Tetraethyl orthosilicate, 98%

Name: Tetraethyl orthosilicate, 98%
Brand: Vaqora Chemicals
SKU: VQ-011147

About Tetraethyl orthosilicate, 98%

Listed under CAS 78-10-4, Tetraethyl orthosilicate is an organosilicon compound available from Vaqora Chemicals in Synthesis grade at a purity of 98%. Formula C8H20O4Si, molecular weight 208.33 g/mol. Systematically, it is named tetraethyl silicate. Common synonyms include Orthosilicic acid tetraethyl ester and Silicon tetraethoxide.

It is supplied as a colourless liquid. Key physical data: a boiling point of 1689 °C. Store in a cool, well-ventilated place, away from sources of ignition, with the container tightly sealed. It carries the GHS signal word “Warning” with 4 hazard statements. Review the Safety Data Sheet before use.

It is commonly used for polymer and resin production, paints, coatings and inks and electronics and thin films. It is used across pharmaceutical manufacturing, academic and industrial research and electronics and semiconductors.

We offer Tetraethyl orthosilicate in 250 mL, 500 mL, 1 L and 220 kg packs with a batch-specific COA, and ship to customers worldwide.

Typical applications

Polymer & resin production
Paints, coatings & inks
Electronics & thin films

Industries

Specifications & identifiers

Chemical identifiers
Product name	Tetraethyl orthosilicate, 98%
Catalogue No.	VQ-011147
CAS Number	78-10-4
IUPAC name	tetraethyl silicate
Molecular formula	C₈H₂₀O₄Si
Molecular weight	208.33 g/mol
Exact mass	208.1131
Grade	Synthesis
Purity / assay	98%
HSN code	29209099
InChIKey	BOTDANWDWHJENH-UHFFFAOYSA-N
SMILES	CCO[Si](OCC)(OCC)OCC
PubChem CID	6517

Physical properties
Physical form	Liquid
Appearance	Colourless liquid
Boiling point	1689 °C
H-bond donors / acceptors	0 / 4
TPSA	36.9 Å²
UN number	UN 1292
Synonyms	Orthosilicic acid tetraethyl ester, Silicon tetraethoxide, TEOS, Tetraethoxysilane, Dynasil A, Silicon ethoxide, Silikan L, Ethyl orthosilicate, Etylu krzemian, Silane, tetraethoxy-, Tetraethylorthosilicate, Silicic acid, tetraethyl ester

Safety & hazard information (GHS)

Flammable

Harmful / irritant

Signal word: Warning

Hazard statements

H226Flammable liquid and vapor
H319Causes serious eye irritation
H332Harmful if inhaled
H335May cause respiratory irritation

Precautionary statements: P210, P233, P240, P241, P242, P243, P261, P264 + P265, P271, P280, P303 + P361 + P353, P304 + P340, P305 + P351 + P338, P317, P319, P337 + P317, P370 + P378, P403 + P233, P403 + P235, P405, P501

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 78-10-4

Synthesis

Ethyl silicate

CAS: 78-10-4
Formula: C₈H₂₀O₄Si
MW: 208.33 g/mol

VQ-011120

Synthesis

Tetra ethoxy silane, 98%

CAS: 78-10-4
Formula: C₈H₂₀O₄Si
MW: 208.33 g/mol

VQ-011146

Puriss

Tetraethyl orthosilicate, 99.999%

CAS: 78-10-4
Formula: C₈H₂₀O₄Si
MW: 208.33 g/mol

VQ-011149

Tetraethyl orthosilicate, 99%

CAS: 78-10-4
Formula: C₈H₂₀O₄Si
MW: 208.33 g/mol

VQ-011148

Frequently asked questions

What is the CAS number of Tetraethyl orthosilicate, 98%?

The CAS Registry Number of Tetraethyl orthosilicate, 98% is 78-10-4. It is also known as Orthosilicic acid tetraethyl ester, Silicon tetraethoxide, TEOS.

What is the molecular formula and molecular weight of Tetraethyl orthosilicate, 98%?

Tetraethyl orthosilicate, 98% has the molecular formula C8H20O4Si and a molecular weight of 208.33 g/mol. Its IUPAC name is tetraethyl silicate.

Which grade and pack sizes of Tetraethyl orthosilicate, 98% can I order?

We supply Tetraethyl orthosilicate, 98% in Synthesis (98%) grade, in 250 mL, 500 mL, 1 L, 220 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Tetraethyl orthosilicate, 98%?

Yes. Every lot of Tetraethyl orthosilicate, 98% 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 Tetraethyl orthosilicate, 98% be shipped internationally?

Yes. Tetraethyl orthosilicate, 98% is classified as hazardous (UN 1292), 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.