Silicon optical (mono crystalline) windows, 1… 7440-21-3

Name: Silicon optical (mono crystalline) windows, 170 mm dia, 25 mm thick, 99.999%
Brand: Vaqora Chemicals
SKU: VQ-018093

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

Silicon optical (mono crystalline) windows, 170 mm dia, 25 mm thick (CAS 7440-21-3) is an optical window offered by Vaqora Chemicals at a purity of 99.999%. The compound has the formula Si, corresponding to a molecular weight of 28.09 g/mol. Systematically, it is named silicon.

It is supplied 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. The GHS classification uses the signal word “Danger”, so appropriate gloves, eye protection and ventilation are recommended.

Typical applications include optical windows, IR and UV optics, coated substrates and electronics and thin films. Buyers come mainly from academic and industrial research and electronics and semiconductors.

We offer Silicon optical (mono crystalline) windows, 170 mm dia, 25 mm thick in 1 pc and 10 pc packs with a batch-specific COA, and ship to customers 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, 170 mm dia, 25 mm thick, 99.999%
Catalogue No.	VQ-018093
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

VQ-016875

Silicon nanopowder, APS 130 nm, 99.5%

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

VQ-017373

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

CAS: 7440-21-3
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, 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

Silicon optical (mono crystalline) windows, 30 mm dia, 15 mm thick, 99.999%

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

VQ-018096

All 21 products with CAS 7440-21-3 →

Frequently asked questions

What is the CAS number of Silicon optical (mono crystalline) windows, 170 mm dia, 25 mm thick, 99.999%?

The CAS Registry Number of Silicon optical (mono crystalline) windows, 170 mm dia, 25 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, 170 mm dia, 25 mm thick, 99.999%?

Silicon optical (mono crystalline) windows, 170 mm dia, 25 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, 170 mm dia, 25 mm thick, 99.999% can I order?

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

Yes. Every lot of Silicon optical (mono crystalline) windows, 170 mm dia, 25 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, 170 mm dia, 25 mm thick, 99.999% be shipped internationally?

Yes. Silicon optical (mono crystalline) windows, 170 mm dia, 25 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.