Other grades of this product :
| Tetrapropoxysilane Chemical Properties |
| Melting point | | Boiling point | 94 °C5 mm Hg(lit.) | | density | 0.916 g/mL at 25 °C(lit.) | | vapor density | >1 (vs air) | | vapor pressure | 0.26Pa at 25℃ | | refractive index | n20/D 1.4(lit.) | | Fp | 203 °F | | storage temp. | Inert atmosphere,Room Temperature | | form | liquid | | Specific Gravity | 0.916 | | color | Colorless to Almost colorless | | Water Solubility | 78mg/L at 20℃ | | Sensitive | Moisture Sensitive | | Hydrolytic Sensitivity | 7: reacts slowly with moisture/water | | BRN | 1706115 | | InChIKey | ZQZCOBSUOFHDEE-UHFFFAOYSA-N | | LogP | 3.4 at 20℃ | | CAS DataBase Reference | 682-01-9(CAS DataBase Reference) | | NIST Chemistry Reference | Tetrapropyl silicate(682-01-9) | | EPA Substance Registry System | Silicic acid (H4SiO4), tetrapropyl ester (682-01-9) |
| Hazard Codes | Xi | | Risk Statements | 36/37/38 | | Safety Statements | 26-36-37/39 | | RIDADR | 1993 | | WGK Germany | 3 | | F | 10-21 | | TSCA | Yes | | HazardClass | 8 | | PackingGroup | III | | HS Code | 29209090 |
| Tetrapropoxysilane Usage And Synthesis |
| Introduction | Tetrapropoxysilane (TPOS), [also called n-Propyl Silicate] is used as a cross-linking agent for silicon rubber, and as a modifying agent for organic and inorganic resins. The ethyl group of ethyl silicate is replaced by the N-propyl group, so the speed of hydrolysis is slower than ethyl silicate.
| | Applications |
- As an inorganic binder for refractory fillers and pigments, like precision investment castings.
- As a second backup casting coating. It cures faster than colloidal silica system.
- May be hydrolyzed to form silicon dioxide (silica).
- As a binder in zinc-rich (corrosion resistant) coating.
- As a starting material for sol-gel process.
- As a crosslinking agent for silicone sealant.
- As a drying agent in sealing compositions.
- As a chemical intermediate.
| | Chemical Properties | Colorless transparent liquid | | Flammability and Explosibility | Nonflammable |
| Tetrapropoxysilane Preparation Products And Raw materials |
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