Description

2,2,4,25,27,27-Hexamethyl-3,26-Dioxa-2,27-Disilaoctacosane is a specialized organosilicon compound, a member of the siloxane family, with the CAS number 56196-18-0. This chemical serves as a versatile building block and intermediate, valued for its ability to impart specific hydrophobic and surface-modifying properties to materials. It is primarily sought after by manufacturers in the silicone polymers, advanced materials, and specialty chemical synthesis sectors for developing high-performance products.

Application

• Silicone Polymer Modification: Acts as a functional monomer or chain extender to tailor the flexibility, hydrophobicity, and thermal stability of silicone elastomers and resins.
• Surface Treatment Agent: Used to create hydrophobic and oleophobic coatings on glass, metals, and textiles for water-repellent and anti-stain applications.
• Release Coatings: A key intermediate in formulating silicone-based release liners for pressure-sensitive adhesives and industrial molding processes.
• Personal Care & Cosmetics: Employed in the synthesis of silicone fluids and elastomers used in hair conditioners, skin care products, and antiperspirants for a smooth, non-greasy feel.
• Pharmaceutical Intermediates: Serves as a protected synthon or linker in the multi-step synthesis of complex drug molecules and active pharmaceutical ingredients (APIs).
• Adhesive & Sealant Formulations: Enhances the adhesion, weather resistance, and durability of high-performance silicone and hybrid polymer sealants.
• Lubricant & Grease Additives: Incorporated into specialty lubricants to improve performance under extreme temperatures and reduce friction.
• Research & Development: A valuable reagent for academic and industrial R&D in organosilicon chemistry and novel material science.

Basic Information

Item	Details
Product Name	2,2,4,25,27,27-Hexamethyl-3,26-Dioxa-2,27-Disilaoctacosane
CAS No.	56196-18-0
Molecular Formula	C32H70O2Si2
Molecular Weight	543.1 g/mol
Synonyms	Hexamethyldisiloxane, 1,3-Bis(3-glycidoxypropyl)-1,1,3,3-tetramethyl-; 1,3-Bis(3-glycidyloxypropyl)tetramethyldisiloxane; 3-[3-(3-Glycidyloxypropyl)-1,1,3,3-tetramethyldisiloxanyl]propan-1-ol glycidyl ether; Glycidoxypropyl Terminated Polydimethylsiloxane; Epoxy Functional Silicone Oil; EGP Siloxane; DMS-E12 (Gelest)
EINECS	Contact for details

Quality Control

Our production of 2,2,4,25,27,27-Hexamethyl-3,26-Dioxa-2,27-Disilaoctacosane adheres to a stringent quality management system. Every batch undergoes comprehensive analytical testing, including GC, HPLC, and NMR, to verify identity, purity, and consistency. Certificates of Analysis (COA) detailing all specifications are provided with each shipment to ensure full traceability and compliance with your technical requirements.

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); containers must be kept tightly sealed and under a dry inert atmosphere (e.g., nitrogen) for long-term storage to prevent hydrolysis and maintain product integrity.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 95.0%
Epoxy Value	Contact for details
Viscosity (25°C)	Contact for details
Water Content (KF)	≤ 0.1%
Specific Gravity (25°C)	Contact for details

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