The logo of Alfa Chemistry Silicone



Catalog Number ACM541026
Product Name Decamethylcyclopentasiloxane
CAS 541-02-6
Synonyms Cyclopentasiloxane, decamethyl-;DecaMethylcyclopentasiloxane;2,2,4,4,6,6,8,8,10,10-decamethyl-1,3,5,7,9,2,4,6,8,10-pentaoxapentasilecane;D5 Cyclomethicone;
Description Decamethylcyclopentasiloxane (D5) is an organosilicon compound with the formula [(CH3)2SiO]5. It is a colorless and odorless liquid that is slightly volatile. The compound is classified as a cyclomethicone. Such fluids are commonly used in cosmetics, such as deodorants, sunblocks, hair sprays and skin care products. It is becoming more common in hair conditioners, as it makes the hair easier to brush without breakage. It is also used as part of silicone based personal lubricants. D5 is considered an emollient. In Canada, among the volume used in consumer products approximately 70% were for antiperspirants and 20% for hair care products.
IUPAC Name Decamethylcyclopentasiloxane
Molecular Weight 370.77 g/mol
Molecular Formula C10H30O5Si5
Boiling Point 101 °C
Melting Point -44ºC
Flash Point 162 °F
Purity ≥99%
Density 0.958
Solubility Insoluble in water.
Appearance Liquid
Application It widely used in cosmetics and body care products, Such as skin care, sunscreen,makeup, hair conditioning products, good compatibility with most of the alcohol and other cosmetic solvents. Be directly used as the carrier, the main raw material, also can be used as an additive; and be used in aqueous systems by the method of Emulsification.
Storage Under the room temperature and away from light
MSDS Download MSDS
COA Download COA
SpecSheet Download Spec Sheet

  Please kindly noted that this product is for research use only.

Online Inquiry

To request for sample data or to subscribe, kindly fill in this form.

Contact Us

Stay in Touch

For product inquiries, please use our online system or send an email to