Silicon powder, -325 mesh, 99.999%

Name: Silicon powder, -325 mesh, 99.999%
Brand: Vaqora Chemicals
SKU: VQ-016201

About Silicon powder, -325 mesh, 99.999%

Silicon powder, -325 mesh (CAS 7440-21-3) is a metal powder offered by Vaqora Chemicals (Synthesis grade) with a typical assay of 99.999%. With the molecular formula Si, it has a molar mass of 28.09 g/mol. Systematically, it is named silicon. Common synonyms include Silicon high purity.

The material typically appears as a grey to dark grey powder. Key physical data: a melting point of 1410 °C and a density of 2.33 g/mL at 25 °C. Store in a tightly closed container in a cool, dry and well-ventilated place. The GHS classification uses the signal word “Danger”, so appropriate gloves, eye protection and ventilation are recommended.

It is commonly used for powder metallurgy, additive manufacturing, chemical synthesis and organic synthesis. Buyers come mainly from academic and industrial research and metallurgy and mining.

Standard pack sizes are 10 g, 50 g, 1 kg and 5 kg, and every batch ships with a Certificate of Analysis (COA) and we export worldwide.

Typical applications

Powder metallurgy
Additive manufacturing
Chemical synthesis
Organic synthesis

Industries

Specifications & identifiers

Chemical identifiers
Product name	Silicon powder, -325 mesh, 99.999%
Catalogue No.	VQ-016201
CAS Number	7440-21-3
IUPAC name	silicon
Molecular formula	Si
Molecular weight	28.09 g/mol
Exact mass	27.9769
Grade	Synthesis
Purity / assay	99.999%
HSN code	28046900
InChIKey	XUIMIQQOPSSXEZ-UHFFFAOYSA-N
SMILES	[Si]
PubChem CID	5461123

Physical properties
Physical form	Powder
Appearance	Grey to dark grey powder
Melting point	1410 °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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CAS: 7440-21-3
Formula: Si
MW: 28.09 g/mol

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Silicon nanopowder, APS 130 nm, 99.5%

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Formula: Si
MW: 28.09 g/mol

VQ-017373

Silicon Nanopowder, APS 20-30 nm, 98%+

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Formula: Si
MW: 28.09 g/mol

VQ-017374

Silicon Nanopowder, APS 30-50 nm, 98%

CAS: 7440-21-3
Formula: Si
MW: 28.09 g/mol

VQ-017375

Silicon Nanopowder, APS 50-70 nm, 98%

CAS: 7440-21-3
Formula: Si
MW: 28.09 g/mol

VQ-017376

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

CAS: 7440-21-3
Formula: Si
MW: 28.09 g/mol

VQ-018093

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

CAS: 7440-21-3
Formula: Si
MW: 28.09 g/mol

VQ-018094

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

CAS: 7440-21-3
Formula: Si
MW: 28.09 g/mol

VQ-018095

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Frequently asked questions

What is the CAS number of Silicon powder, -325 mesh, 99.999%?

The CAS Registry Number of Silicon powder, -325 mesh, 99.999% is 7440-21-3. It is also known as Silicon high purity.

What is the molecular formula and molecular weight of Silicon powder, -325 mesh, 99.999%?

Silicon powder, -325 mesh, 99.999% 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, -325 mesh, 99.999% can I order?

We supply Silicon powder, -325 mesh, 99.999% in Synthesis (99.999%) grade, in 10 g, 50 g, 1 kg, 5 kg, 25 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Silicon powder, -325 mesh, 99.999%?

Yes. Every lot of Silicon powder, -325 mesh, 99.999% 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, -325 mesh, 99.999% be shipped internationally?

Yes. Silicon powder, -325 mesh, 99.999% 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.