TETRAETHOXYSILANE
CAS 78-10-4
Investment Casting · Ceramic Mould Binder · Corrosion-resistant Coating
- Mass fraction of main substance, %, min.
- 98,5
- Density, g/cm3
- 0,930 - 0,940
- Mass fraction of chloride ion, %, max.
- 0,02
- Mass fraction of ethanol, %, max.
- 0,42
Technical Specifications
| Parameter | Value | Method / unit |
|---|---|---|
| Appearance | Transparent liquid. Mechanical impurities resulting from metal packaging are permitted | — |
| Mass fraction of main substance, %, min. | 98,5 | % |
| Density, g/cm3 | 0,930 - 0,940 | g/cm3 |
| Mass fraction of chloride ion, %, max. | 0,02 | % |
| Mass fraction of ethanol, %, max. | 0,42 | % |
Detailed application areas
For preparing binder solutions in the manufacture of ceramic moulds in investment casting; as a binder component in heat- and chemical/atmospheric-resistant coatings and other areas, where, after hydrolysis in alkaline media, drying or calcination, a hard, durable material is required that is insoluble in water, resistant to high temperatures and shows no corrosive effect; in medicine as a binder in the manufacture of dental prostheses; in construction for impregnating wood to increase its resistance to bacterial attack; in the chemical industry for the production of reactive silicon dioxide and ethylsiloxane fluids; in the optical industry for the production of fibre-optic materials; in the production of high-purity silicon.
Use Cases
- Investment Casting
- Ceramic Mould Binder
- Corrosion-resistant Coating
- Heat-resistant Coating
- Dental Applications
- Refractory Binder
Packaging & storage
Packaging
Special stainless steel rail tank cars, aluminium rail tank cars, polyethylene barrels.
Storage
Tetraethoxysilane is stored in enclosed warehouses away from heating equipment and out of direct sunlight.
Transport
By rail and road transport.
Shelf Life
12 months from the date of manufacture
GHS Hazard Code
3353
Documents
Technical data sheet (TDS)
Review the recorded specifications, packaging and storage information.
View technical data sheet ↗Safety & lot documents
Request the current SDS and the certificate of analysis (CoA) for the lot you are evaluating.
Regulatory and compliance
KORKİMYA supply assurance
Stock in Türkiye
Current availability is confirmed by product and lot with your quote.
KKDİK registered
Every catalog product is KKDİK registered for Türkiye.
CoA for every lot
Verify technical values against the lot's certificate of analysis.
TL invoicing
Turkish lira invoicing is available for domestic purchases.
Payment terms
Discuss terms for your quantity and supply plan when requesting a quote.
Request Sample
Product Information
TETRAETHOXYSILANE (Si(C2H5O)4) is an industrial product in the silicon chemicals category, used in Investment Casting, Ceramic Mould Binder. Typical specifications: Appearance: Transparent liquid. Mechanical impurities resulting from metal packaging are permitted; Mass fraction of main substance, %, min.: 98,5; Density, g/cm3: 0,930 - 0,940. KORKİMYA supplies TETRAETHOXYSILANE in Special stainless steel rail tank cars, aluminium rail tank cars, polyethylene barrels.. Shelf life: 12 months from the date of manufacture.
For preparing binder solutions in the manufacture of ceramic moulds in investment casting; as a binder component in heat- and chemical/atmospheric-resistant coatings and other areas, where, after hydrolysis in alkaline media, drying or calcination, a hard, durable material is required that is insoluble in water, resistant to high temperatures and shows no corrosive effect; in medicine as a binder in the manufacture of dental prostheses; in construction for impregnating wood to increase its resistance to bacterial attack; in the chemical industry for the production of reactive silicon dioxide and ethylsiloxane fluids; in the optical industry for the production of fibre-optic materials; in the production of high-purity silicon.
- Formula
- Si(C2H5O)4
- CAS
- 78-10-4
- UN No
- 1292
- TN-VED Code
- 2920 90 700 0
- Toxicity Class
- IV
- Hazard Code
- 3353
- Packing Group
- 3
- Category
- SILICON CHEMICALS
Synonyms
Frequently asked questions
What is tetraethoxysilane (TEOS) and what is it used for?
Tetraethoxysilane (TEOS, tetraethyl orthosilicate; CAS 78-10-4, formula Si(C2H5O)4, main substance min 98.5%) is a silicate binder intermediate. It is used in ceramic mould binder solutions for investment casting, in heat- and corrosion-resistant coatings, in dental prosthesis manufacture, and in the production of fibre-optic materials and high-purity silicon.
In what packaging is tetraethoxysilane supplied, and is it ex-stock?
It is supplied in polyethylene barrels and in stainless steel and aluminium rail tank cars; it is stored in enclosed warehouses away from heating equipment and out of direct sunlight, with a shelf life of 12 months from manufacture. KORKİMYA offers ex-stock delivery and fast shipping, shortening lead times compared with importing from China.
Is tetraethoxysilane KKDİK-registered and is a Turkish SDS provided?
Yes. KORKİMYA supplies tetraethoxysilane as KKDİK-registered and provides a Turkish Safety Data Sheet (SDS) with every shipment. It ships under UN 1292, and a certificate of analysis (CoA) and technical data sheet (TDS) are available on request.
How can I get a sample and a quote for tetraethoxysilane?
Just contact KORKİMYA for a tetraethoxysilane quote and a sample. We invoice in TRY, prepare an offer based on your casting or coating volume, and ship quickly from stock.
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Last updated: 04/10/2026
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