Description

2,2,4,4,7,7-Hexamethyl-1,3-Dioxa-2,4,7-Trisilacycloheptane CAS NO 71245-77-7 is a specialized organosilicon compound featuring a unique cyclic structure. This chemical is valued for its role as a versatile building block and intermediate in advanced material synthesis. It is primarily sought after by manufacturers in the silicone polymer, electronics, and specialty chemical industries for developing products with tailored thermal and surface properties.

Application

• Silicone Resin & Polymer Modification: Acts as a key monomer or cross-linking agent to enhance thermal stability, flexibility, and adhesion properties in high-performance silicone formulations.
• Electronics Encapsulation: Used in the synthesis of materials for potting and encapsulating electronic components, offering excellent moisture resistance and dielectric properties.
• Surface Treatment & Coatings: Serves as a precursor for creating hydrophobic, oleophobic, or release coatings on various substrates including glass, metals, and plastics.
• Adhesive & Sealant Formulations: Incorporated to improve the curing characteristics, durability, and environmental resistance of industrial adhesives and sealants.
• Pharmaceutical & Agro-Intermediate Synthesis: Functions as a protected silanol equivalent or a sophisticated scaffold in the synthesis of complex organic molecules for life science applications.
• Research & Development: Employed in academic and industrial R&D for exploring new organosilicon chemistry, novel polymers, and nanotechnology applications.

Basic Information

Product Name	2,2,4,4,7,7-Hexamethyl-1,3-Dioxa-2,4,7-Trisilacycloheptane
CAS No.	71245-77-7
Molecular Formula	C8H22O2Si3
Molecular Weight	234.52 g/mol
Synonyms	Hexamethylcyclotrisiloxane ethylene acetal; 1,3-Dioxa-2,4,7-trisilacycloheptane, 2,2,4,4,7,7-hexamethyl-; 2,2,4,4,7,7-Hexamethyl-2,4,7-trisila-1,3-dioxacycloheptane; Cyclic Siloxane Acetal; HMCTS-EA; Contact for additional trade names.
EINECS	Contact for details

Quality Control

Every batch of 2,2,4,4,7,7-Hexamethyl-1,3-Dioxa-2,4,7-Trisilacycloheptane is produced and tested under a strict quality management system. We ensure compliance with relevant industry standards and customer-specific requirements. Comprehensive Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are provided with each shipment to guarantee consistent quality and traceability.

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, the container must be kept tightly sealed after opening to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Refractive Index (n20D)	1.410 - 1.415
Density (20°C)	0.95 - 1.00 g/mL

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