Silicon optical (mono crystalline) windows, 9… 7440-21-3

Name: Silicon optical (mono crystalline) windows, 90 mm dia, 20 mm thick, 99.999%
Brand: Vaqora Chemicals
SKU: VQ-018099

About Silicon optical (mono crystalline) windows, 90 mm dia, 20 mm thick, 99.999%

Listed under CAS 7440-21-3, Silicon optical (mono crystalline) windows, 90 mm dia, 20 mm thick is an optical window available from Vaqora Chemicals, specified at 99.999% purity. Its molecular formula is Si and its molecular weight is 28.09 g/mol. The IUPAC name is silicon.

The product is provided as a crystalline solid. Reported physical data include a melting point of 1414 °C and a density of 2.329 gm/cc. Store sealed in a dry, well-ventilated location away from incompatible materials. It carries the GHS signal word “Danger” with 2 hazard statements. Review the Safety Data Sheet before use.

It is commonly used for optical windows, IR and UV optics, coated substrates and electronics and thin films. It is used across academic and industrial research and electronics and semiconductors.

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

Typical applications

Optical windows
IR & UV optics
Coated substrates
Electronics & thin films

Industries

Specifications & identifiers

Chemical identifiers
Product name	Silicon optical (mono crystalline) windows, 90 mm dia, 20 mm thick, 99.999%
Catalogue No.	VQ-018099
CAS Number	7440-21-3
IUPAC name	silicon
Molecular formula	Si
Molecular weight	28.09 g/mol
Exact mass	27.9769
Purity / assay	99.999%
HSN code	9002
InChIKey	XUIMIQQOPSSXEZ-UHFFFAOYSA-N
SMILES	[Si]
PubChem CID	5461123

Physical properties
Physical form	Crystalline
Melting point	1414 °C
Density	2.329 gm/cc
H-bond donors / acceptors	0 / 0
TPSA	0 Å²

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

Silicon granules 3-6 mm 99.99%

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

All 21 products with CAS 7440-21-3 →

Frequently asked questions

What is the CAS number of Silicon optical (mono crystalline) windows, 90 mm dia, 20 mm thick, 99.999%?

The CAS Registry Number of Silicon optical (mono crystalline) windows, 90 mm dia, 20 mm thick, 99.999% is 7440-21-3. It is also known as Optical grade mono crystalline silicon circular blank.

What is the molecular formula and molecular weight of Silicon optical (mono crystalline) windows, 90 mm dia, 20 mm thick, 99.999%?

Silicon optical (mono crystalline) windows, 90 mm dia, 20 mm thick, 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 optical (mono crystalline) windows, 90 mm dia, 20 mm thick, 99.999% can I order?

We supply Silicon optical (mono crystalline) windows, 90 mm dia, 20 mm thick, 99.999% in (99.999%) grade, in 1 pc, 10 pc packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Silicon optical (mono crystalline) windows, 90 mm dia, 20 mm thick, 99.999%?

Yes. Every lot of Silicon optical (mono crystalline) windows, 90 mm dia, 20 mm thick, 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 optical (mono crystalline) windows, 90 mm dia, 20 mm thick, 99.999% be shipped internationally?

Yes. Silicon optical (mono crystalline) windows, 90 mm dia, 20 mm thick, 99.999% is classified as hazardous, 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.