Description

Methyl T Polydimethylsiloxane CAS NO 68037-74-1 is a specialized organosilicon compound, a trimethylsilyl-terminated polydimethylsiloxane, known for its unique combination of silicone fluid properties with reactive end groups. This product matters for formulators and manufacturers seeking a versatile silicone intermediate that offers excellent lubricity, thermal stability, and water repellency while providing sites for further chemical modification. Industries that need it include advanced materials, personal care, coatings, and electronics, where it serves as a key ingredient for creating tailored silicone-based products with enhanced performance characteristics.

Application

• As a reactive intermediate or chain extender in the synthesis of custom silicone polymers and copolymers.
• As a base fluid or additive in high-performance lubricants and release agents for industrial and automotive applications.
• As a key ingredient in personal care formulations, such as hair conditioners and skin care products, providing softness and shine.
• As a hydrophobic agent and film-former in protective coatings, paints, and sealants.
• As a dielectric fluid or encapsulant component in electronic and electrical applications.
• As a processing aid and surface modifier for plastics and rubber manufacturing.
• As a defoamer component in various industrial processes, including wastewater treatment and chemical production.

Basic Information

Product Name	Methyl T Polydimethylsiloxane
CAS No.	68037-74-1
Molecular Formula	(C2H6OSi)nC3H9Si (Representative)
Molecular Weight	Varies (Polymer)
Synonyms	Trimethylsilyl Terminated Polydimethylsiloxane; α,ω-Bis(trimethylsilyl)polydimethylsiloxane; PDMS, trimethylsilyl terminated; Polydimethylsiloxane, trimethylsilyl end-blocked; Dimethylsiloxane, trimethylsilyl terminated; Silicone Fluid TMS; Methyl T Silicone Oil; TMS-PDMS
EINECS	Contact for details

Quality Control

Our Methyl T Polydimethylsiloxane is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistency in viscosity, molecular weight distribution, and functional group content. Certificates of Analysis (COA) detailing key parameters 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 oxidizing agents. For long-term storage, consider under an inert atmosphere to maintain product integrity.

Specification

Item	Specification
Appearance	Clear, colorless viscous liquid
Identification (IR)	Conforms to structure
Viscosity (25°C)	Specified grade (cSt)
Specific Gravity (25°C)	0.95 - 0.98
Refractive Index (25°C)	1.400 - 1.410
Assay (Trimethylsilyl content)	> 98%
Water Content	< 0.1%

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