Molekula
Tetraethyl orthosilicate
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 1999 · Certificate of Analysis with every batch
Tetraethyl orthosilicate is a versatile organosilicon compound primarily used as a crosslinking agent in silicone polymers and as a precursor for silica in sol-gel processes. It is also used to consolidate and weatherproof stone and masonry, in acid-proof mortars and heat-resistant coatings, in investment casting of high-melting alloys, and for silica deposition in semiconductor manufacturing. This chemical has the CAS number 78-10-4 and carries no signal word. Molekula supplies Tetraethyl orthosilicate from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
This substance is available from Molekula on enquiry. Full specification, Safety Data Sheet and Certificate of Analysis documentation are provided with your quotation once our team confirms the grade and pack size you need.
Overview
- SKU
- 90028421
- CAS Number
- 78-10-4
- IUPAC Name
- tetraethyl silicate
- EC Number
- 201-083-8
- Exact Mass
- 208.1131
- SMILES
- CCO[Si](OCC)(OCC)OCC
- InChIKey
- BOTDANWDWHJENH-UHFFFAOYSA-N
- InChI
- InChI=1S/C8H20O4Si/c1-5-9-13(10-6-2,11-7-3)12-8-4/h5-8H2,1-4H3
- PubChem CID
- 6517
Synonyms
- Dynasil A
- Ethyl orthosilicate
- ETHYL SILICATE
- Silicon ethoxide
- Silicon tetraethoxide
- Silikan L
- TEOS
- Tetraethoxysilane
- Tetraethoxysilicon
- Tetraethyl silicate
Literature values
Published physical properties of the substance, not batch specifications.
- Appearance
- Colorless liquid
- Odour
- Sharp, ester-like odor
- Melting Point
- -82.5 °C
- Boiling Point
- 168.8 °C
- Density
- 0.93 (relative, water = 1)
- Solubility (other solvents)
- Soluble in ether
- Vapour Pressure
- 200 Pa at 20 °C
- Refractive Index
- 1.3818
Source: PubChem CID 6517 (HSDB, ICSC)
See all 3 other grades of CAS 78-10-4 →
Frequently asked questions
What is Tetraethyl orthosilicate used for?
Tetraethyl orthosilicate is primarily used as a cross-linking agent in silicone polymers and as a precursor for silica in sol-gel processes.
What are the chemical formula and molecular weight of this product?
The chemical formula is C8H20O4Si and the molecular weight is 208.33 g/mol.
How should Tetraethyl orthosilicate be stored?
It should be stored in a cool, dry, well-ventilated area in a tightly closed container, away from moisture and incompatible substances.
What grade of Tetraethyl orthosilicate is available?
Please contact our sales team or check the product page on our website for the specific purity grades currently in stock.
Can Molekula supply Tetraethyl orthosilicate in bulk?
Yes, we can supply this product in bulk quantities to meet your specific manufacturing or research requirements.
What documentation comes with the order?
Every order is supplied with a Certificate of Analysis (CoA) and a Safety Data Sheet (SDS).
Related products
Molekula has supplied fine chemicals and biochemicals since 1999, and its facilities are ISO 9001:2015 and ISO 14001:2015 certified. Every dispatched batch is logged with a batch number and matched to a Certificate of Analysis, and Safety Data Sheets are available in five languages.