Description

3-Isopropoxy-1,1,1,5,5,5-Hexamethyl-3-(Trimethylsiloxy)Trisiloxane is a specialized organosilicon compound, a reactive siloxane derivative valued for its unique combination of organic and inorganic properties. This chemical serves as a versatile intermediate and functional additive, enabling precise modification of material surfaces and polymer backbones. It is primarily utilized in the production of advanced silicone polymers, release coatings, and as a coupling agent in high-performance composites and adhesives for the electronics, aerospace, and specialty chemical manufacturing sectors.

Application

• Silicone Polymer Modification: Acts as a reactive intermediate or endblocker in the synthesis of custom silicone fluids, resins, and elastomers to tailor properties like viscosity, reactivity, and thermal stability.
• Surface Treatment & Coupling Agent: Used to modify inorganic surfaces (e.g., silica, metals) to improve compatibility and adhesion with organic polymer matrices in composite materials.
• Release Coating Formulations: Serves as a key component in the manufacture of high-performance, solvent-based or solventless silicone release coatings for labels and adhesive tapes.
• Personal Care & Cosmetic Ingredients: Employed as a precursor or additive in the production of specialty silicone derivatives that provide unique sensory properties and film formation.
• Electronics Encapsulation: Utilized in formulations for potting compounds and encapsulants where specific dielectric properties and moisture resistance are required.
• Adhesive & Sealant Systems: Functions as an adhesion promoter and crosslinking agent in silicone-based adhesives, sealants, and RTV (Room Temperature Vulcanizing) rubbers.

Basic Information

Item	Details
Product Name	3-Isopropoxy-1,1,1,5,5,5-Hexamethyl-3-(Trimethylsiloxy)Trisiloxane
CAS No.	72182-11-7
Molecular Formula	C13H36O4Si4
Molecular Weight	380.78 g/mol
Synonyms	Trisiloxane, 3-isopropoxy-1,1,1,5,5,5-hexamethyl-3-(trimethylsiloxy)-; 1,1,1,5,5,5-Hexamethyl-3-isopropoxy-3-(trimethylsiloxy)trisiloxane; Isopropoxy(trimethylsiloxy)hexamethyltrisiloxane; MD'M siloxane (with isopropoxy and trimethylsiloxy termini); Reactive trisiloxane derivative; Silane, isopropoxytrimethylsiloxy-terminated hexamethyltrisiloxanyl; Contact for additional trade names.
EINECS	Contact for details

Quality Control

Our 3-Isopropoxy-1,1,1,5,5,5-Hexamethyl-3-(Trimethylsiloxy)Trisiloxane is manufactured under strict quality management protocols. Each batch undergoes rigorous analytical testing, including assay by GC or NMR and impurity profiling, to ensure high purity and consistent performance. Certificates of Analysis (COA) detailing all relevant specifications are provided with every shipment to support your quality assurance and regulatory compliance 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). Due to its hygroscopic (moisture-sensitive) nature, containers must be kept tightly sealed under a dry inert atmosphere (e.g., nitrogen or argon) after opening to prevent hydrolysis and maintain product integrity. Keep away from strong acids and incompatible organic solvents.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC or NMR)	≥ 95.0%
Water Content (KF)	≤ 0.1%
Refractive Index (n20D)	1.390 - 1.400
Density (g/mL, 25°C)	0.88 - 0.92

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