Cyclopentasiloxane

Cyclopentasiloxane

Cyclopentasiloxane, commonly known as D5, is a volatile silicone-based fluid widely used in cosmetic and personal care formulations. It provides a smooth, silky feel and helps improve the spreadability and sensory properties of products. Due to its volatility, it can evaporate after application, leaving a lightweight and non-greasy feel.

Applications – Industry Wise

  • Cosmetics & Personal Care: Used in skincare, hair care, makeup, deodorants, and other personal care formulations.
  • Hair Care Industry: Used in shampoos, conditioners, hair serums, and styling products to improve smoothness and spreadability.
  • Skin Care Industry: Used in lotions, creams, serums, and other formulations to provide a silky and lightweight feel.
  • Color Cosmetics: Used in foundations, primers, and makeup formulations for improved application and texture.
  • Deodorant & Antiperspirant Industry: Used as a carrier and formulation ingredient in selected products.
  • Silicone & Specialty Chemical Industry: Used in silicone-based formulations and specialty chemical applications.
ParameterStandard Specification
Product NameCyclopentasiloxane
Common NameD5 / Decamethylcyclopentasiloxane
CAS No.541-02-6
Molecular FormulaC₁₀H₃₀O₅Si₅
Molecular Weight370.77 g/mol
AppearanceClear, Colorless Liquid
PurityTypically ≥ 99.0%
OdorOdorless or Mild Characteristic
Specific GravityApprox. 0.95 g/cm³
ViscosityLow Viscosity
VolatilityVolatile
SolubilityInsoluble in Water; Soluble in Suitable Organic/Silicone-Based Systems
StorageStore in a cool, dry and well-ventilated area away from heat and ignition sources