Description

3-(3-Acetoxypropyl)Heptamethyltrisiloxane is a specialized organosilicon compound featuring a reactive acetoxypropyl group attached to a trisiloxane backbone. This unique structure makes it a valuable intermediate and functional additive, offering a balance of silicone fluid properties with a site for further chemical modification. It is primarily utilized in the synthesis of advanced silicone polymers and as a coupling agent or modifier in specialty formulations. Key industries that require this chemical include personal care, coatings, adhesives, and advanced material science.

Application

• Silicone Polymer Synthesis: Serves as a key monomer or chain extender in the production of custom silicone copolymers and resins.
• Personal Care & Cosmetics: Acts as a conditioning agent, emollient, or reactive intermediate in hair care and skincare formulations.
• Adhesives & Sealants: Functions as a plasticizer, flow control agent, or adhesion promoter in high-performance silicone-based systems.
• Coatings & Surface Treatments: Used as a crosslinking agent or modifier to enhance surface wetting, gloss, and durability.
• Release Agents: Employed in the formulation of non-stick coatings for industrial molding and casting processes.
• Fiber & Textile Treatment: Imparts softness, water repellency, and lubricity to synthetic and natural fibers.

Basic Information

Product Name	3-(3-Acetoxypropyl)Heptamethyltrisiloxane
CAS No.	18044-09-2
Molecular Formula	C14H34O4Si3
Molecular Weight	350.68 g/mol
Synonyms	Heptamethyl-3-(3-acetoxypropyl)trisiloxane; 1,1,1,3,5,5,5-Heptamethyl-3-(3-acetoxypropyl)trisiloxane; 3-Acetoxypropylheptamethyltrisiloxane; Trisiloxane, 3-(3-acetoxypropyl)heptamethyl-; Acetoxypropyl Trisiloxane; (3-Acetoxypropyl)tris(trimethylsiloxy)silane; Silicone Fluid AK 350; A silicone intermediate with acetoxy functionality
EINECS	Contact for details

Quality Control

Our products undergo rigorous quality testing to ensure compliance with industry standards and batch-to-batch consistency. Quality is verified through analytical methods including Gas Chromatography (GC) and Infrared Spectroscopy (IR) to confirm identity, purity, and absence of critical impurities. Certificates of Analysis (COA) detailing all test results are available upon request. We adhere to a quality management system to support our commitment to reliable supply for industrial and R&D 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 (hygroscopic); ensure containers are sealed tightly after use to prevent degradation.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to reference spectrum
Assay (GC)	≥ 95.0%
Density (at 25°C)	0.95 - 0.98 g/mL
Refractive Index (n20D)	1.405 - 1.415

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