Description

Dodecamethylcyclohexasiloxane CAS NO 540-97-6 is a volatile, low-viscosity cyclic siloxane belonging to the organosilicon family. This compound serves as a versatile intermediate and functional fluid, prized for its excellent thermal stability, low surface tension, and high spreading coefficient. It is essential for manufacturers in the personal care, industrial lubricant, and silicone polymer sectors seeking to enhance product performance and process efficiency.

Application

• Personal Care & Cosmetics: Acts as a volatile carrier and emollient in antiperspirants, deodorants, and skin care products, providing a smooth, non-greasy feel.
• Silicone Polymer Production: Serves as a key monomer or intermediate in the synthesis of polydimethylsiloxanes (PDMS) and other silicone-based polymers and copolymers.
• Industrial Lubricants & Release Agents: Used as a base or additive in specialty lubricants, mold release agents, and dielectric fluids due to its thermal stability and water repellency.
• Surface Treatment & Coatings: Functions as a spreading agent and surface modifier to improve wetting and leveling in coatings and surface treatments.
• Cleaning & Polishing Formulations: Incorporated into automotive and furniture care products for its gloss-enhancing and protective properties.
• Chemical Synthesis: Utilized as a reactive intermediate or solvent in various organosilicon and specialty chemical syntheses.

Basic Information

Product Name	Dodecamethylcyclohexasiloxane
CAS No.	540-97-6
Molecular Formula	C12H36O6Si6
Molecular Weight	444.92 g/mol
Synonyms	Cyclomethicone D6; Dodecamethylcyclohexasiloxane; Hexamethylcyclotrisiloxane, Dodecamethyl derivative; Decamethylcyclopentasiloxane (common misnomer, correct is D6); Cyclohexasiloxane, dodecamethyl-; D6 Siloxane; Cyclic Volatile Methyl Siloxane cVMS (D6); 2,2,4,4,6,6,8,8,10,10,12,12-Dodecamethyl-1,3,5,7,9,11-hexaoxa-2,4,6,8,10,12-hexasilacyclododecane
EINECS	208-762-8

Quality Control

Our Dodecamethylcyclohexasiloxane is produced under a strict quality management system. Each batch undergoes rigorous analytical testing, including Gas Chromatography (GC), to ensure it meets precise specifications for purity and composition. Certificates of Analysis (COA) documenting identity, assay, and impurity profiles are available upon request to support your quality assurance and regulatory compliance needs.

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 oxidizing agents and heat sources. Due to its volatile nature, ensure containers are properly sealed when not in use.

Specification

Item	Specification
Appearance	Clear, colorless liquid
Identification (IR)	Conforms
Assay (GC)	≥ 98.0%
Refractive Index (n20D)	1.398 - 1.402
Specific Gravity (25°C)	0.950 - 0.970
Water Content (KF)	≤ 0.05%

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