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Characteristics	Cloroless transparent liquid
Colour Value (Pt-co)	<30
Content	>99%
Silica content, by wt as SiO2	28%
Acidity, max. (as HCI)	<0.01
Specific Gravity at 20℃	0.929-0.936

Types: 28% 32% 40% | Package: 200L | Appearance: Cloroless transparent liquid | Colour Value (Pt-co): <30 | Content: >99% | Silica content, by wt as SiO2: 28% | Acidity, max. (as HCI): <0.01 | Specific Gravity at 20℃: 0.929-0.936

Molecular Formula: C8H20O4Si
Molecular Weight: 208.33
Hazard Symbols: Xn
UN Number: UN 1292 3/PG 3
WGKGermany: 1
PackingGroup: III
HS Code: 2920 90 70

Product name:Tetraethyl orthosilicate
Synonyms:SILICON TETRAETHOXIDE;TEOS;TETRAETHOXYSILANE;TETRAETHYL SILICATE; TETRAETHYL ORTHOSILICATE;ORTHOSILICIC ACID TETRAETHYL ESTER;ETHYL-O-SILICATE;ETHYL ORTHOSILICATE
CAS:78-10-4
Formula:C8H20O4Si
Molecular weight:208.33

Package:180kg/drum
Supply capacity:5000mt per year
Melting point:-77 °C
Boiling point:168 °C(lit.)
Density:0.94
Vapor density:7.2 (vs air)
Vapor pressure:<1 mm Hg ( 20 °C)
Refractive index:n20/D 1.382(lit.)
flash point:116 °F
Storage:Flammables area
Water solubility:Hydrolysis
Freezing point:-77°C
Sensitivity:Moisture Sensitive
Merck:14,3851
BRN:1422225
Stability:Stable. Flammable. Incompatible with strong oxidizing agents, water, alkalies, mineral acids.

Chemical properties: ethyl silicate, also known as tetraethyl silicate, tetraethoxysilane. Colorless transparent liquid, with special odor. Water stability, water decomposition into ethanol and silicic acid, in the humid air turbidity, soluble in alcohol, ether and other organic solvents.

Appearance:colorless liquid
Color(APHA):<20
Proportion at 20°C(68°F):0.929-0.935
Silica:28%
Acidity(as HCl):<0.01
Ethano:<2%
Other content:0-5ppm
Viscosity( 20°C):0.97 cps.

Usage:
Paint, paint the adhesive; silicone rubber crosslinking agent; precision casting binder; ceramic materials, adhesives.

1. The electronics industry for insulating materials, but also for optical glass processing and coagulant
2. For precision casting, as the sand binder; with ethyl silicate treatment of metal surface can be anti-corrosion water. Ethyl silicate can be used to surface silicon infiltration, processing optical glass can improve the transmittance; fully hydrolyzed after the production of ultra-fine silica powder can be used in the manufacture of phosphor. Ethyl silicate is the raw material of silicone oil. Ethyl silicate can also be used in the manufacture of heat and chemical resistant coatings. In Japan, 90% of ethyl silicate used as anti-corrosion coating (zinc-rich paint) base.
3. Mainly used for chemical coatings and heat-resistant coatings, organic solvents and precision silicone adhesive. Completely hydrolyzed to produce ultra-fine silica powder, used in the manufacture of phosphor, can also be used as chemical reagents.
4. Tetraethoxysilane is mainly used in optical glass, chemical-resistant coating and heat-resistant coating and adhesive; modification of anticorrosive coating; crosslinking agent, binder, dehydrating agent; catalyst skeleton, high purity ultrafine dioxide Silicon manufacturing
5. Ethyl orthosilicate is mainly used for optical glass, chemical and heat-resistant coatings and adhesives; modified anti-corrosion coating; crosslinking agent, binder, dehydrating agent; catalyst skeleton, high purity ultrafine dioxide Silicon manufacturing.
6. Electronic industry with insulating materials, coatings, optical glass treatment agent, coagulant, organic synthesis, preparation of silicone solvent

Brief manufacture process:

By silicon tetrachloride and ethanol at room temperature and pressure derived esterification.