Ethyl silicate-48 is an ethoxysiloxane oligomer with about 10 of average Si-O-Si chain length. Ethylsilicate-48 is a mixture of tetraethoxysilane and polyethoxysiloxanes with a high content of silicon dioxide (SiO2) in the range of 47-48,5%. It is well soluble in toluene, benzene, ethyl alcohol and other solvents.
Ethylsilicate-48 is obtained from the reaction of silicon tetrachloride and ethyl alcohol.
Synonyms: Ethylsilicate 48, TEOS, ethyl silicate, Tetraethyl orthosilicate, tetraethyl silicate, Orthosilicic acid tetraethyl ester, Tetraethoxysilane, silicic acid (H4SiO4), tetraethyl ester, tetraethyl silicate
CAS. No: 78-10-4 EINECS 201-083-8 EC 201-083-8
Manufacture of paint and varnish coatings:
Polymer additive:
Chemical industry:
Metallurgy / Engineering:
Building sector:
Ceramic products manufacturing:
Textile industry:
Glass manufacturing:
Oil and gas production - for waterproofing works on oil and gas wells.
In medicine - as a binder in the manufacture of dental prostheses.
In the optical industry for the production of optical fiber materials, the enlightenment of optical glasses.
Jewelery: Component of self-curing compositions when casts of.
Store in original tightly closed container at temperature from -40°C up to +30°C. Store in a cool, dry, well-ventilated place. Protect from moisture and direct sunlight. Store away from heaters, oxidizers, strong acids, alkalis and other chemicals having alkaline reaction for example, ammonia, amines).
The guaranteed shelf life in original container is 12 months.
Storage over the date specified on the label does not necessarily mean the product is unusable. In case if store more please check the properties of product before use.
Metal drums with a capacity of 20 kg.
Metal drums with a capacity of 200 kg.
Ethyl silicate-48 is a low toxic, explosive, fire hazardous product. When carrying out work observe fire safety techniques.
Detailed instructions are given in the relevant product safety data sheet. It can be provided upon request.
| Parameter name and measure unit | Standard |
|---|---|
| Appearance | Colorless clear liquid with a specific odor |
| Color by Gardner scale, max | 1 |
| Chemical formula | SinOn*1(OC2H5)2n+2 (n≒10, in average) |
| Molecular weight (according to exclusion chromatography data) | 1,400 |
| Mass fraction of silicon dioxide,% | 47,0 – 48,5 |
| Mass fraction of tetraethoxysilane,% | 0,1 – 0,3 |
| Mass fraction of ethyl alcohol,%, max. | 6,0 |
| Density, at +25℃, g/cm3 | 1,135 – 1,150 |
| Viscosity, at +25℃, MPa*s | 18,00 – 24,00 |
| Acidity, %, max | 0,002 |
| Flash point (closed cup), ℃ | 30,7 |
| Refractive index at +20°C | 1,406 |