Description

(Acetoxyethyl)Heptamethylcyclotetrasiloxane CAS NO 18048-31-2 is a specialized organosilicon compound belonging to the cyclotetrasiloxane family, functionalized with an acetoxyethyl group. This unique structure makes it a valuable reactive intermediate and functional additive, offering enhanced compatibility and reactivity in advanced material synthesis. It is primarily sought after by manufacturers in the silicone polymer, personal care, and specialty coatings industries for developing products with tailored surface properties and performance characteristics.

Application

• Silicone Resin & Polymer Modification: Acts as a reactive monomer or cross-linking agent to introduce functional groups, modifying the hydrophobicity, adhesion, or flexibility of silicone-based polymers.
• Personal Care & Cosmetic Ingredients: Used in the formulation of high-performance hair conditioning agents, skin care products, and makeup, where it provides smooth application and improved sensory feel.
• Release Coatings & Pressure-Sensitive Adhesives (PSAs): Serves as a key component in formulating silicone release liners and modifying the release properties of adhesives.
• Surface Treatment & Coupling Agent: Enhances the bonding between organic polymers and inorganic materials like glass, metals, or minerals in composite materials.
• Specialty Lubricants & Greases: Incorporated to improve the thermal stability, water repellency, and lubricating performance of advanced synthetic lubricants.
• Pharmaceutical & Biomedical Applications: Potential use as an intermediate in the synthesis of siloxane-based drug delivery systems or biocompatible materials.

Basic Information

Product Name	(Acetoxyethyl)Heptamethylcyclotetrasiloxane
CAS No.	18048-31-2
Molecular Formula	C13H32O6Si4
Molecular Weight	404.76 g/mol
Synonyms	2-[(Heptamethylcyclotetrasiloxanyl)oxy]ethyl acetate; Acetoxyethyl Heptamethylcyclotetrasiloxane; 2-(Acetoxyethoxy)heptamethylcyclotetrasiloxane; Heptamethyl[2-(acetoxyethoxy)]cyclotetrasiloxane; Cyclotetrasiloxane, 2-(2-acetoxyethoxy)heptamethyl-; Functional cyclotetrasiloxane; Silicone intermediate D4-Acetoxyethyl
EINECS	Contact for details

Quality Control

Our (Acetoxyethyl)Heptamethylcyclotetrasiloxane is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing, including chromatography (GC/HPLC) and spectroscopic methods (IR, NMR), to ensure high purity and consistent performance. Certificates of Analysis (COA) detailing purity, identity, and key physical parameters are provided with every shipment to support your quality assurance and regulatory compliance needs.

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 acids, bases, and oxidizing agents. The product may be moisture-sensitive; ensure containers are sealed after use to prevent degradation.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 95.0%
Refractive Index (n20D)	1.405 - 1.415
Density (g/mL, 20°C)	1.00 - 1.05
Water Content (KF)	≤ 0.5%

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