Description

Butyl Terminated Polydimethylsiloxane, 10-15 Cst is a specialized organosilicon fluid featuring a reactive butyl group at each polymer chain end. This unique termination provides enhanced compatibility with organic systems and offers a versatile platform for chemical modification, distinguishing it from standard hydroxyl-terminated silicones. It is a critical intermediate and functional additive for formulators in the personal care, coatings, and specialty lubricants industries seeking to improve surface properties, release characteristics, and processability. Its controlled viscosity of 10-15 centistokes ensures predictable handling and performance in demanding applications.

Application

• Personal Care & Cosmetics: Acts as a conditioning agent, emollient, and gloss enhancer in hair care products, skin creams, and sunscreens, offering a non-greasy, silky feel.
• Release Agents & Mold Lubricants: Used in polyurethane, rubber, and plastic molding processes to facilitate clean part release from molds.
• Surface Modification & Coatings: Imparts water repellency, slip, and mar resistance to coatings, inks, and treated surfaces.
• Specialty Lubricants & Greases: Serves as a base fluid or additive in lubricants requiring thermal stability, low volatility, and compatibility with plastics and elastomers.
• Pharmaceutical & Medical Device Coatings: Utilized in controlled-release drug delivery systems and as a biocompatible coating for medical devices.
• Adhesive & Sealant Modifiers: Functions as a plasticizer and flow control agent, improving the flexibility and application properties of silicone and organic sealants.
• Chemical Intermediate: The reactive butyl termini serve as sites for further synthesis of custom silicone copolymers and grafted materials.
• Fiber & Textile Treatment: Applied as a softener and water-repellent finish for synthetic and natural fibers.

Basic Information

Product Name	Butyl Terminated Polydimethylsiloxane, 10-15 Cst
CAS No.	1417861-92-7
Molecular Formula	C4H9-[Si(CH3)2O]n-Si(CH3)2-C4H9
Molecular Weight	Varies (Polymer)
Synonyms	α,ω-Dibutylpolydimethylsiloxane; Butyl-Terminated PDMS; Butyl Silicone Fluid; Dibutyl-Terminated Dimethyl Silicone Oil; Poly(dimethylsiloxane), butyl terminated; PDMS, butyl end-capped; Silicone fluid DB; Butyl endblocked polydimethylsiloxane
EINECS	Contact for details

Quality Control

Our Butyl Terminated Polydimethylsiloxane is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing, including viscosity, refractive index, and functional group analysis, to ensure consistent purity and performance. We provide a detailed Certificate of Analysis (COA) with every shipment, confirming compliance with agreed specifications. Our quality commitment supports applications in regulated industries, and we can tailor specifications to meet specific customer 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 and heat sources. Under these conditions, the product has excellent shelf stability.

Specification

Item	Specification
Appearance	Clear, colorless liquid
Viscosity @ 25°C	10 - 15 cSt
Specific Gravity @ 25°C	0.92 - 0.96
Refractive Index @ 25°C	1.400 - 1.405
Flash Point	> 150 °C
Volatile Content	< 1.0 %
Identification (IR)	Conforms

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