Dodecamethylpentasiloxane
Also known as: 1,1,1,3,3,5,5,7,7,9,9,9-Dodecamethylpentasiloxane, Pentasiloxane, dodecamethyl-, Dodecamethyl-2,4,6,8-tetraoxa-1,3,5,7,9-pentasilanonane, Dodecamethylnonanepentasiloxane, Penta(dimethylsiloxane), bis[[dimethyl(trimethylsilyloxy)silyl]oxy]-dimethylsilane, dodecamethyl-pentasiloxane
Dodecamethylpentasiloxane (CAS 141-63-9) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C12H36O4Si5 and a molecular weight of 384.839 g/mol. Key properties include a melting point of −81 °C(lit.), a boiling point of 284.4±23.0 °C at 760 mmHg, a density of 0.9±0.1 g/cm3 and a flash point of 117.4±23.0 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 141-63-9
- Jingsj CID
- J-24056-2
- Molecular Formula
- C12H36O4Si5
- Molecular Weight
- 384.839 g/mol
- Category
- Aliphatic Hydrocarbons
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | −81 °C(lit.) |
|---|---|
| Boiling Point | 284.4±23.0 °C at 760 mmHg |
| Density | 0.9±0.1 g/cm3 |
| Flash Point | 117.4±23.0 °C |
| Exact Mass | 384.145996 |
| PSA | 36.92000 |
| LogP | 8.31 |
| Vapor Pressure | 0.0±0.6 mmHg at 25°C |
| Refractive Index | 1.417 |
Activity & Biological Data
| Additional Information | [1]. Luuc Keulen, et al. Bubble-Point Measurements and Modeling of Binary Mixtures of Linear Siloxanes. J Chem Eng Data. 2018;63:10.1021/acs.jced.8b00200. [2]. Chen Zha, et al. Toxicities of Selected Essential Oils, Silicone Oils, and Paraffin Oil Against the Common Bed Bug (Hemiptera: Cimicidae). J Econ Entomol. 2018 Feb 9;111(1):170-177. |
|---|
Customs & Trade Information
| HS Code | 2934999090 |
|---|---|
| Summary | 2934999090. other heterocyclic compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of Dodecamethylpentasiloxane?
The CAS number of Dodecamethylpentasiloxane is 141-63-9.
What are the molecular formula and molecular weight of Dodecamethylpentasiloxane?
Dodecamethylpentasiloxane has molecular formula C12H36O4Si5 and molecular weight 384.839 g/mol.
What are the upstream and downstream products of Dodecamethylpentasiloxane?
For Dodecamethylpentasiloxane, Upstream Products: Chlorotrimethylsilane, 1,3-Diethoxy-1,1,3,3-tetramethyldisiloxane, Hexamethyldisiloxane.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Dodecamethylpentasiloxane (CAS 141-63-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-24056-2 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.