1,3-Diethoxy-1,1,3,3-tetramethyldisiloxane
Also known as: 1,1,3,3-Tetramethyl-1,3-diethoxydisiloxane, 1,3-Diethoxytetramethyldisiloxane, Tetramethyldiethoxydisiloxane, Disiloxane, 1,3-diethoxy-1,1,3,3-tetramethyl-, ethoxy-[ethoxy(dimethyl)silyl]oxy-dimethylsilane, MFCD00053754, EINECS 242-298-7
1,3-Diethoxy-1,1,3,3-tetramethyldisiloxane (CAS 18420-09-2) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C8H22O3Si2 and a molecular weight of 222.42900 g/mol. Key properties include a melting point of -134ºC, a boiling point of 183.3ºC at 760 mmHg, a density of 0.883 g/mL at 25ºC(lit.) and a flash point of 43.3 °C. It is classified under GHS with signal word Warning and hazard statements H226 — Flammable liquid and vapour, H315 — Causes skin irritation and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Nov 2, 2026.
- CAS No.
- 18420-09-2
- Jingsj CID
- J-6708-3
- Molecular Formula
- C8H22O3Si2
- Molecular Weight
- 222.42900 g/mol
- Category
- Aliphatic Hydrocarbons
- Last updated
- 11/2/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | -134ºC |
|---|---|
| Boiling Point | 183.3ºC at 760 mmHg |
| Density | 0.883 g/mL at 25ºC(lit.) |
| Flash Point | 43.3 °C |
| Exact Mass | 222.11100 |
| PSA | 27.69000 |
| LogP | 2.47960 |
| Vapor Pressure | 1.06mmHg at 25°C |
| Refractive Index | n20/D 1.389(lit.) |
GHS Safety & Compliance
- H226 — Flammable liquid and vapour
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
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 1,3-Diethoxy-1,1,3,3-tetramethyldisiloxane?
The CAS number of 1,3-Diethoxy-1,1,3,3-tetramethyldisiloxane is 18420-09-2.
What are the molecular formula and molecular weight of 1,3-Diethoxy-1,1,3,3-tetramethyldisiloxane?
1,3-Diethoxy-1,1,3,3-tetramethyldisiloxane has molecular formula C8H22O3Si2 and molecular weight 222.42900 g/mol.
Is 1,3-Diethoxy-1,1,3,3-tetramethyldisiloxane hazardous?
1,3-Diethoxy-1,1,3,3-tetramethyldisiloxane has GHS signal word Warning and hazard statements H226 — Flammable liquid and vapour; H315 — Causes skin irritation; H319 — Causes serious eye irritation.
What are the upstream and downstream products of 1,3-Diethoxy-1,1,3,3-tetramethyldisiloxane?
For 1,3-Diethoxy-1,1,3,3-tetramethyldisiloxane, Upstream Products: Dichlorodimethylsilane, Diethoxydimethylsilane, Ethanol; Downstream Products: Dodecamethylpentasiloxane.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "1,3-Diethoxy-1,1,3,3-tetramethyldisiloxane (CAS 18420-09-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-6708-3 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.