myTechnical Documents
Dynasylan® 40 is a ethyl silicate with a silicon dioxide content of approximately 40 - 42 % upon complete hydrolysis. It is formed in the presence of water from tetraethyl silicate (Si[OEt]4) by partial hydrolysis of the ethoxy groups to hydroxyl groups and subsequent condensation with formation of siloxane bonds (SiOSi). Used in adhesives and sealants.
Details
CAS
68412-37-3
Product Type
Recommended for
Industry
Producer
Supplier
Chemical Composition
Ethyl silicate
Advantages
- low viscosity
Other Applications
crosslinker component in cold-curing silicone rubber systems
binder, especially as a Dynasylan® 40 hydrolysates for molds used e.g. in the precision foundry industry
hardening component in dentistry for impression materials and as binder for embedding material
Handling
Dynasylan® 40 is listed in EINECS/ELINCS, AICS, DSL/NDSL, PICCS, TSCA, IECS, ENCS and ECL.
Technical data
| Quantity | Value | Unit | Comment |
|---|---|---|---|
| miscibility | |||
| Appearance Properties | |||
| Appearance | Colorless | ||
| Physical state | Fluid | ||
| Physical Properties | |||
| SiO2 | 40 - 42 | % | AN-SAA0851 |
| Viscosity | 5.0 | cP | DIN53015 ;20°C |
| Density | 1.050 - 1.070 | g/ml | DIN51757 ;20°C |
| Thermal Properties | |||
| flash point | >62 | ºC | DIN51755 |
| Chemical Properties | |||
| Shelf Life | 12 | month | |