Description

Perfluorooctylethyl Trisiloxane is a high-performance organosilicon compound that combines the low surface energy of fluorocarbons with the spreading and wetting properties of siloxanes. This unique molecular architecture makes it an exceptionally effective surface modifier and wetting agent for challenging substrates. It is primarily sought after by formulators in the coatings, electronics, and specialty chemical industries where superior surface activity, chemical resistance, and release properties are critical. The compound is supplied under stringent quality control to ensure batch-to-batch consistency for demanding industrial applications.

Application

• As a key additive in high-performance coatings and paints to improve leveling, wetting, and substrate adhesion, particularly on low-energy surfaces.
• As a surface treatment agent for electronic components and optical films to impart water, oil, and dust repellency.
• As a powerful wetting and spreading agent in specialty cleaning formulations and fire-fighting foams for hydrocarbon fires.
• As a mold release agent and internal lubricant in the production of advanced polymers and composites.
• As an ingredient in textile and leather treatments to provide durable stain and water resistance.
• In the formulation of personal care products, such as cosmetics and sunscreens, where water resistance and a smooth feel are desired.
• For research and development of novel superhydrophobic and oleophobic surfaces.

Basic Information

Product Name	Perfluorooctylethyl Trisiloxane
CAS No.	163921-85-5
Molecular Formula	C20H19F17O2Si3
Molecular Weight	674.61 g/mol
Synonyms	Trisiloxane, 1,1,1,3,5,5,5-heptamethyl-3-[(3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluorooctyl)ethyl]; 1,1,1,3,5,5,5-Heptamethyl-3-[(3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluorooctyl)ethyl]trisiloxane; Fluorinated trisiloxane; Perfluorooctylethyl substituted trisiloxane; F-octyl-Et-trisiloxane; (Tridecafluoro-1,1,2,2-tetrahydrooctyl)ethylheptamethyltrisiloxane; Silicone surfactant FS-1265 (related trade product).
EINECS	Contact for details

Quality Control

Our Perfluorooctylethyl Trisiloxane is manufactured under a strict quality management system. Each production batch undergoes comprehensive analytical testing, including assay by GC, to ensure it meets defined purity and performance specifications. We provide full traceability and a Certificate of Analysis (COA) with every shipment, detailing key parameters such as identity, purity, and impurity profiles. Our quality commitment ensures the reliability and consistency required for your critical formulations.

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, strong acids, and strong bases. Under recommended storage conditions, the product is stable for at least 24 months from the date of manufacture.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to reference spectrum
Assay (GC)	≥ 97.0%
Density (25°C)	1.30 - 1.35 g/mL
Refractive Index (n20D)	1.335 - 1.345
Water Content (KF)	≤ 0.1%

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