Silane APTES (3-aminopropyltriethoxysilane) is a bifunctional organosilane containing a reactive primary amino group and hydrolyzable ethoxy silane groups. The dual reactivity enables chemical bonding with inorganic substrates such as glass, metals, and mineral fillers, as well as interaction with organic polymers including thermosets, thermoplastics, and elastomers.
It is commonly used as an adhesion promoter, surface modifier, and coupling agent in composite systems, filled polymers, sealants, coatings, and foundry resins. Silane APTES is a low-viscosity liquid, soluble in alcohols and hydrocarbons, and readily soluble in water.
In industrial processing, it is incorporated into resin systems, used as a primer, or applied for pretreatment of fillers and substrates to improve interfacial compatibility between organic matrices and inorganic materials.
Chemical Name: 3-Aminopropyltrimethoxysilane
CAS Number: 13822-56-5
Functional Equivalents:
Amino Silane
γ-Aminopropyltriethoxysilane
Dynasylan AMEO
LT550
| Parameter | Typical Value |
|---|---|
| Chemical Name | 3-Aminopropyltriethoxysilane |
| CAS Number | 919-30-2 |
| Chemical Type | Amino-functional organosilane |
| Appearance | Colorless to slightly yellowish liquid |
| Density (20°C) | ~0.95 g/cm³ |
| Boiling Point | ≥ 220°C |
| Flash Point | ≥ 89°C |
| Refractive Index (20°C) | 1.422 |
| Viscosity (20°C) | ~2 mPa·s |
| Solubility | Soluble in alcohols, hydrocarbons, and water |
The above specifications are provided for reference purposes only. For precise and up-to-date technical details, please contact our marketing team.
Typical usage levels depend on the substrate and application method. In filler pretreatment and resin modification systems, silane coupling agents are generally used in low percentage levels relative to filler or resin content as per formulation requirements.
“Recommended dosage may vary based on formulation and processing conditions. Users should verify dosage before commercial use.”
We deliver pan-India and have tie-ups with all major couriers & transporters for timely dispatch.
Store in original, tightly closed containers.
Recommended storage temperature: 4°C to 40°C.
Protect from moisture and prolonged exposure to air.
Avoid contact with incompatible materials and strong oxidizing agents.
Refer to SDS before handling and processing.
Evonik Industries. (2024). Dynasylan® AMEO Technical Data Sheet. Retrieved from Evonik
Gelest, Inc. (2017). 3-Aminopropyltrimethoxysilane Safety Data Sheet. Retrieved from Gelest
Sigma-Aldrich. (n.d.). (3-Aminopropyl)trimethoxysilane Product Information. Retrieved from Sigma-Aldrich
Lab Line Enterprises is an ISO 9001:2015 certified supplier and dealer of specialty rubber and polymer chemicals. Silane APTES is supplied in standard 25 kg packs and small 1 kg packs for trials and R&D purposes. The product is commonly used in industrial clusters such as Mumbai, Pune, Ahmedabad, Chennai, Bengaluru, Delhi NCR, and Hyderabad for composites, coatings, and filled polymer applications. We coordinate pan-India dispatch through established courier and transporter networks to support industrial buyers and manufacturing units.
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