1,3-Bis(chloromethyldimethylsiloxy)benzene

1,3-双(氯甲基二甲基硅氧基)苯

Also known as: 1,3-Bis(chloromethyldimethylsilyloxy)benzene, 1,3-bis(chloromethyldimethylsilyloxy)-benzene, chloromethyl-[3-[chloromethyl(dimethyl)silyl]oxyphenoxy]-dimethylsilane, Benzene, 1,3-bis[[(chloromethyl)dimethylsilyl]oxy]-, [1,3-Phenylenebis(oxy)]bis[(chloromethyl)(dimethyl)silane]

1,3-Bis(chloromethyldimethylsiloxy)benzene (CAS 203785-58-4) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C12H20Cl2O2Si2 and a molecular weight of 323.363 g/mol. It is also known as 1,3-Bis(chloromethyldimethylsilyloxy)benzene, 1,3-bis(chloromethyldimethylsilyloxy)-benzene and chloromethyl-[3-[chloromethyl(dimethyl)silyl]oxyphenoxy]-dimethylsilane. Key properties include a melting point of <20ºC, a boiling point of 294.6±35.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 110.3±18.1 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
203785-58-4
Jingsj CID
J-1523843-6
Molecular Formula
C12H20Cl2O2Si2
Chinese Name
1,3-双(氯甲基二甲基硅氧基)苯
Molecular Weight
323.363 g/mol
Category
Aromatic Hydrocarbons
Last updated
8/21/2026

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Physicochemical Properties

Melting Point<20ºC
Boiling Point294.6±35.0 °C at 760 mmHg
Density1.1±0.1 g/cm3
Flash Point110.3±18.1 °C

Frequently Asked Questions

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

The CAS number of 1,3-Bis(chloromethyldimethylsiloxy)benzene is 203785-58-4.

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

1,3-Bis(chloromethyldimethylsiloxy)benzene has molecular formula C12H20Cl2O2Si2 and molecular weight 323.363 g/mol.

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

Last updated:

How to cite: Jingsj. "1,3-Bis(chloromethyldimethylsiloxy)benzene (CAS 203785-58-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1523843-6 (accessed 2026-10-26).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.