Triethoxypropylsilane
Synonym(s):Triethoxypropylsilane
- CAS NO.：2550-02-9
- Empirical Formula: C9H22O3Si
- Molecular Weight: 206.35
- MDL number: MFCD00026756
- EINECS: 219-842-7
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-01-13 11:22:28
What is Triethoxypropylsilane?
Chemical properties
Colorless liquid
The Uses of Triethoxypropylsilane
It is an important material in sol-gel production, it provides a hydrophobic surface treatment for inorganic powders or filter materials and it is one of the catalyst components for polyolefin production with Ziegler-Natta catalyst. It is mainly used as construction waterproofing agent/protective agent, inorganic filler surface treatment agent, and pigment dispersant.
The Uses of Triethoxypropylsilane
n-Propyltriethoxysilane was used for surface modification of titania particles and nanotubes. Propyltriethoxysilane may be used as an organosilicon precursor to prepare O2 sensor platform. They were also used to coat mesoporous silica tablets by the sol-gel technique.
General Description
n-Propyltriethoxysilane (PTES) is a mesoporous hyperbranched organosilane that can be used as a grafting agent. It can be used in the functionalization of a variety of substrates by attaching the silane groups with the surface atoms.
Flammability and Explosibility
Flammable
Properties of Triethoxypropylsilane
| Boiling point: | 179-180 °C(lit.) |
| Density | 0.892 g/mL at 25 °C(lit.) |
| vapor pressure | 0.005-7910Pa at 20-25℃ |
| refractive index | n |
| Flash point: | 135 °F |
| storage temp. | under inert gas (nitrogen or Argon) at 2-8°C |
| form | liquid |
| color | Colorless to Almost colorless |
| Specific Gravity | 0.891 |
| Water Solubility | Not miscible or difficult to mix in water. Soluble in alcohol, aromatic and aliphatic hydrocarbons. |
| Sensitive | Moisture Sensitive |
| Hydrolytic Sensitivity | 7: reacts slowly with moisture/water |
| BRN | 1748158 |
| CAS DataBase Reference | 2550-02-9(CAS DataBase Reference) |
| NIST Chemistry Reference | Silane, triethoxypropyl-(2550-02-9) |
| EPA Substance Registry System | Silane, triethoxypropyl- (2550-02-9) |
Safety information for Triethoxypropylsilane
| Signal word | Warning |
| Pictogram(s) |
 Flame Flammables GHS02  Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H226:Flammable liquids H315:Skin corrosion/irritation |
| Precautionary Statement Codes |
P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P233:Keep container tightly closed. P240:Ground/bond container and receiving equipment. P241:Use explosion-proof electrical/ventilating/lighting/…/equipment. P242:Use only non-sparking tools. P303+P361+P353:IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. |
Computed Descriptors for Triethoxypropylsilane
| InChIKey | NBXZNTLFQLUFES-UHFFFAOYSA-N |
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