Description

Poly(Dimethylsiloxane), Bis(12-Hydroxy-S Tearate) Terminated is a specialized organosilicon compound where the polydimethylsiloxane (PDMS) backbone is end-capped with 12-hydroxystearate groups. This unique structure provides a valuable combination of silicone fluid properties with enhanced compatibility and reactivity from the terminal hydroxy fatty acid esters. It is engineered to serve as a high-performance additive and reactive intermediate in advanced material formulations. Key industries that utilize this product include personal care, specialty coatings, and high-performance lubricants where surface modification and internal lubrication are critical.

Application

• Personal Care & Cosmetics: Acts as a premium conditioning agent, emollient, and gloss enhancer in hair care products, skin creams, and color cosmetics, offering improved spreadability and a non-greasy feel.
• Specialty Coatings & Inks: Functions as a flow and leveling agent, slip additive, and mar-resistance enhancer, improving surface properties and application performance.
• High-Performance Lubricants & Greases: Serves as a base fluid or additive to enhance thermal stability, reduce friction, and provide water repellency in specialized lubricating formulations.
• Polymer Modification: Used as a reactive plasticizer or compatibilizer in polymer blends (e.g., with polyurethanes, polyesters) to modify flexibility, surface energy, and processing characteristics.
• Release Agents: Effective in mold release applications for plastics, rubber, and composites, providing excellent demolding performance.
• Textile & Fiber Treatment: Imparts softness, lubricity, and water resistance to fibers and fabrics during processing.

Basic Information

Product Name	Poly(Dimethylsiloxane), Bis(12-Hydroxy-S Tearate) Terminated
CAS No.	133448-13-2
Molecular Formula	Contact for details
Molecular Weight	Varies by chain length (n)
Synonyms	12-Hydroxystearic Acid Terminated Polydimethylsiloxane; PDMS, Bis(12-Hydroxystearate) Terminated; Hydroxystearate-Terminated Silicone Fluid; Silicone Diol 12-Hydroxystearate Ester; Poly(dimethylsiloxane) Terminated with 12-Hydroxystearic Acid; Bis(12-hydroxystearoyloxypropyl) Polydimethylsiloxane; Hydroxy-Functional Silicone Ester; Reactive Silicone Polyol Ester
EINECS	Contact for details

Quality Control

Our Poly(Dimethylsiloxane), Bis(12-Hydroxy-S Tearate) Terminated is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistency in viscosity, hydroxyl value, and purity. Certificates of Analysis (COA) detailing key specifications are provided with every shipment to guarantee compliance with your formulation requirements.

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. Under these conditions, the product is stable for at least 24 months from the date of manufacture.

Specification

Item	Specification
Appearance	Clear, viscous liquid
Color (Gardner)	≤ 3
Viscosity @ 25°C	Specify grade
Hydroxyl Value (mg KOH/g)	Specify grade
Acid Value (mg KOH/g)	≤ 1.0
Water Content (KF)	≤ 0.1%
Identification (IR)	Conforms

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