StructureAminopropyl-triethoxy silane
CAS No. 919-30-2
EC No. 213-048-4
Synonyms 1-Propanamine, 3-(triethoxysilyl)-; 3-Aminopropyl-triethoxysilane; 3-Triethoxysilylpropylamine; gamma-aminopropyl triethoxy silane

Aminopropyl-triethoxy silane

3-Aminopropyl-triethoxy silane is a bifunctional silane possessing a reactive primary amino group and hydrolyzable ethoxysilyl groups.

The dual nature of its reactivity allows 3-Aminopropyltriethoxysilane to act as adhesive promoter between inorganic materials (i.e. glass, metals, fillers) and organic polymers (i.e. thermosets, thermoplastics, elastomers).

3-Aminopropyltriethoxysilane can also work as surface modifier.

3-Aminopropyltriethoxysilane is a colorless to slightly yellowish low-viscosity liquid with an amine-like odor. It is soluble in alcohols, and aliphatic or aromatic hydrocarbons.

In addition 3-Aminopropyltriethoxysilane is completely and immediately soluble in water (with reaction).

3-Aminopropyltriethoxysilane is an important additive for many applications, like:.

In the various applications of 3-Aminopropyl methyl diethoxy silane we can identify its usage as as a primer or additive and for chemical modification in sealants and adhesives.

Other application of 3-Aminopropyltriethoxysilane are:

  • Glass fiber/glass fabric composites: as a finish or size constituent
  • Mineral fiber insulating materials and abrasives: as an additive to phenolic resin binders
  • Foundry resins: as an additive to phenolic, furan and melamine resins
  • Mineral-filled polymers (composites) or HFFR cables: for pretreatment of fillers and pigments
  • Paints and coatings: as an additive and primer for improving adhesion to the substrate.
  • As a primer for glass and metal


Packaging & Shelf Life:

  • Drums à 190 kg net


Under proper storage conditions the shelf life is 12 months.


Health & Safety:

Detailed information on the product described can be found in our relevant Health and Safety Information (Material Safety Data Sheet).​