Description

Cyclicdimethylpolysiloxane CAS NO 69430-24-6 is a versatile organosilicon compound belonging to the cyclomethicone family, characterized by its cyclic molecular structure and low viscosity. This chemical is valued for its excellent volatility, spreading properties, and inert nature, making it a crucial intermediate and functional additive in high-performance formulations. It is primarily sought after by manufacturers in the personal care, cosmetics, pharmaceutical, and industrial sectors for its ability to enhance product feel, stability, and processing characteristics.

Application

• Personal Care & Cosmetics: A key volatile carrier and emollient in antiperspirants, deodorants, hair conditioners, skin creams, and sunscreens, where it provides a non-greasy, silky feel and facilitates even application.
• Pharmaceuticals: Used as a lubricant in tablet manufacturing and as a carrier or solvent in topical drug delivery systems, taking advantage of its high purity and volatility.
• Industrial Lubricants & Release Agents: Serves as a component in specialty lubricants, mold release agents for plastics and rubber, and as a dielectric fluid due to its thermal stability and hydrophobic properties.
• Chemical Synthesis: Acts as a valuable intermediate or reactant in the production of modified silicones, silicone resins, and other specialty organosilicon materials.
• Polishes & Coatings: Incorporated into automotive, furniture, and metal polishes to provide gloss, water repellency, and easy wipe-off characteristics.
• Textile & Fiber Treatment: Used to impart softness, water repellency, and improved hand feel to fabrics and non-woven materials.

Basic Information

Item	Details
Product Name	Cyclicdimethylpolysiloxane
CAS No.	69430-24-6
Molecular Formula	(C2H6OSi)n
Molecular Weight	Variable (based on 'n', the number of repeating units)
Synonyms	Cyclomethicone; Cyclic dimethylsiloxane; Decamethylcyclopentasiloxane (D5); Dodecamethylcyclohexasiloxane (D6); Octamethylcyclotetrasiloxane (D4); Cyclic silicone oil; Cyclic volatile methylsiloxane (cVMS); Polydimethylcyclosiloxane
EINECS	Contact for details

Quality Control

Our Cyclicdimethylpolysiloxane is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, viscosity, and volatile content. Certificates of Analysis (COA) documenting key parameters are available upon request. We can support compliance with relevant standards for cosmetic (ISO 22716), pharmaceutical, and industrial applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, well-ventilated area at room temperature (15-25°C/59-77°F). Due to its highly volatile nature, keep containers tightly sealed when not in use to prevent evaporation and contamination. Keep away from open flames, heat sources, and strong oxidizing agents.

Specification

Item	Specification
Appearance	Clear, colorless liquid
Identification (IR)	Conforms
Assay (GC)	≥ 98.0%
Viscosity (25°C)	Contact for details
Refractive Index (n20D)	Contact for details
Specific Gravity (25°C)	Contact for details
Water Content (KF)	≤ 0.1%
Residue on Ignition	≤ 0.1%

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