Description

Trisiloxane, 3,3'-(1,2-Ethanediyl)Bis[3-[(Dimethylsilyl)Oxy]-1,1,5,5-Tetramethyl- is a specialized organosilicon compound featuring a unique ethane-bridged trisiloxane structure. This molecular architecture provides exceptional properties as a versatile chemical intermediate and functional additive. It is primarily sought after by manufacturers in the silicone polymer, personal care, and specialty coatings industries for its ability to modify surface properties and enhance material performance.

Application

• Silicone Polymer Modification: Acts as a key intermediate or cross-linking agent in the synthesis of specialty silicone resins, elastomers, and fluids, imparting tailored mechanical and thermal properties.
• Personal Care & Cosmetic Formulations: Used as an emollient or conditioning agent in hair care and skincare products to provide a smooth, non-greasy feel and improve spreadability.
• Release Coatings & Adhesives: Serves as a reactive component in release liner coatings and pressure-sensitive adhesives to control surface energy and release characteristics.
• Surface Treatment & Additives: Functions as a surface modifier or additive in coatings, inks, and composites to enhance water repellency, gloss, and compatibility.
• Lubricant & Grease Formulations: Employed as a high-performance additive in synthetic lubricants and greases to improve thermal stability and reduce friction.
• Pharmaceutical & Agrochemical Intermediates: Utilized in the synthesis of active ingredients or delivery agents requiring specific siloxane functionalities.

Basic Information

Product Name	Trisiloxane, 3,3'-(1,2-Ethanediyl)Bis[3-[(Dimethylsilyl)Oxy]-1,1,5,5-Tetramethyl-
CAS No.	118086-93-4
Molecular Formula	C18H50O4Si6
Molecular Weight	519.2 g/mol
Synonyms	1,1,1,5,5,5-Hexamethyl-3,3-bis[(trimethylsilyl)oxy]trisiloxane (ethane-1,2-diylbis(oxy))bis(dimethylsilane); 3,3'-(Ethane-1,2-diyl)bis(oxy)bis(N,N,N',N'-tetramethyl-1,1,5,5-tetramethyltrisiloxan-3-amine) (related amine derivative); Ethane-1,2-diyl bis((dimethyl(trimethylsilyloxy)silyl)oxy)dimethylsilane); Bis(3-(dimethyl(trimethylsilyloxy)silyl)oxy)-1,1,5,5-tetramethyltrisiloxan-3-yl)ethane; Tetramethyl-bis[(trimethylsilyl)oxy]trisiloxane ethane diyl derivative
EINECS	Contact for details

Quality Control

Our Trisiloxane, 3,3'-(1,2-Ethanediyl)Bis[3-[(Dimethylsilyl)Oxy]-1,1,5,5-Tetramethyl- is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including chromatography (GC/HPLC) and spectroscopic methods (IR, NMR), to ensure identity, purity, and consistency. Certificates of Analysis (COA) documenting all critical specifications are provided with every shipment 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 a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); containers must be kept tightly sealed to prevent degradation from atmospheric moisture. Keep away from strong acids and organic solvents.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 95.0%
Water Content (KF)	≤ 0.5%
Refractive Index (n20D)	1.4050 - 1.4150
Density (20°C)	0.95 - 1.00 g/cm³

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