myTechnical Documents
Dynasylan® A is a tetraethyl orthosilicate. Used as a crosslinker in silicone rubber systems and as drying agent in sealing compositions.
Details
CAS
78-10-4
Recommended for
Applications
Producer
Supplier
Chemical Composition
Tetraethylorthosilicate
Advantages
- improved chemical and thermal stability
- improved mechanical properties
Other Applications
crosslinkers in silicone rubber systems
drying agents in sealing compositions
Handling
Dynasylan® A is a ready source of silicic acid for many applications. Silicic acid in 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 fibres can be coated with a very thin SiO2 layer in order to improve chemical and thermal stability and mechanical properties.
Technical data
| Quantity | Value | Unit | Comment |
|---|---|---|---|
| miscibility | |||
| Appearance Properties | |||
| Appearance | |||
| Physical state | Fluid | ||
| Physical Properties | |||
| Viscosity | 0.75 | cP | DIN53015 ;20°C |
| Density | 0.93 - 0.94 | g/ml | DIN51757 ;20°C |
| SiO2 | 28.3 - 29.1 | % | AN-SAA0851 |
| Thermal Properties | |||
| Boling point | >168 | ºC | DIN 51751 |
| flash point | 45 | ºC | DIN 51758 |
| Chemical Properties | |||
| Shelf Life | 12 | month | |