Description

Poly(Oxy-1,2-Ethanediyl), .Alpha.,.Alpha.-(Dimethylsilylene)Bis.Omega.-Methoxy- is a specialized organosilicon-modified polyether, a key functional fluid and reactive intermediate in advanced material synthesis. Its unique structure, featuring a central dimethylsilylene group capped with methoxy-terminated polyoxyethylene chains, provides exceptional surfactant properties and compatibility with both organic and aqueous systems. This compound is essential for formulators and manufacturers in the personal care, polyurethane, and specialty chemical industries seeking to enhance product performance through tailored surface activity and polymer modification.

Application

• Polyurethane Foam Additive: Acts as a cell opener and surfactant in flexible polyurethane foam production, improving foam structure and air flow.
• Personal Care Surfactant: Used in high-end cosmetic and skincare formulations as a non-ionic emulsifier and conditioning agent.
• Textile & Fiber Lubricant: Provides excellent lubrication and anti-static properties in synthetic fiber spinning and textile processing.
• Release Agent Intermediate: Serves as a key precursor in the synthesis of silicone-based mold release agents for plastics and rubber.
• Adhesive & Sealant Modifier: Imparts flexibility, moisture resistance, and improved adhesion in various sealant and adhesive formulations.
• Pharmaceutical Excipient: Potential use as a solubilizer or emulsifying agent in topical drug delivery systems (subject to appropriate grade and regulatory compliance).
• Industrial Defoamer Component: Utilized as a building block in the manufacture of high-efficiency silicone polyether defoamers for process industries.

Basic Information

Product Name	Poly(Oxy-1,2-Ethanediyl), .Alpha.,.Alpha.-(Dimethylsilylene)Bis.Omega.-Methoxy-
CAS No.	67846-47-3
Molecular Formula	Contact for details
Molecular Weight	Variable (depends on ethylene oxide chain length, n)
Synonyms	α,α'-(Dimethylsilylene)bis[ω-methoxypoly(oxyethylene)]
Bis(methoxypolyethylene glycol) dimethylsilane
Polyethylene glycol dimethylsilyl diether
Dimethylsilyl-bis(polyethylene glycol methyl ether)
PEG dimethylsilyl diether
Silicone polyether surfactant (specific type)
Organomodified siloxane polyether
EINECS	Contact for details

Quality Control

Our Poly(Oxy-1,2-Ethanediyl), .Alpha.,.Alpha.-(Dimethylsilylene)Bis.Omega.-Methoxy- is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistent performance, including assessment of hydroxyl value, viscosity, cloud point, and silicon content. A comprehensive Certificate of Analysis (COA) detailing purity, physical properties, and key specifications is provided with every shipment. We support customer-specific quality audits and can tailor specifications to meet the requirements of ISO, GMP, or REACH compliant supply chains.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). Keep away from strong bases and incompatible materials such as strong oxidizing agents. For long-term storage (>12 months) or to maintain optimal clarity and performance, storage under an inert atmosphere (nitrogen) is recommended.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
Identification (IR)	Conforms to structure
Assay (by Si content)	≥ 95.0%
Hydroxyl Value (mg KOH/g)	Customer specified
Viscosity @ 25°C (cSt)	Customer specified
Water Content (KF)	≤ 0.5%
Cloud Point (1% in water, °C)	Customer specified
pH (5% solution)	5.0 - 7.5

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