Description

Acetoxyheptamethylcyclotetrasiloxane is a reactive organosilicon compound belonging to the class of acetoxy-functional siloxanes. This chemical serves as a versatile intermediate and cross-linking agent, valued for its ability to introduce siloxane linkages and modify material properties. It is primarily sought after by manufacturers in the silicone polymer, sealant, adhesive, and specialty coating industries for product development and formulation.

Application

• Silicone Polymer Synthesis: A key monomer or intermediate in the production of modified polysiloxanes and silicone resins.
• Cross-linking Agent for RTV Silicones: Used in room-temperature vulcanizing (RTV) sealants and adhesives to provide moisture-cure functionality.
• Surface Treatment & Modification: Imparts hydrophobic or release properties to surfaces, fibers, and fillers.
• Adhesive & Sealant Formulations: Enhances adhesion, flexibility, and environmental resistance in high-performance formulations.
• Specialty Coating Additive: Modifies coating properties such as water repellency, gloss, and chemical resistance.
• Intermediate for Further Synthesis: Serves as a precursor for other functional siloxanes and silicone-based chemicals.

Basic Information

Product Name	Acetoxyheptamethylcyclotetrasiloxane
CAS No.	14697-86-0
Molecular Formula	C9H24O5Si4
Molecular Weight	348.65 g/mol
Synonyms	Heptamethylcyclotetrasiloxane, acetoxy-; Acetoxyheptamethylcyclotetrasiloxane; 2,2,4,4,6,6,8-Heptamethyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane-8-acetate; Acetoxy D4; Acetoxy-functional cyclotetrasiloxane; Cyclotetrasiloxane, acetoxyheptamethyl-; Reactive cyclotetrasiloxane
EINECS	Contact for details

Quality Control

Our Acetoxyheptamethylcyclotetrasiloxane is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure consistent purity and performance, meeting the specifications required for industrial and specialty chemical applications. A Certificate of Analysis (COA) detailing key parameters is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials such as strong acids and organic solvents. Recommended storage temperature is 15-25°C. The product is moisture-sensitive; keep containers tightly sealed to prevent hydrolysis.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 95.0%
Acetoxy Content	Contact for details
Specific Gravity (25°C)	Contact for details
Refractive Index (n20D)	Contact for details

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