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Contact SuppliersCAS NO.919-30-2
Why Choose Our 3-Aminopropyltriethoxysilane (APTES)?
1. High Purity & Stable Quality
Purity ≥99% with strict control of hydrolyzable chloride and color, ensuring consistent performance.
2. ????? Adhesion Promotion
Enhances bonding between inorganic materials (glass, metal, fillers) and organic polymers.
3. Widely Compatible
Suitable for epoxy, polyurethane, acrylic and silicone systems.
4. Equivalent to Global Brands
Comparable to A-1100 (Momentive), Z-6011 (Dow), KBM-903 (Shin-Etsu).
5. Reliable Supply & Fast Delivery
Stable production capacity with delivery time of 7–15 days.
Typical Technial Data
Appearance: Colorless to light yellow transparent liquid
Purity: ≥99%
Density (25°C): 0.94–0.96 g/cm³
Refractive Index: 1.420–1.422
Hydrolyzable Chloride: ≤0.02%
Color (Pt-Co): ≤30
Applications of APTES (A-1100 Silane):
• Adhesion promoter for coatings, paints and inks
• Coupling agent for glass fiber and mineral fillers
• Surface treatment for silica, aluminum hydroxide and talc
• Sealants and adhesives (PU, epoxy, silicone systems)
• Resin modification to improve mechanical properties
• Electronic materials and surface functionalization
3-Aminopropyltriethoxysilane
CAS No. 919-30-2 | Amino Silane Coupling Agent Manufacturer
Product Overview
CY-550 (3-Aminopropyltriethoxysilane, CAS 919-30-2) is a widely used amino-functional silane coupling agent designed to improve interfacial bonding between inorganic substrates and organic polymer systems.
Its molecular structure combines a reactive primary amine group with three hydrolyzable ethoxy groups, enabling strong and durable chemical linkage across dissimilar material interfaces.
Manufactured by Zibo Chiye Chemical Technology Co., Ltd., CY-550 is supplied with stable purity and controlled moisture, making it suitable for global industrial applications including adhesives, coatings, composites, rubber, and surface treatment systems.
During application, the ethoxy groups hydrolyze to form silanol groups that chemically bond with hydroxyl-rich inorganic surfaces such as glass, silica, metals, and mineral fillers. At the same time, the amino group interacts with epoxy, polyurethane, phenolic, and other resin systems. This dual reactivity forms a molecular bridge that significantly enhances adhesion strength, mechanical performance, and long-term durability.
Synonyms & International Reference Grades
International reference grades (for technical comparison only):
(Mentioned for application equivalence in overseas markets)
Typical Technical Specifications
|
Parameter |
Typical Value |
|
Chemical Name |
3-Aminopropyltriethoxysilane |
|
Product Code |
CY-550 |
|
CAS Number |
919-30-2 |
|
Molecular Formula |
C?H??NO?Si |
|
Molecular Weight |
221.37 |
|
Appearance |
Colorless to pale yellow transparent liquid |
|
Purity (GC) |
≥ 98.0% |
|
Density (20 °C) |
~0.94 g/cm³ |
|
Boiling Point |
~217 °C |
|
Flash Point |
~96 °C |
|
Solubility |
Soluble in alcohols & organic solvents; hydrolyzes in water |
Typical values are for reference and not intended as specification limits.
Key Features & Advantages
Strong Interfacial Bonding
The primary amino group actively reacts with epoxy, polyurethane, phenolic, and hybrid resin systems, improving chemical adhesion at the interface.
Efficient Coupling Mechanism
Hydrolyzed silanol groups form covalent bonds with inorganic substrates such as glass, metals, silica, and mineral fillers, creating a durable molecular bridge.
Improved Mechanical & Durability Performance
CY-550 enhances tensile strength, impact resistance, moisture resistance, and long-term aging stability in composites and coated systems.
Broad Formulation Compatibility
Suitable for solvent-based, water-borne, and hybrid systems with proper formulation control.
Application Logic & Industrial Uses
Adhesives & Sealants
Used as an adhesion promoter in epoxy, polyurethane, and hybrid adhesive systems to improve bonding to glass, metals, and mineral substrates while enhancing moisture resistance.
Coatings & Paints
Applied in industrial and protective coatings to improve substrate adhesion and coating durability, especially under humid or mechanically stressed conditions.
Polymer Composites & Fillers
Surface treatment of glass fiber, silica, and mineral fillers improves dispersion and interfacial compatibility, resulting in better mechanical properties and reduced material fatigue.
Rubber & Foundry Applications
Enhances bonding efficiency and stability in resin-bonded sand systems and rubber formulations, supporting consistent processing performance.
Surface Treatment & Modification
Commonly used as a primer or pretreatment agent for glass, metals, and ceramics prior to coating or bonding operations.
Why Choose CY-550 from CHIYE
Packaging & Storage
Manufacturer Information
Zibo Chiye Chemical Technology Co., Ltd.
A professional manufacturer of silane coupling agents and functional organosilicon products, supplying global industrial markets with stable quality and application-focused solutions.
TDS, SDS, and samples are available upon request.