Silicon powder, crystalline, -325 mesh, 99.5% 7440-21-3

Name: Silicon powder, crystalline, -325 mesh, 99.5%
Brand: Vaqora Chemicals
SKU: VQ-016205

About Silicon powder, crystalline, -325 mesh, 99.5%

Listed under CAS 7440-21-3, Silicon powder, crystalline, -325 mesh is a metal powder available from Vaqora Chemicals, specified at 99.5% purity. Formula Si, molecular weight 28.09 g/mol. Its systematic (IUPAC) name is silicon.

It is supplied as a grey to dark grey powder. Key physical data: a melting point of 1410 °C and a boiling point of 2355 °C. Keep the container tightly sealed and store it in a cool, dry area. Under GHS it is labelled “Danger”, so handle it with suitable PPE and consult the SDS.

Key uses span powder metallurgy, additive manufacturing, chemical synthesis and organic synthesis. It is used across academic and industrial research and metallurgy and mining.

Available in 10 g, 100 g, 500 g and 5 x 1 kg packs, Silicon powder, crystalline, -325 mesh 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, crystalline, -325 mesh, 99.5%
Catalogue No.	VQ-016205
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	Grey to dark 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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CAS: 7440-21-3
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MW: 28.09 g/mol

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MW: 28.09 g/mol

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

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MW: 28.09 g/mol

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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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

All 21 products with CAS 7440-21-3 →

Frequently asked questions

What is the CAS number of Silicon powder, crystalline, -325 mesh, 99.5%?

The CAS Registry Number of Silicon powder, crystalline, -325 mesh, 99.5% is 7440-21-3.

What is the molecular formula and molecular weight of Silicon powder, crystalline, -325 mesh, 99.5%?

Silicon powder, crystalline, -325 mesh, 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, crystalline, -325 mesh, 99.5% can I order?

We supply Silicon powder, crystalline, -325 mesh, 99.5% in (99.5%) grade, in 10 g, 100 g, 500 g, 5 x 1 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Silicon powder, crystalline, -325 mesh, 99.5%?

Yes. Every lot of Silicon powder, crystalline, -325 mesh, 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, crystalline, -325 mesh, 99.5% be shipped internationally?

Yes. Silicon powder, crystalline, -325 mesh, 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.