Description

Bis(Methoxytriethyleneoxypropyl)Tetramethyldisiloxane is a specialized organosilicon compound, specifically a siloxane surfactant with hydrophilic polyether chains. This product matters for its unique ability to modify surface tension and act as a compatibilizer, wetting agent, or foam control additive in complex formulations. It is primarily needed by manufacturers in the personal care, coatings, polyurethane foam, and agrochemical industries seeking advanced performance additives.

Application

• Polyurethane Foam Stabilizer: Acts as a cell opener and stabilizer in flexible slabstock and molded foam production.
• Personal Care & Cosmetics: Used as an emollient, spreading agent, and texture enhancer in creams, lotions, and sunscreens.
• Coatings & Inks: Functions as a flow and leveling agent, improving substrate wetting and film formation.
• Agrochemical Adjuvants: Enhances the spreading and penetration of pesticides and herbicides on plant surfaces.
• Industrial Surfactant: Serves as a wetting and dispersing agent in cleaning formulations and industrial processes.
• Lubricant & Release Agent: Used as a component in mold release formulations and specialty lubricants.

Basic Information

Product Name	Bis(Methoxytriethyleneoxypropyl)Tetramethyldisiloxane
CAS No.	1115220-12-6
Molecular Formula	C24H54O9Si2
Molecular Weight	566.9 g/mol
Synonyms	α-Methyl-ω-methoxypoly(oxy-1,2-ethanediyl)-terminated polydimethylsiloxane (EO approx. 3); Polyether-modified silicone surfactant; Silicone polyether copolymer; Poly(ethylene glycol) methyl ether (3) terminated polydimethylsiloxane; PDMS-PEG copolymer; Dimethicone copolyol (with 3 EO units); Bis(methoxy PEG-3 propyl) tetramethyldisiloxane; Silwet® L-77 analogue
EINECS	Contact for details

Quality Control

Our Bis(Methoxytriethyleneoxypropyl)Tetramethyldisiloxane is produced under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure consistent performance and purity. A comprehensive Certificate of Analysis (COA) detailing assay, identity, and key physical properties is provided with each shipment to guarantee compliance with your formulation requirements.

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). This material is hygroscopic (moisture-sensitive); ensure containers are sealed immediately after use to prevent absorption of atmospheric moisture which may affect product performance.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 0.5%
Viscosity (25°C)	Reported on COA
Specific Gravity (25°C)	Reported on COA
Refractive Index (25°C)	Reported on COA

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