1,1,1,3,5,5,5-Heptamethyl-3-phenyltrisiloxane

1,1,1,3,5,5,5-七甲基-3-苯基三硅氧烷

Also known as: 3-Phenylheptamethyltrisiloxane, Phenylheptamethyltrisiloxane, bis(trimethylsiloxy)phenylmethylsilane, trimethyl-(methyl-phenyl-trimethylsilyloxysilyl)oxysilane, 3-phenyl-1,1,1,3,5,5,5-heptamethyltrisiloxane, Benzene, [1,3,3,3-tetramethyl-1-[(trimethylsilyl)oxy]disiloxanyl]-, 1,1,1,3,5,5,5-heptamethyl-3-phenyl-Trisiloxane, 3-Heptamethylphenyltrisiloxane, trisiloxane,1,1,1,3,5,5,5-heptamethyl-3-phenyl-

1,1,1,3,5,5,5-Heptamethyl-3-phenyltrisiloxane (CAS 546-44-1) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C13H26O2Si3 and a molecular weight of 298.601 g/mol. It is also known as 3-Phenylheptamethyltrisiloxane, Phenylheptamethyltrisiloxane and bis(trimethylsiloxy)phenylmethylsilane. Key properties include a boiling point of 270.7±23.0 °C at 760 mmHg, a density of 0.9±0.1 g/cm3 and a flash point of 101.7±23.0 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
546-44-1
Jingsj CID
J-48122-7
Molecular Formula
C13H26O2Si3
Chinese Name
1,1,1,3,5,5,5-七甲基-3-苯基三硅氧烷
Molecular Weight
298.601 g/mol
Category
Aromatic Hydrocarbons
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point270.7±23.0 °C at 760 mmHg
Density0.9±0.1 g/cm3
Flash Point101.7±23.0 °C

Frequently Asked Questions

What is the CAS number of 1,1,1,3,5,5,5-Heptamethyl-3-phenyltrisiloxane?

The CAS number of 1,1,1,3,5,5,5-Heptamethyl-3-phenyltrisiloxane is 546-44-1.

What are the molecular formula and molecular weight of 1,1,1,3,5,5,5-Heptamethyl-3-phenyltrisiloxane?

1,1,1,3,5,5,5-Heptamethyl-3-phenyltrisiloxane has molecular formula C13H26O2Si3 and molecular weight 298.601 g/mol.

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

Last updated:

How to cite: Jingsj. "1,1,1,3,5,5,5-Heptamethyl-3-phenyltrisiloxane (CAS 546-44-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-48122-7 (accessed 2026-10-24).

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