Description

Dodecylmethylsiloxane, 2-Phenylpropylmethylsiloxane Copolymer is a specialized organosilicon polymer engineered to deliver unique surface-modifying and release properties. This copolymer matters because it combines the hydrophobic character of a long alkyl chain with the aromatic stability of a phenylpropyl group, offering a versatile performance profile. It is primarily needed by formulators in the personal care, coatings, and industrial release agent sectors seeking advanced silicone functionality.

Application

• Personal Care & Cosmetics: Acts as a premium emollient and conditioning agent in hair care products, skin creams, and sunscreens, providing a smooth, non-greasy feel.
• Industrial Release Agents: Serves as a key component in mold release formulations for rubber, plastics, and polyurethane processing, ensuring clean demolding.
• Coatings & Inks: Functions as a flow and leveling additive or a slip agent to enhance surface smoothness and mar resistance in various coating systems.
• Lubricants & Greases: Used as a high-performance additive to improve lubricity, thermal stability, and water repellency in specialty lubricants.
• Adhesive & Sealant Modifier: Imparts controlled release properties or modifies surface energy in pressure-sensitive adhesives and sealants.
• Textile & Fiber Treatment: Provides durable water repellency (DWR) and soft hand feel when applied to fabrics and non-woven materials.

Basic Information

Product Name	Dodecylmethylsiloxane, 2-Phenylpropylmethylsiloxane Copolymer
CAS No.	68037-76-3
Molecular Formula	(C13H30OSi)x(C10H16OSi)y
Molecular Weight	Variable (Polymer)
Synonyms	Dodecyl Methyl Siloxane-Phenylpropyl Methyl Siloxane Copolymer; Poly[(dodecylmethylsiloxane)-co-(2-phenylpropylmethylsiloxane)]; Silicone Copolymer DC-2503 (Trade Name Variant); Phenylpropyl Modified Silicone Fluid; Alkyl Aryl Modified Siloxane; Long-chain Alkyl Phenyl Silicone; Release Agent 68037-76-3
EINECS	Contact for details

Quality Control

Our Dodecylmethylsiloxane, 2-Phenylpropylmethylsiloxane Copolymer is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistent performance, including verification of viscosity, refractive index, and specific gravity. Certificates of Analysis (COA) documenting these 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. Under these conditions, the product is stable for at least 24 months from the date of manufacture.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow viscous liquid
Identification (IR)	Conforms to structure
Viscosity @ 25°C	100 - 5000 cSt (Grade dependent)
Refractive Index @ 25°C	1.450 - 1.480
Specific Gravity @ 25°C	0.95 - 1.05
Water Content	< 0.1% (w/w)

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