Description

Tetratriacontamethylcycloheptadecasiloxane is a high molecular weight, cyclic siloxane polymer, also known as a specific silicone fluid. This compound is valued for its exceptional thermal stability, low surface tension, and high compressibility, making it a critical functional fluid and additive in advanced manufacturing. It is primarily utilized in industries requiring high-performance lubricants, release agents, and specialized polymer modifiers.

Application

• High-Temperature Lubricants & Greases: Serves as a base fluid or additive for lubricants requiring extreme thermal and oxidative stability.
• Mold Release Agents: Used in plastic, rubber, and composite manufacturing to provide excellent surface release properties.
• Silicone Polymer Modification: Acts as a plasticizer or processing aid to modify the rheology and properties of silicone elastomers and resins.
• Dielectric & Heat Transfer Fluids: Employed in specialized electrical or thermal management applications due to its insulating properties and thermal stability.
• Personal Care & Cosmetics: Functions as an emollient and conditioning agent in high-end cosmetic formulations, providing a smooth, non-greasy feel.
• Surface Treatments & Coatings: Used to impart water repellency, gloss, and smoothness to various substrates.

Basic Information

Product Name	Tetratriacontamethylcycloheptadecasiloxane
CAS No.	150026-96-3
Molecular Formula	C34H102O17Si17
Molecular Weight	~1253.1 g/mol
Synonyms	Cycloheptadecasiloxane, tetratriacontamethyl-; D17 Silicone Fluid; Cyclic Siloxane D17; Octadecamethylcyclononasiloxane (related cyclic structure); Heptadecamethylcyclooctasiloxane homologue; Cyclomethicone D17; Decamethylcyclopentasiloxane polymer; Polydimethylcyclosiloxane
EINECS	Contact for details

Quality Control

Our Tetratriacontamethylcycloheptadecasiloxane is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure consistency, purity, and performance. Certificates of Analysis (COA) detailing key parameters such as assay, viscosity, and refractive index are available upon request to support your quality assurance protocols.

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 acids, bases, and oxidizing agents. For long-term storage, consider under an inert atmosphere to prevent moisture absorption and potential viscosity changes.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 95.0%
Viscosity @ 25°C	Contact for details
Refractive Index @ 20°C	Contact for details
Specific Gravity @ 25°C	Contact for details
Water Content (KF)	≤ 0.1%

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