Decamethylcyclopentasiloxane
Also known as: Cyclopentasiloxane, decamethyl-, D5, Cyclomethicone D5, 2,2,4,4,6,6,8,8,10,10-Decamethyl-1,3,5,7,9,2,4,6,8,10-pentaoxapentasilecane, Cyclic dimethylsiloxane pentamer
Decamethylcyclopentasiloxane (CAS 541-02-6) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C10H30O5Si5 and a molecular weight of 370.770 g/mol. Key properties include a melting point of -44°C, a boiling point of 210.0±0.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 95.6±23.0 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 541-02-6
- Jingsj CID
- J-41024-1
- Molecular Formula
- C10H30O5Si5
- Molecular Weight
- 370.770 g/mol
- Category
- Aliphatic Hydrocarbons
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | -44°C |
|---|---|
| Boiling Point | 210.0±0.0 °C at 760 mmHg |
| Density | 1.0±0.1 g/cm3 |
| Flash Point | 95.6±23.0 °C |
| Exact Mass | 370.093964 |
| PSA | 46.15000 |
| LogP | 3.59200 |
| Vapor Pressure | 0.3±0.4 mmHg at 25°C |
| Refractive Index | 1.427 |
Customs & Trade Information
| HS Code | 2931900001 |
|---|---|
| Summary | 2931900001 2,2,4,4,6,6,8,8,10,10-decamethyl-1,3,5,7,9,2,4,6,8,10-pentaoxapentasilecane。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。Lowest tariff:6.5%。General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of Decamethylcyclopentasiloxane?
The CAS number of Decamethylcyclopentasiloxane is 541-02-6.
What are the molecular formula and molecular weight of Decamethylcyclopentasiloxane?
Decamethylcyclopentasiloxane has molecular formula C10H30O5Si5 and molecular weight 370.770 g/mol.
What are the upstream and downstream products of Decamethylcyclopentasiloxane?
For Decamethylcyclopentasiloxane, Upstream Products: Water, Dichlorodimethylsilane, Hexamethyldisiloxane; Downstream Products: Dimethyldifluorosilane, Dodecamethylcyclohexasiloxane, Octamethylcyclotetrasiloxane.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Decamethylcyclopentasiloxane (CAS 541-02-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-41024-1 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.