Description

3-Ethoxy-1,1,1,3,5,5,5-Heptamethylpentanetrisiloxane is a specialized organosilicon compound, specifically a functionalized trisiloxane, known for its unique combination of volatility and surface activity. This chemical matters as a versatile intermediate and performance additive, offering excellent spreading and wetting properties due to its low surface tension. It is primarily needed by manufacturers in the personal care, coatings, and agrochemical industries for formulating high-performance products where superior substrate coverage and penetration are critical.

Application

• Personal Care & Cosmetics: Acts as a volatile carrier and spreading agent in antiperspirants, deodorants, and skin care formulations, providing a dry, non-greasy feel.
• Coatings & Inks: Used as a flow and leveling additive to improve substrate wetting, reduce surface defects, and enhance gloss in paints, varnishes, and printing inks.
• Agrochemicals: Functions as an effective adjuvant and surfactant in pesticide and herbicide formulations to improve droplet spread and foliar uptake.
• Industrial Cleaners & Polishes: Serves as a key ingredient in cleaner and polish formulations for its fast-spreading and quick-evaporating characteristics.
• Textile & Leather Treatment: Employed as a softener and water repellent aid, improving the hand feel and performance of treated fabrics and leathers.
• Adhesives & Sealants: Utilized as a processing aid to control viscosity and improve the wetting of fillers and substrates.
• Silicone Fluids & Elastomers: Serves as a reactive intermediate or modifier in the synthesis of custom silicone polymers and copolymers.

Basic Information

Product Name	3-Ethoxy-1,1,1,3,5,5,5-Heptamethylpentanetrisiloxane
CAS No.	17908-27-9
Molecular Formula	C12H34O4Si3
Molecular Weight	350.73 g/mol
Synonyms	Heptamethyltrisiloxanyl Ethyl Ether; Ethoxy Heptamethyl Trisiloxane; 3-Ethoxyheptamethyltrisiloxane; Trisiloxane, 3-ethoxy-1,1,1,3,5,5,5-heptamethyl-; Ethyl Heptamethyltrisiloxanyl Ether; Silicone Fluid TSF 4450 (Trade Name Variant); ABIL®-AV 20 (Trade Name Variant); Dow Corning® 190 Fluid (Related Product)
EINECS	Contact for details

Quality Control

Our 3-Ethoxy-1,1,1,3,5,5,5-Heptamethylpentanetrisiloxane is produced under strict quality management systems. Each batch undergoes rigorous analytical testing, including GC, NMR, and FTIR, to ensure identity, purity, and consistency. We provide comprehensive Certificates of Analysis (COA) with every shipment, detailing all critical specifications. Our commitment to quality ensures the material meets the high standards required for industrial and specialty chemical applications.

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 heat, sparks, and open flame. This material is moisture-sensitive; ensure containers are kept tightly sealed to prevent contact with atmospheric moisture.

Specification

Item	Specification
Appearance	Clear, colorless liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Refractive Index (n20D)	1.390 - 1.400
Density (20°C)	0.88 - 0.92 g/mL
Volatility	Contact for details

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