3-(Triethoxysilyl)propylsuccinic anhydride (CAS No. 93642-68-3) is a multifunctional silane coupling agent and surface modification reagent used to improve the chemical interaction between inorganic materials and organic polymer systems.
Its molecular structure contains two complementary reactive functionalities:
This dual-functional structure makes 3-(Triethoxysilyl)propylsuccinic anhydride particularly useful for polymer functionalization, filler treatment, composite materials, coatings, adhesives, and organic–inorganic interface engineering.
The triethoxysilyl group can undergo hydrolysis in the presence of moisture to generate silanol groups.
These silanol groups can interact with hydroxylated surfaces and form stable siloxane-type linkages.
Simplified process:
Si–(OCH₂CH₃)₃ → Si–OH → Si–O–Surface
This mechanism allows the molecule to act as a chemical bridge between inorganic surfaces and organic materials.
The succinic anhydride group provides an additional reactive site that can undergo ring-opening reactions with suitable nucleophilic groups, including:
As a result, 3-(Triethoxysilyl)propylsuccinic anhydride can combine surface coupling and organic functionalization within a single molecule.
3-(Triethoxysilyl)propylsuccinic anhydride is used as a functional silane coupling agent for connecting inorganic surfaces with organic materials.
Applications include:
The triethoxysilyl group allows the compound to modify hydroxyl-containing inorganic surfaces.
Applications include:
The succinic anhydride functionality can be used to introduce reactive groups into polymer systems.
Applications include:
The compound can be investigated to improve chemical interactions between inorganic fillers and polymer matrices.
Applications include:
By improving interactions at organic–inorganic interfaces, 3-(Triethoxysilyl)propylsuccinic anhydride can be used in adhesion-related research.
Applications include:
The bifunctional structure makes this compound useful for developing coatings with tailored interfacial properties.
Applications include:
Commercially available grades include approximately 95% purity, while some suppliers offer ≥98% material. TCI lists the product at >93.0% GC purity, while ChemScene lists ≥98% purity.
ChemScene recommends storage at 4°C under nitrogen and away from moisture.
Supplier safety information identifies potential skin irritation, serious eye irritation, and respiratory irritation hazards, although classifications can vary by supplier and regulatory jurisdiction.
Researchers and manufacturers working in the following fields may use 3-(Triethoxysilyl)propylsuccinic anhydride (CAS No. 93642-68-3):
A: 3-(Triethoxysilyl)propylsuccinic anhydride is a multifunctional organosilane and coupling reagent with CAS No. 93642-68-3, molecular formula C₁₃H₂₄O₆Si, and molecular weight 304.41 g/mol.
A: It is mainly used as a silane coupling agent, surface modifier, polymer functionalization reagent, and adhesion-promoting reagent in polymer, coating, composite, and surface chemistry research.
A: The molecular formula is C₁₃H₂₄O₆Si.
A: The molecular weight is 304.41 g/mol.
A: Yes. Its triethoxysilyl group can interact with inorganic surfaces, while its succinic anhydride group provides additional organic reactivity, making it a multifunctional coupling reagent.
A: The triethoxysilyl functionality is susceptible to hydrolysis, so the product should be protected from moisture during storage and handling. ChemScene recommends storage under nitrogen and away from moisture.
A: Common synonyms include [(3-Triethoxysilyl)propyl]succinic Anhydride, Triethoxysilylpropylsuccinic anhydride, 3-Triethoxysilylpropylsuccinic acid anhydride, Dihydro-3-[3-(triethoxysilyl)propyl]furan-2,5-dione, GF-20, Geniosil GF 20, and SIT 8192.6.
A: In addition to the hydrolyzable triethoxysilyl group, it contains a succinic anhydride functionality, providing an additional reactive site for organic functionalization. This makes it useful when both inorganic surface coupling and organic reactivity are required.
