Description

Dimethylsiloxane, Ethylene Oxide Block Copolymer is a versatile nonionic surfactant and polymeric emulsifier, known for its unique combination of silicone and polyether properties. This compound is highly valued for its ability to reduce surface tension, provide excellent wetting and spreading characteristics, and enhance foam control in complex formulations. It is an essential material for manufacturers in the personal care, textile, polyurethane foam, and industrial cleaning sectors seeking high-performance additive solutions.

Application

• Polyurethane Foam Stabilization: Acts as a key cell opener and stabilizer in flexible slabstock and molded foam production.
• Personal Care & Cosmetics: Used as an emulsifier, emollient, and conditioning agent in creams, lotions, shampoos, and antiperspirants.
• Textile & Fiber Processing: Serves as a softener, lubricant, and anti-static agent for synthetic fibers and fabrics.
• Industrial & Institutional (I&I) Cleaners: Functions as a wetting agent, defoamer, and surface modifier in heavy-duty cleaning formulations.
• Paints & Coatings: Employed as a flow and leveling agent, as well as a substrate wetting additive to improve film formation.
• Agriculture: Used as an adjuvant in pesticide and herbicide formulations to enhance spray droplet coverage and adhesion.
• Plastics & Rubber Processing: Acts as an internal lubricant and mold release agent to improve processing and surface finish.

Basic Information

Product Name	Dimethylsiloxane, Ethylene Oxide Block Copolymer
CAS No.	117272-76-1
Molecular Formula	Contact for details
Molecular Weight	Variable (Polymer)
Synonyms	Poly(ethylene oxide)-block-poly(dimethylsiloxane); EO-PDMS Block Copolymer; Polyether-modified Silicone; Silicone Polyether Copolymer; Polyoxyethylene Dimethylsiloxane; PDMS-PEO Block Copolymer; Alkylene Oxide-Modified Polydimethylsiloxane; Nonionic Silicone Surfactant
EINECS	Contact for details

Quality Control

Our Dimethylsiloxane, Ethylene Oxide Block Copolymer is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistent performance, including measurement of key parameters such as ethylene oxide content, silicone content, viscosity, and cloud point. Certificates of Analysis (COA) documenting purity and specifications are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong acids and organic solvents. For long-term storage, consider using an inert atmosphere to prevent oxidation. Keep container tightly sealed when not in use to minimize moisture absorption.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Viscosity @ 25°C	100 - 5000 cSt (Grade Dependent)
Ethylene Oxide (EO) Content	10 - 80% (Grade Dependent)
Water Content	≤ 0.5%
pH (5% Solution)	5.0 - 7.0
Cloud Point (1% in Water)	20 - 80°C (Grade Dependent)

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