High Purity Aminoethylaminopropyltriethoxysilane | CAS 5089-72-5
Verifying CAS 5089-72-5 Identity for Seamless KBE-603 Substitution
Chemical identity verification is the primary step in qualifying a drop-in replacement for KBE-603 silane within existing formulations. The target molecule, Aminoethylaminopropyltriethoxysilane, corresponds strictly to CAS Registry Number 5089-72-5. This diamino-functionalized organosilane features a propyl backbone bridging a triethoxysilyl group and a diamino terminal group. Structural integrity is critical because deviations in the alkoxy group (methoxy vs. ethoxy) or amine functionality significantly alter hydrolysis rates and compatibility with organic resins.
Procurement teams must validate that the supplied material matches the specific ethoxy configuration rather than methoxy variants such as KBM-603 (CAS 1760-24-3). The ethoxy groups provide a slower hydrolysis rate compared to methoxy equivalents, offering extended pot life in aqueous solutions and improved handling safety during bulk mixing. At NINGBO INNO PHARMCHEM CO.,LTD., batch verification utilizes GC-MS and NMR spectroscopy to confirm the molecular structure matches the 5089-72-5 specification before release. This ensures that the silane coupling agent performs predictably when substituted into epoxy, phenolic, or polyurethane systems without requiring reformulation of catalysts or curing agents.
Comparative Technical Data: Aminoethylaminopropyltriethoxysilane Properties
Technical validation requires direct comparison of physical constants and purity profiles against industry benchmarks. The following table outlines typical specifications for high-purity Aminoethylaminopropyltriethoxysilane. These parameters are essential for R&D departments assessing viscosity impacts, density calculations for composite loading, and refractive index matching in transparent coatings.
| Parameter | Typical Specification | Test Method |
|---|---|---|
| CAS Number | 5089-72-5 | Registry |
| Chemical Name | N-(2-Aminoethyl)-3-aminopropyltriethoxysilane | IUPAC |
| Molecular Weight | 222.4 g/mol (Approx.) | Calculation |
| Appearance | Colorless to Pale Yellow Liquid | Visual |
| Purity (GC) | ≥ 95.0% | Gas Chromatography |
| Specific Gravity (25°C) | 0.94 - 0.96 | ASTM D4052 |
| Refractive Index (25°C) | 1.420 - 1.430 | ASTM D1218 |
| Boiling Point | 217°C (at 760 mmHg) | Distillation |
| Flash Point | 98°C (Closed Cup) | ASTM D93 |
Data consistency across batches is maintained through strict quality control protocols. Variations in purity below 95% can introduce non-reactive impurities that compromise interfacial bonding strength. The specific gravity range indicates the material is lighter than water, which influences mixing protocols in aqueous emulsions. Refractive index data is particularly relevant for optical applications or clear coat formulations where haze must be minimized. Procurement specifications should mandate a Certificate of Analysis (COA) reflecting these specific ranges to ensure the Silane Coupling Agent KH-602 equivalent meets production tolerances.
Adhesion Promotion Performance Metrics for Inorganic Surface Treatment
The functional efficacy of this diamino silane relies on its ability to form stable covalent bonds between inorganic substrates and organic polymers. The triethoxysilyl moiety hydrolyzes in the presence of moisture to generate silanols, which condense onto hydroxylated surfaces such as glass, metals, and minerals. Simultaneously, the primary and secondary amine groups react with epoxy, phenolic, or isocyanate functionalities in the resin matrix. This dual reactivity creates an interfacial layer that resists hydrolytic degradation under humid or thermal stress conditions.
Performance metrics for adhesion promotion are typically quantified through lap shear strength testing on treated substrates. In glass fiber reinforced plastics, surface treatment with this silane improves wet-out characteristics and reduces void formation during lamination. For mineral-filled composites, the coupling agent enhances dispersion during high-shear mixing, leading to improved mechanical strength and impact resistance. The amino functionality also acts as a catalyst for epoxy curing, potentially reducing cycle times in thermoset processing. However, this catalytic effect must be accounted for in formulation stability studies, as premature gelation can occur if moisture control is insufficient during storage.
R&D Validation Framework for Qualifying Silane Coupling Agent Alternatives
Qualifying an alternative source requires a structured validation framework to mitigate supply chain risk without compromising product performance. The initial phase involves comparative testing of the new silane against the incumbent material in a controlled lab environment. Key performance indicators include tensile strength, elongation at break, and water absorption rates after accelerated aging. It is critical to verify that the hydrolysis rate of the ethoxy groups aligns with the processing window of the existing manufacturing line.
For detailed guidance on qualifying specific equivalents, engineers should review the Aminoethylaminopropyltriethoxysilane KBE-603 Triethoxy Silane Alternative supply documentation. This resource outlines the necessary steps for cross-referencing technical data sheets and validating batch consistency. Subsequent pilot trials should focus on scale-up parameters, ensuring that mixing times and temperatures do not degrade the silane prior to incorporation. Stability testing of the diluted silane solution is also required, as amino silanes generally exhibit better stability in aqueous solutions compared to other functional silanes, but pH control remains necessary to prevent premature polymerization.
When sourcing materials for critical applications, selecting a supplier capable of providing Aminoethylaminopropyltriethoxysilane equivalent to Silane Coupling Agent KH-602 ensures access to high-purity grades suitable for demanding electronic or automotive specifications. Validation should conclude with a full mechanical property assessment of the final composite part to confirm that the substitution yields equivalent or improved performance metrics.
Supply Chain Continuity and Batch Consistency for Manufacturing Scale-Up
Long-term manufacturing viability depends on supply chain resilience and consistent batch-to-batch quality. Variations in silane purity or impurity profiles can lead to significant defects in downstream composite production, including delamination or reduced corrosion resistance. A robust supplier maintains large-scale synthesis capabilities with redundant production lines to prevent interruptions. Inventory management systems should track lot numbers and retain samples for traceability in the event of quality disputes.
Packaging integrity is another critical factor, as moisture ingress can hydrolyze the ethoxy groups during transit, rendering the material unusable. Containers must be sealed under inert gas or designed with moisture-barrier liners to preserve shelf life. Upon receipt, materials should be stored in a cool, dark, and dry environment to minimize degradation. Regular audits of supplier quality systems ensure that specifications for density, refractive index, and GC purity are consistently met. By establishing a partnership with a dedicated chemical manufacturer, companies can secure priority allocation during market shortages and maintain continuous production schedules.
Reliable access to raw materials supports uninterrupted manufacturing operations. NINGBO INNO PHARMCHEM CO.,LTD. maintains strict inventory controls and quality assurance protocols to support global demand for high-performance silane coupling agents. Consistent supply allows R&D teams to finalize formulations with confidence, knowing that future production batches will match the properties of the initial qualification samples.
To request a batch-specific COA, SDS, or secure a bulk pricing quote, please contact our technical sales team.