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Decamethylcyclopentasiloxane (D5)

Dear visitors/customers,


As a professional D5 factory, we always aim at producing high-quality decamethylcyclopentasiloxane, dimethyl silicone oil and other PDMS silicone liquid to fulfill our customers' general & special requirements.



Introduction to Decamethylcyclopentasiloxane / D5

Chemical name : Cyclopentasiloxane / Decamethylcyclopentasiloxane / D5 / Cyclomethicone D5

CAS No. :   541-02-6

HS Code:  2931900001

EINECS :  208-764-9

Molecular Formula: C10H30O5Si5

Appearance : colorless transparent liquid

D5 is a volatile polydimethylcyclosiloxane, mainly composed of decamethylcyclopentasiloxane. The product is clear, odorless and greasy.Customisation and Free Sample of D5 is available.

Technical Parameters 




Colorless and transparent

Chroma (Cobalt platinum color number) ≤


Refractive index (25)


D5 Mass fraction ≥



Performance and Application

It is a volatile polydimethylcyclosiloxane, mainly composed of decamethylcyclopentasiloxane. It is colorless and transparent liquid, with low flow point and fast reaction speed. It has good compatibility with most alcohols and other cosmetic solvents and is widely used in cosmetics and human body care products, such as skin care, sunscreen, makeup, hair conditioning products. It can be directly used as a carrier, the main raw materials, can also be used as additives; It can also be used in water - based systems by emulsification.


Application Industry

Here lists some applications of Decamethylcyclopentasiloxane (D5), if you want to know more about applications of silicone liquid, you could find more applications in here.

1. Decamethylcyclopentasiloxane in cosmetics: skin care lotion, antiperspirant, shampoo

2. Silicone oil

3. Cyclomethicone for skin


Packaging and Storage

Packed in plastic / iron drums, net weight 200kg/drum, or International Bulk Container, net weight 1000kg/IBC. Store in a cool, dry, well-ventilated area and keep away from oxidant, acid and alkali. The storage area should be equipped with the corresponding species and quantity of fire equipment and leakage emergency equipment. Handling according to hazardous substances. Be careful when loading and unloading to avoid damages of the package.

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