Description

Orthosilicic Acid Tributylpropyl Ester is a specialized organosilicon compound, also known by its CAS number 55683-20-0. This ester is valued for its role as a versatile coupling agent and intermediate in advanced material synthesis. It is essential for industries requiring surface modification, adhesion promotion, and the development of hybrid organic-inorganic polymers.

Application

• Coupling Agent: Enhances adhesion between inorganic fillers (e.g., silica, glass) and organic polymer matrices in composites and sealants.
• Surface Modification: Used to treat pigments, nanoparticles, and fibers to improve dispersion and compatibility in coatings and plastics.
• Silicone Intermediate: Serves as a key building block in the synthesis of custom silicone resins and modified siloxanes.
• Adhesive & Sealant Formulations: Improves moisture resistance and bonding strength in high-performance industrial adhesives.
• Crosslinking Agent: Facilitates the formation of stable, cross-linked networks in specialty rubber and elastomer products.
• Research & Development: Employed in laboratories for developing novel hybrid materials and studying sol-gel chemistry processes.

Basic Information

Product Name	Orthosilicic Acid Tributylpropyl Ester
CAS No.	55683-20-0
Molecular Formula	C15H34O4Si
Molecular Weight	306.52 g/mol
Synonyms	Tributylpropyl Orthosilicate; Propyltributoxysilane; 1-Propyltri-n-butoxysilane; Tri-n-butoxy(propyl)silane; Propyltri-n-butyl Orthosilicate; Silicic Acid (H4SiO4), Tributyl Propyl Ester; Propyltributyl Silicate; n-Propyltri-n-butoxysilane
EINECS	Contact for details

Quality Control

Our production of Orthosilicic Acid Tributylpropyl Ester adheres to stringent quality protocols to ensure batch-to-batch consistency and purity. Each lot is analyzed using advanced techniques including GC, IR, and NMR spectroscopy. A Certificate of Analysis (COA) detailing identity, assay, and impurity profiles is provided with every shipment to support your quality assurance processes.

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). This material is hygroscopic (moisture-sensitive) and may decompose upon contact with strong alkali or certain organic solvents. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Density (20°C)	~0.90 g/mL
Refractive Index (n20D)	~1.410 - 1.415
Water Content (Karl Fischer)	≤ 0.5%

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