Description

(25-30% Methylhydrosiloxane) - (30-35% Octylmethylsiloxane) Dimethylsiloxane Terpolymer, 25-30 Cst is a specialized silicone copolymer engineered to provide a unique balance of reactivity, hydrophobicity, and compatibility. This terpolymer is valued for its ability to act as a reactive intermediate or a functional additive, imparting specific surface properties and enhancing material performance. It is a critical raw material for formulators and manufacturers in the personal care, coatings, and specialty chemical industries seeking to develop advanced, high-performance products.

Application

• Personal Care & Cosmetics: Acts as a key ingredient in hair conditioning formulations, skin care products, and sunscreens, providing enhanced spreadability, water repellency, and a smooth, non-greasy feel.
• Release Coatings & Molding: Serves as a reactive component in the synthesis of silicone release coatings for pressure-sensitive adhesives and as a mold release agent for rubber and plastics.
• Textile & Fiber Treatment: Used to impart durable water repellency (DWR) and softness to fabrics, nonwovens, and technical textiles.
• Adhesives & Sealants: Functions as a crosslinking agent or a property modifier to improve adhesion, flexibility, and environmental resistance in silicone-based formulations.
• Surface Modification: Employed as a surface treatment agent for minerals, pigments, and fillers to improve dispersion in organic matrices and enhance composite material properties.
• Lubricants & Greases: Utilized as a base fluid or additive in specialty lubricants requiring high thermal stability and water resistance.

Basic Information

Product Name	(25-30% Methylhydrosiloxane) - (30-35% Octylmethylsiloxane) Dimethylsiloxane Terpolymer, 25-30 Cst
CAS No.	1313730-25-4
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Methylhydrosiloxane-Octylmethylsiloxane-Dimethylsiloxane Terpolymer; Silicone Terpolymer with Methyl-H and Octyl Substituents; Reactive Silicone Fluid; Poly[methyl(octyl)siloxane-co-methylhydrosiloxane]; Functional Silicone Oil; SiH-functional Silicone Terpolymer; Hydrosilylation Crosslinker; Modified Methylhydrosiloxane Copolymer
EINECS	Contact for details

Quality Control

Our (25-30% Methylhydrosiloxane) - (30-35% Octylmethylsiloxane) Dimethylsiloxane Terpolymer is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistent composition, viscosity, and reactive Si-H content. Certificates of Analysis (COA) documenting key 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 heat, sparks, and open flame. This material is moisture-sensitive; ensure containers are sealed when not in use to prevent contact with atmospheric moisture.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Viscosity @ 25°C	25 - 30 cSt
Specific Gravity @ 25°C	0.90 - 0.98
Refractive Index @ 25°C	1.400 - 1.410
Methylhydrosiloxane Content	25 - 30 %
Octylmethylsiloxane Content	30 - 35 %
Active Hydrogen Content	Contact for details

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