Tetraethoxysilane, TEOS, Dynasil A, Z-6697, KBE-04, Silicate TES 28, D1000, Silane, CAS No.: 78-10-4

Product Description:

1. HENGDA-Si28 is the ethyl ester of orthosilicic acid.
2. In the literature, it is frequently also referred to under the name TEOS (tetraethoxysilane). HENGDA-Si28 is a colorless, low-viscosity liquid with a SiO2?content of 28.5%. Use requires acid- or alkali-catalyzed hydrolysis. Since all 4 ethoxy groups are able to participate in this reaction, HENGDA-Si28 is regarded as tetrafunctional. Hydrolysis leads to silanol groups which, in a subsequent condensation reaction, form very stable siloxane bonds (-Si-O-Si-). Condensation starts before hydrolysis is complete. During storage of these hydrolysates condensation, continues until a gel is formed. The rate of gelation depends on the concentration of water.
3. HENGDA-Si28 is a ready source of silicic acid for many applications. Silicic acid is usually obtained by hydrolysis, or thermally by condensation at elevated temperature. The resulting silicic acid bonds well to many inorganic substrates and can be deposited in situ in a controlled manner. The surfaces of glass, metals, pigments, fillers, and synthetic fibers can be coated with a very thin SiO2?layer in order to improve chemical and thermal stability and mechanical properties.

Property:

Equivalent Name:

DYNASIL A, Z-6697, KBE-04, SILICATE, TES 28, TEOS

Applications:

1. Be hydrolyzed to form silicon dioxide (silica).
2. Crosslinkers in silicone rubber systems.
3. Drying agents in sealing compositions.
4. Inorganic binder for refractory fillers and pigments.
5. Coating material for pigments, fibers, and other surfaces.
6. Chemical intermediate.

Reactivity:

HENGDA-Si28 can react with water.

Storage and shelf life:

1. HENGDA-Si28?is supplied in 25 kg,200 kg drums, and 1000kg IBC containers.
2. HENGDA-Si28 must be stored with the exclusion of moisture.
3. In the unopened container, HENGDA-Si28 has a shelf life of min.12 months from delivery.

Our Advantages:

1. The First Manufacturer of silane coupling agents in China since 1965. We have the most production experience in silane coupling agents.
2. Professional in Producing? High-Quality Silane Coupling Agents.
3. Safety facilities such as DCS automatic remote control operating system, SIS safety instrumentation system; environmental treatment facilities such as waste gas collection and treatment system, and sewage treatment system.
4. Well-trusted by world customers covering over 57 countries and regions.

Contact information:

Linda Sun | 孙永玲

Mobile/WeChat/Whatsapp: +86 13296392597

Email:?[email protected]