Description

Orthodisilicic Acid Hexa-sec-Butyl Ester is a high-purity organosilicon compound, also known by its CAS number 4444-59-1. This specialty chemical serves as a versatile precursor and cross-linking agent, valued for its ability to introduce silicon-based functionality into advanced materials. It is essential for manufacturers in the electronics, coatings, and specialty polymer industries seeking to enhance material properties such as thermal stability, adhesion, and hydrophobicity.

Application

• Precursor for Silicone Resins & Elastomers: Acts as a key building block in the synthesis of high-performance silicone-based polymers.
• Surface Modification Agent: Used to functionalize inorganic fillers (e.g., silica, glass) to improve compatibility and dispersion in organic polymer matrices.
• Adhesion Promoter in Specialty Coatings: Enhances the bonding of coatings to difficult substrates like metals and plastics.
• Dielectric Material in Electronics: Employed in the formulation of spin-on glasses (SOG) and interlayer dielectrics for semiconductor devices.
• Hydrophobic Agent: Imparts water-repellent characteristics to textiles, construction materials, and paper.
• Cross-linker for Hybrid Organic-Inorganic Polymers: Facilitates the formation of sol-gel derived materials with tailored mechanical and optical properties.

Basic Information

Product Name	Orthodisilicic Acid Hexa-sec-Butyl Ester
CAS No.	4444-59-1
Molecular Formula	C24H54O6Si2
Molecular Weight	494.86 g/mol
Synonyms	Hexa-sec-butoxy Disiloxane; Disiloxane, Hexa-sec-butoxy-; Di-sec-butoxysilane Dimer; Bis(tri-sec-butoxysilyl) Ether; Orthodisilicic Acid Hexa(2-butyl) Ester; Silicon sec-Butoxide Dimer; 1,1,1,3,3,3-Hexa-sec-butoxydisiloxane
EINECS	Contact for details

Quality Control

Our Orthodisilicic Acid Hexa-sec-Butyl Ester is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including Gas Chromatography (GC) and NMR spectroscopy, to ensure high purity and consistency. Certificates of Analysis (COA) detailing specific batch results are provided and available upon request 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). This product is hygroscopic (moisture-sensitive). Keep the container tightly sealed under an inert atmosphere (e.g., nitrogen or argon) to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Density (at 20°C)	0.90 - 0.95 g/mL
Refractive Index (n20D)	1.405 - 1.415
Moisture (Karl Fischer)	≤ 0.1%

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