1,1,3,3-Tetraphenyl-1,3-dimethyldisiloxane

Also known as: 1,3-Dimethyl-1,1,3,3-tetraphenyldisiloxane, Bis(methyldiphenylsilyl) oxide, Tetraphenyldimethyldisiloxane, Disiloxane, 1,3-dimethyl-1,1,3,3-tetraphenyl-, Dimethyltetraphenyldisiloxane, methyl-[methyl(diphenyl)silyl]oxy-diphenylsilane

1,1,3,3-Tetraphenyl-1,3-dimethyldisiloxane (CAS 807-28-3) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C26H26OSi2 and a molecular weight of 410.655 g/mol. Key properties include a melting point of 46-49ºC, a boiling point of 441.4±18.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 181.0±21.6 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 807-28-3
Jingsj CID: J-944249-3
Molecular Formula: C₂₆H₂₆OSi₂
Molecular Weight: 410.655 g/mol
Category: Aromatic Hydrocarbons
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	46-49ºC
Boiling Point	441.4±18.0 °C at 760 mmHg
Density	1.1±0.1 g/cm3
Flash Point	181.0±21.6 °C
Exact Mass	410.152222
PSA	9.23000
LogP	9.96
Vapor Pressure	0.0±1.0 mmHg at 25°C
Refractive Index	1.599

Frequently Asked Questions

What is the CAS number of 1,1,3,3-Tetraphenyl-1,3-dimethyldisiloxane?

The CAS number of 1,1,3,3-Tetraphenyl-1,3-dimethyldisiloxane is 807-28-3.

What are the molecular formula and molecular weight of 1,1,3,3-Tetraphenyl-1,3-dimethyldisiloxane?

1,1,3,3-Tetraphenyl-1,3-dimethyldisiloxane has molecular formula C26H26OSi2 and molecular weight 410.655 g/mol.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "1,1,3,3-Tetraphenyl-1,3-dimethyldisiloxane (CAS 807-28-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-944249-3 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.