Description

Polydiethylsiloxane, Triethylsiloxy Terminated is a specialized organosilicon polymer featuring a linear backbone of alternating silicon and oxygen atoms with ethyl groups attached to the silicon. This compound is valued for its unique combination of low surface energy, hydrophobicity, and thermal stability, making it a versatile functional fluid and additive. It is primarily sought after by manufacturers in the personal care, coatings, and specialty lubricant industries for its modifying and release properties.

Application

• Personal Care & Cosmetics: Acts as a conditioning agent and emollient in hair care products, skin creams, and sunscreens, providing a non-greasy, smooth feel.
• Release Agents & Molding: Used as an internal or external release agent in plastic, rubber, and composite molding processes to facilitate demolding.
• Specialty Lubricants & Greases: Serves as a base fluid or additive in high-performance lubricants requiring stability across a wide temperature range and compatibility with various materials.
• Surface Modification & Coatings: Imparts water repellency and anti-stick properties to surfaces in textile, paper, and architectural coatings.
• Polymers & Elastomers: Functions as a plasticizer or processing aid to improve flow and reduce viscosity in silicone and organic polymer formulations.
• Electrical/Electronic Encapsulation: Employed as a dielectric fluid or component in potting compounds and encapsulants due to its insulating properties.

Basic Information

Product Name	Polydiethylsiloxane, Triethylsiloxy Terminated
CAS No.	63148-61-8
Molecular Formula	(C4H10OSi)n•C6H15OSi
Molecular Weight	Varies (Typically 500 - 5000 g/mol)
Synonyms	Poly(diethylsiloxane), Triethylsiloxy Terminated; Diethyl Silicone Oil; Poly(diethylsiloxane) Fluid; PDES; α,ω-Triethylsiloxypoly(diethylsiloxane); Diethylpolysiloxane; Triethylsilyl-Terminated Poly(diethylsiloxane); Ethyl Silicone Fluid
EINECS	Contact for details

Quality Control

Our Polydiethylsiloxane, Triethylsiloxy Terminated is produced under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistency in viscosity, purity, and functional performance. A comprehensive Certificate of Analysis (COA) detailing key parameters is provided with every shipment to support your quality assurance protocols.

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). Keep away from strong oxidizing agents and heat sources to maintain product integrity.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Viscosity (25°C)	Specified grade (cSt)
Specific Gravity (25°C)	0.95 - 1.05
Refractive Index (25°C)	1.42 - 1.45
Assay (by GPC/SEC)	> 95% (Polymer Content)
Water Content	< 0.1% (w/w)

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