Description

1,3-Bis(3-(2-Hydroxyethoxy)Propyl)Tetramethyldisiloxane, 95% is a specialized organosilicon compound featuring a central disiloxane backbone with functional hydroxyethoxypropyl side chains. This unique structure makes it a valuable reactive intermediate and functional additive for modifying surface properties and enhancing compatibility in advanced material formulations. It is primarily sought by manufacturers in the personal care, coatings, adhesives, and specialty polymer industries for its ability to impart hydrophilicity, flexibility, and improved adhesion.

Application

• Personal Care Formulations: Acts as a conditioning agent, emollient, and viscosity modifier in hair care and skincare products.
• Silicone-Modified Polymers: Serves as a reactive monomer or crosslinker for synthesizing polyether-modified silicones (PEMS) with tailored properties.
• Surface Treatment & Coatings: Used as a coupling agent or additive to improve wetting, adhesion, and surface slip in industrial and protective coatings.
• Adhesives and Sealants: Incorporated to enhance flexibility, moisture resistance, and compatibility between dissimilar materials.
• Fiber and Textile Treatment: Applied as a softener and finishing agent to improve fabric hand feel and durability.
• Polyurethane Additives: Functions as a cell opener or surfactant in flexible foam production.

Basic Information

Item	Details
Product Name	1,3-Bis(3-(2-Hydroxyethoxy)Propyl)Tetramethyldisiloxane, 95%
CAS No.	441307-02-4
Molecular Formula	C16H40O6Si2
Molecular Weight	384.66 g/mol
Synonyms	Bis(3-(2-hydroxyethoxy)propyl)tetramethyldisiloxane; Polyether-modified disiloxane; α,ω-Bis(3-(2-hydroxyethoxy)propyl)tetramethyldisiloxane; Tetramethyl-1,3-bis(3-(2-hydroxyethoxy)propyl)disiloxane; Hydroxyethoxypropyl-terminated polydimethylsiloxane (low MW); Dow Corning® 190 Surfactant (related compound); Silicone glycol copolymer; 1,3-Bis(3-(2-hydroxyethoxy)propyl)-1,1,3,3-tetramethyldisiloxane
EINECS	Contact for details

Quality Control

Our 1,3-Bis(3-(2-Hydroxyethoxy)Propyl)Tetramethyldisiloxane, 95% is produced under a strict quality management system. Every batch undergoes rigorous analytical testing, including assay by GC or HPLC and identification by FTIR, to ensure it meets the declared specifications and is free from unintended contaminants. A Certificate of Analysis (COA) detailing purity, identity, and key physical parameters is provided with each shipment to guarantee traceability and consistency for your production processes.

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 nature, the container must be kept tightly sealed when not in use to prevent moisture absorption, which can affect product performance. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC/HPLC)	≥ 95.0%
Water Content (KF)	≤ 0.5%
Refractive Index (20°C)	1.440 - 1.445
Density (20°C)	0.98 - 1.02 g/mL

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