Description

(66-70% Polydimethylsiloxane)-Ethylene Copolymer, 20-25 Cst is a specialized organosilicon copolymer engineered to deliver a unique balance of silicone and hydrocarbon properties. This product matters for formulators seeking to modify rheology, enhance lubricity, and improve surface activity in demanding industrial applications. It is particularly needed by manufacturers in the personal care, coatings, and specialty lubricants industries where tailored performance is critical.

Application

• Personal Care & Cosmetics: Acts as a versatile emollient and conditioning agent in hair care products, skin creams, and sunscreens, providing a non-greasy, smooth feel.
• Industrial Lubricants & Greases: Serves as a high-performance base fluid or additive to enhance thermal stability, reduce friction, and improve water repellency.
• Coatings & Inks: Used as a flow and leveling agent, slip additive, or mar-resistant component to improve surface finish and application properties.
• Plastics & Rubber Processing: Functions as an internal lubricant and mold release agent to aid in processing and improve surface quality of finished parts.
• Textile & Fiber Treatment: Imparts softness, water repellency, and lubricity to fibers and fabrics during manufacturing.
• Adhesives & Sealants: Modifies rheology and enhances compatibility in formulations, contributing to improved application and performance.

Basic Information

Product Name	(66-70% Polydimethylsiloxane)-Ethylene Copolymer, 20-25 Cst
CAS No.	26710-23-6
Molecular Formula	(C2H6OSi)n·(C2H4)m
Molecular Weight	Varies (Copolymer)
Synonyms	Poly(dimethylsiloxane-co-ethylene); Ethylmethylsiloxane-dimethylsiloxane copolymer; Silicone-ethylene copolymer; PDMS-ethylene copolymer; Poly[oxy(dimethylsilylene)-co-oxy(ethylmethylsilylene)]; Dimethyl, methyl(ethyl) siloxane copolymer; Silicone fluid (modified); Modified polydimethylsiloxane
EINECS	Contact for details

Quality Control

Our (66-70% Polydimethylsiloxane)-Ethylene Copolymer is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistency in viscosity, copolymer composition, and purity. Certificates of Analysis (COA) documenting key 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 oxidizing agents. Under these conditions, the product is stable for extended periods.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Viscosity @ 25°C	20 - 25 cSt
Polydimethylsiloxane Content	66 - 70 %
Specific Gravity @ 25°C	0.92 - 0.98
Refractive Index @ 25°C	1.40 - 1.42
Flash Point	> 150 °C
Water Content	< 0.1 %

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