3,3-Diphenylhexamethyltrisiloxane

3,3-二苯基六甲基三硅氧烷

Also known as: diphenyl-bis(trimethylsilyloxy)silane, 1,1,1,5,5,5-hexamethyl-3,3-diphenyltrisiloxane, hexamethyl-3,3-diphenyltrisiloxane, 1,1,1,5,5,5-hexamethyl-3,3-diphenyl-trisiloxane, 3,3-diphenyl-1,1,1,5,5,5-hexamethyl-trisiloxane, 2,2,6,6-tetramethyl-4,4-diphenyl-2,4,6-trisila-3,5-dioxaheptane

3,3-Diphenylhexamethyltrisiloxane (CAS 797-77-3) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C18H28O2Si3 and a molecular weight of 360.67000 g/mol. It is also known as diphenyl-bis(trimethylsilyloxy)silane, 1,1,1,5,5,5-hexamethyl-3,3-diphenyltrisiloxane and hexamethyl-3,3-diphenyltrisiloxane. Key properties include a boiling point of 172ºC (18 mmHg), a density of 0.98 and a flash point of 141.8ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
797-77-3
Jingsj CID
J-12564-8
Molecular Formula
C18H28O2Si3
Chinese Name
3,3-二苯基六甲基三硅氧烷
Molecular Weight
360.67000 g/mol
Category
Aromatic Hydrocarbons
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point172ºC (18 mmHg)
Density0.98
Flash Point141.8ºC

Frequently Asked Questions

What is the CAS number of 3,3-Diphenylhexamethyltrisiloxane?

The CAS number of 3,3-Diphenylhexamethyltrisiloxane is 797-77-3.

What are the molecular formula and molecular weight of 3,3-Diphenylhexamethyltrisiloxane?

3,3-Diphenylhexamethyltrisiloxane has molecular formula C18H28O2Si3 and molecular weight 360.67000 g/mol.

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

Last updated:

How to cite: Jingsj. "3,3-Diphenylhexamethyltrisiloxane (CAS 797-77-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-12564-8 (accessed 2026-10-22).

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