H-Sil® D5 is a volatile cyclic dimethyl silicone fluid that is clear and odorless. This low-toxicity solvent evaporates completely at room temperature and leaves no residue. It is widely used in cosmetics to provide spreading, easy rub-out, and a slick, non-greasy feel to the skin. It is a good cleaning solvent for industrial applications with degreasing properties for dry cleaning and spot treatment applications.

Chemical Name: Cyclopentasiloxane

CAS Number: 541-02-6

Functions: Solvent

Chemical Family: Silicones

Synonyms: Cyclomethicone 5, Permethylcyclopentasiloxane

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Enhanced TDS

Identification & Functionality

Features & Benefits

Applications & Uses

Properties

Physical Form
Appearance
Clear water white liquid
Compatible with
Non-polar organic solvents
Typical Properties
ValueUnitsTest Method / Conditions
Refractive Index1.398--
Specific Gravity0.956--
Volatile content100.0%-
SDS Physical and Chemical Properties
ValueUnitsTest Method / Conditions
Vapor Pressure (at 20°C)0.02kPa-
Relative Density (at 25°C)0.95g/cm³-
Boiling Point211°C-
Viscocity (at 20°C)3.8cSt-
Flash Point77°CPensky Martens Closed Cup
Freezing Point8.44°C-
Insoluble inWater--
Physical StateLiquid--
Physical StateLiquid paste--
Evaporation Rate (n-Butyl Acetate = 1)max. 1--
Vapor Density (at 25°C, Air = 1)min. 1--
OdorOdorless to mild--
ColorWater-white--

Regulatory & Compliance

Packaging & Availability

Packaging Type
Supplied by

Storage & Handling

Storage & Handling Information

H-Sil silicone fluids are stable at most storageconditions, inside or outside as long as the drumsremain tightly sealed in the original container.