Description

Cyclopentasiloxane, Mixt. With .Alpha.-Hydro-.Omega.-Hydroxypolyoxy(Dimethylsilylene) is a specialized silicone-based fluid that combines the volatility and spreading properties of cyclopentasiloxane with the film-forming and conditioning characteristics of a functionalized polydimethylsiloxane. This engineered mixture is valued for its ability to deliver a non-greasy, silky-smooth feel with rapid evaporation, making it a cornerstone ingredient in high-performance personal care formulations. It is primarily sought by manufacturers in the cosmetics, skincare, and haircare industries for creating premium-feeling lotions, sunscreens, color cosmetics, and anti-aging serums.

Application

• Skin Care Formulations: Acts as a volatile carrier and emollient in anti-aging serums, moisturizers, and facial oils, providing quick absorption and a luxurious, non-tacky finish.
• Sun Care Products: Used in sunscreens and after-sun lotions to improve the spreadability of UV filters and enhance skin feel without leaving a heavy residue.
• Color Cosmetics: Serves as a key ingredient in foundations, primers, and BB creams to improve pigment dispersion, application smoothness, and long-wear comfort.
• Hair Care Products: Functions as a conditioning agent and gloss enhancer in shampoos, conditioners, and styling serums, reducing frizz and improving combability.
• Decorative Cosmetics: Imparts a smooth, blendable texture to eyeshadows, blushes, and other pressed powders.
• Pharmaceutical Topicals: Employed as a skin-friendly base or solvent in medicated creams and ointments to aid in the delivery of active ingredients.

Basic Information

Product Name	Cyclopentasiloxane, Mixt. With .Alpha.-Hydro-.Omega.-Hydroxypolyoxy(Dimethylsilylene)
CAS No.	330437-18-8
Molecular Formula	Mixture (C10H30O5Si5 and related polymers)
Molecular Weight	Mixture
Synonyms	Cyclopentasiloxane and Dimethiconol; Decamethylcyclopentasiloxane and α-Hydro-ω-hydroxypoly[oxy(dimethylsilylene)]; D5 and Dimethiconol Blend; Volatile Silicone Fluid with Silanol-Terminated PDMS; Cosmetic Grade Silicone Elastomer Blend; INCI: Cyclopentasiloxane (and) Dimethiconol; Silicone Mixture 330437-18-8
EINECS	Contact for details

Quality Control

Our Cyclopentasiloxane, Mixt. With .Alpha.-Hydro-.Omega.-Hydroxypolyoxy(Dimethylsilylene) is produced and controlled under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets the high-purity standards required for personal care and cosmetic applications. Certificates of Analysis (COA) documenting key parameters such as identity, assay, viscosity, and volatile content 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, and well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents and open flames. Under recommended storage conditions, the product remains stable for 24 months from the date of manufacture.

Specification

Item	Specification
Appearance	Clear, colorless to slightly hazy liquid
Identification (IR)	Conforms
Assay (Cyclopentasiloxane Content)	≥ 95.0%
Viscosity (25°C)	Contact for details
Refractive Index (20°C)	1.395 - 1.405
Specific Gravity (25°C)	0.95 - 0.98
Volatile Matter	≤ 2.0%

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