Description

Triethylacetoxysilane is a versatile organosilicon compound with the CAS number 5290-29-9, serving as a key intermediate in the synthesis of advanced silicone materials. Its reactive acetoxy and ethoxy groups make it a valuable reagent for introducing triethylsilyl moieties and for surface modification applications. This chemical is essential for manufacturers and R&D teams in the pharmaceutical, specialty chemical, and advanced materials sectors seeking precise functionalization and cross-linking capabilities.

Application

• Silicone Resin & Polymer Synthesis: Acts as a cross-linking agent and monomer for producing heat-resistant and durable silicone polymers.
• Surface Modification & Coupling Agent: Used to treat inorganic surfaces like glass, silica, and metals to improve adhesion and compatibility with organic matrices.
• Pharmaceutical Intermediate: Employed in the synthesis of active pharmaceutical ingredients (APIs) and as a protecting group reagent in complex organic syntheses.
• Adhesive & Sealant Formulations: Imparts moisture-curing properties and enhances the performance of silicone-based adhesives and sealants.
• Coating Additive: Improves the weather resistance, gloss, and mechanical properties of specialty coatings.
• Rubber & Elastomer Production: Functions as a structure modifier and reinforcing agent in silicone rubber manufacturing.

Basic Information

Product Name	Triethylacetoxysilane
CAS No.	5290-29-9
Molecular Formula	C8H18O2Si
Molecular Weight	174.31 g/mol
Synonyms	Acetoxytriethylsilane; Triethylsilyl acetate; Acetic Acid Triethylsilyl Ester; Triethyl(acetoxy)silane; Silane, acetoxytriethyl-; (Acetoxy)triethylsilane; Triethylsilanol acetate; EINECS 226-119-1
EINECS	226-119-1

Quality Control

Our Triethylacetoxysilane is manufactured under stringent quality management systems to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including GC, NMR, and titration methods, to confirm identity, potency, and impurity profiles. A Certificate of Analysis (COA) detailing all specifications is provided with every shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, containers must be kept tightly sealed and under an inert atmosphere (e.g., nitrogen) after opening to prevent hydrolysis and maintain product integrity.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 98.0%
Density (at 20°C)	0.90 - 0.92 g/mL
Refractive Index (n20D)	1.405 - 1.415
Water Content (KF)	≤ 0.5%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.