, additive manufacturing, chemical synthesis and organic synthesis. Our customers for this product work in academic and industrial research and metallurgy and mining.

Available in 25 g, 100 g, 4 x 25 kg and 200 g packs, Silicon powder, max. particle size 45 μm is dispatched with a Certificate of Analysis (COA) to destinations worldwide.

Typical applications

Powder metallurgy
Additive manufacturing
Chemical synthesis
Organic synthesis

Industries

Specifications & identifiers

Chemical identifiers
Product name	Silicon powder, max. particle size 45 μm, 99.5%
Catalogue No.	VQ-016206
CAS Number	7440-21-3
IUPAC name	silicon
Molecular formula	Si
Molecular weight	28.09 g/mol
Exact mass	27.9769
Purity / assay	99.5%
HSN code	28046900
InChIKey	XUIMIQQOPSSXEZ-UHFFFAOYSA-N
SMILES	[Si]
PubChem CID	5461123

Physical properties
Physical form	Powder
Appearance	Silver to grey powder
Melting point	1410 °C
Boiling point	2355 °C
Density	2.33 g/mL at 25 °C
H-bond donors / acceptors	0 / 0
TPSA	0 Å²
UN number	UN 1346

Safety & hazard information (GHS)

Flammable

Signal word: Danger

Hazard statements

H228Flammable solid
H320Causes eye irritation

Precautionary statements: P210, P240, P241, P264 + P265, P280, P305 + P351 + P338, P337 + P317, P370 + P378

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Other grades of CAS 7440-21-3

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MW: 28.09 g/mol

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VQ-017374

Silicon Nanopowder, APS 30-50 nm, 98%

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Formula: Si
MW: 28.09 g/mol

VQ-017375

Silicon Nanopowder, APS 50-70 nm, 98%

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Formula: Si
MW: 28.09 g/mol

VQ-017376

Silicon optical (mono crystalline) windows, 170 mm dia, 25 mm thick, 99.999%

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MW: 28.09 g/mol

VQ-018093

Silicon optical (mono crystalline) windows, 25 mm dia, 3 mm thick, 99.999%

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Formula: Si
MW: 28.09 g/mol

VQ-018094

Silicon optical (mono crystalline) windows, 30 mm dia, 10 mm thick, 99.999%

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Formula: Si
MW: 28.09 g/mol

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Frequently asked questions

What is the CAS number of Silicon powder, max. particle size 45 μm, 99.5%?

The CAS Registry Number of Silicon powder, max. particle size 45 μm, 99.5% is 7440-21-3.

What is the molecular formula and molecular weight of Silicon powder, max. particle size 45 μm, 99.5%?

Silicon powder, max. particle size 45 μm, 99.5% has the molecular formula Si and a molecular weight of 28.09 g/mol. Its IUPAC name is silicon.

Which grade and pack sizes of Silicon powder, max. particle size 45 μm, 99.5% can I order?

We supply Silicon powder, max. particle size 45 μm, 99.5% in (99.5%) grade, in 25 g, 100 g, 4 x 25 kg, 200 g, 1 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Silicon powder, max. particle size 45 μm, 99.5%?

Yes. Every lot of Silicon powder, max. particle size 45 μm, 99.5% is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Silicon powder, max. particle size 45 μm, 99.5% be shipped internationally?

Yes. Silicon powder, max. particle size 45 μm, 99.5% is classified as hazardous (UN 1346), so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.