Description

Polysiloxanes CAS NO 63148-53-8 represent a versatile class of synthetic polymers characterized by a backbone of alternating silicon and oxygen atoms, offering a unique combination of thermal stability, chemical inertness, and flexibility. These properties make them indispensable as base materials for creating high-performance silicones used across numerous advanced industries. Key sectors that rely on polysiloxanes include personal care, pharmaceuticals, industrial manufacturing, and electronics, where they function as emollients, release agents, dielectric fluids, and sealants.

Application

• Silicone Fluids & Emulsions: Used as base stocks for lubricants, damping fluids, and antifoaming agents in industrial processes.
• Personal Care & Cosmetics: Act as key conditioning agents, emollients, and texture enhancers in lotions, creams, shampoos, and antiperspirants.
• Pharmaceuticals: Employed as excipients in topical formulations for their skin-protective and non-irritating properties.
• Release Agents & Molding: Provide excellent non-stick surfaces in plastic, rubber, and composite manufacturing, as well as in bakery applications.
• Electronics & Electrical: Serve as dielectric coolants, potting compounds, and encapsulants due to their thermal stability and electrical insulation.
• Textile & Fiber Treatment: Impart water repellency, softness, and improved handle to fabrics and non-wovens.
• Adhesives & Sealants: Function as key components in high-performance silicone-based adhesives, sealants, and coatings.
• Intermediate for Silicone Elastomers: Used in the production of silicone rubbers (RTV, HTV) for gaskets, medical devices, and automotive parts.

Basic Information

Product Name	Polysiloxanes
CAS No.	63148-53-8
Molecular Formula	(R2SiO)n (Variable)
Molecular Weight	Variable (Depends on chain length and substituents)
Synonyms	Polydimethylsiloxane (PDMS); Dimethyl Silicone Oil; Dimethylpolysiloxane; Silicone Fluid; Methyl Polysiloxane; Poly(oxy(dimethylsilylene)); α-ω-Trimethylsilyl Polydimethylsiloxane; Dimethicone
EINECS	Contact for details

Quality Control

Our Polysiloxanes are manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure consistency, purity, and performance. Key parameters such as viscosity, specific gravity, refractive index, and volatile matter are controlled. Certificates of Analysis (COA) documenting these specifications 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. For long-term storage under inert atmosphere, please contact us for specific recommendations.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms
Viscosity (25°C)	As per grade (e.g., 10 cSt, 100 cSt, 1000 cSt)
Specific Gravity (25°C)	0.95 - 0.98
Refractive Index (25°C)	1.400 - 1.410
Volatile Matter	≤ 1.0%
Acidity/Alkalinity	Neutral

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