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	n20/D 1.396(lit.)
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.