Description

2,2,4,4,6,6,8,8-Octakis(1-Methylpropoxy)Cyclooctanetetrasiloxane is a highly functionalized, branched organosilicon compound belonging to the cyclosiloxane family. This unique structure provides exceptional versatility as a reactive intermediate or functional additive in advanced material synthesis. It is particularly valuable for industries requiring materials with tailored surface properties, thermal stability, and chemical resistance. Key sectors that utilize this specialty chemical include advanced polymer manufacturing, high-performance coatings, and electronics.

Application

• As a key monomer or cross-linking agent in the synthesis of specialty silicone resins and high-performance polymers.
• As a surface modification agent for inorganic fillers (e.g., silica, glass) to improve dispersion and compatibility in polymer matrices.
• As a precursor for functional silanes used in adhesion promoters for coatings, sealants, and adhesives.
• In the formulation of release coatings and anti-stick surfaces for industrial and packaging applications.
• As a building block for dendritic or hyperbranched polymers with precise architectural control.
• For research and development of novel hybrid organic-inorganic materials (ORMOSILs) with customized properties.
• Potential use as an additive in electronic encapsulants to enhance thermal and moisture resistance.

Basic Information

Product Name	2,2,4,4,6,6,8,8-Octakis(1-Methylpropoxy)Cyclooctanetetrasiloxane
CAS No.	70969-56-1
Molecular Formula	C40H88O12Si4
Molecular Weight	873.5 g/mol
Synonyms	Octakis(sec-butoxy)cyclooctatetrasiloxane; Cyclooctasiloxane, 2,2,4,4,6,6,8,8-octakis(1-methylpropoxy)-; 1-Methylpropoxy Cyclooctatetrasiloxane; sec-Butoxy Cyclooctatetrasiloxane; Cyclic Siloxane Tetramer with sec-Butoxy Groups; Reactive Cyclosiloxane Tetramer; Tetrakis(sec-butoxy) Disiloxane Dimer (alternative structural description); Functional Cyclooctatetrasiloxane
EINECS	Contact for details

Quality Control

Our production of 2,2,4,4,6,6,8,8-Octakis(1-Methylpropoxy)Cyclooctanetetrasiloxane adheres to strict quality management protocols to ensure batch-to-batch consistency and reliability. Each lot undergoes rigorous analytical testing, including assay by NMR and GC, to verify chemical identity and purity. We provide comprehensive Certificates of Analysis (COA) upon request, detailing all relevant specifications to support your quality assurance and regulatory needs.

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). Keep away from heat sources and incompatible materials such as strong acids and bases. The container must be kept tightly sealed to prevent moisture absorption.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 95.0%
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%

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