1,3-Bis(triphenylsilyl)benzene

Also known as: m-Bis(triphenylsilyl)benzene, 1,3-Phenylenebis(triphenylsilane), UGH3, Benzene, 1,3-bis(triphenylsilyl)-, triphenyl-(3-triphenylsilylphenyl)silane

1,3-Bis(triphenylsilyl)benzene (CAS 18920-16-6) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C42H34Si2 and a molecular weight of 594.890 g/mol. Key properties include a melting point of 345-349℃, a boiling point of 654.0±51.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 321.6±23.4 °C. It is classified under GHS with signal word Warning and hazard statements H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 18920-16-6
Jingsj CID: J-1505295-7
Molecular Formula: C₄₂H₃₄Si₂
Molecular Weight: 594.890 g/mol
Category: Aromatic Hydrocarbons
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	345-349℃
Boiling Point	654.0±51.0 °C at 760 mmHg
Density	1.2±0.1 g/cm3
Flash Point	321.6±23.4 °C
Exact Mass	594.219910
LogP	14.13
Vapor Pressure	0.0±1.9 mmHg at 25°C
Refractive Index	1.670

GHS Safety & Compliance

IrritantSignal word: Warning

H319 — Causes serious eye irritation

Frequently Asked Questions

What is the CAS number of 1,3-Bis(triphenylsilyl)benzene?

The CAS number of 1,3-Bis(triphenylsilyl)benzene is 18920-16-6.

What are the molecular formula and molecular weight of 1,3-Bis(triphenylsilyl)benzene?

1,3-Bis(triphenylsilyl)benzene has molecular formula C42H34Si2 and molecular weight 594.890 g/mol.

Is 1,3-Bis(triphenylsilyl)benzene hazardous?

1,3-Bis(triphenylsilyl)benzene has GHS signal word Warning and hazard statements H319 — Causes serious eye irritation.

What are the upstream and downstream products of 1,3-Bis(triphenylsilyl)benzene?

For 1,3-Bis(triphenylsilyl)benzene, Upstream Products: Phenyllithium, Chlorotriphenylsilane, 1,3-Dibromobenzene.

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. "1,3-Bis(triphenylsilyl)benzene (CAS 18920-16-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1505295-7 (accessed 2026-11-06).

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