myTechnical Documents
SILBOND® 40 is a concentrated form for obtaining usable silica. It is partially hydrolyzed mixture of monomers, dimers, trimers, higher polymers and cyclic polysilicates. Average -Si-O-Si- chain length is about five.
Details
CAS
11099-06-2
Product Type
Applications
Producer
Supplier
Chemical Composition
Ethyl polysilicate
Other Applications
used as an intermediate towards less concentrated, more highly hydrolyzed binders for a variety of end uses
these binders are used for inorganic zinc rich coatings, investment casting molds, cores and ceramic shapes and coatings
Storage
Stored unopened and under proper conditions, the shelf life is expected to be a minimum of one (1) year.
Handling
It is hydrolyzed in water and miscible with organic solvents.
Technical data
| Quantity | Value | Unit | Comment |
|---|---|---|---|
| Appearance Properties | |||
| Color | <30 | َApha | |
| Appearance | |||
| Physical state | Fluid | ||
| Physical Properties | |||
| SiO2 | >40 | % | |
| Vapor pressure | 21 | mm-Hg | at 10 °C |
| Specific Gravity | 1.055 - 1.065 | 20°C | |
| Viscosity | 5.2 | cP | 25°C |
| Density | 1.058 | g/ml | 20°C |
| Molecular weight | 744 | g/mol | |
| Thermal Properties | |||
| Auto-ignition temperature | 362.77 | ºC | for ethyl alcohol |
| Thermal Expansion | 0.00096 | µm/m-°C | at 20°C |
| flash point | 27.22 | ºC | Tag Closed Cup |
| Melting point | -90 | ºC | |
| Boling point | 78 | ºC | at 1atm |
| Chemical Properties | |||
| Shelf Life | >12 | month | |
| Acidity | <0.001 | wt% | as HCl |
| Solubility | |||
| Solubility | Organic solvents | ||