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3-(3,5,7,9,11,13,15-heptaisobutylpentacyclo[9.5.1.13,9.15,15.17,13]octasiloxan-1-yl)propyl methacrylate

Also known as: PSS-(1-PROPYLMETHACRYLATE)-HEPTAISOBUTYL SUBSTITUTED, METHACRYLOXYPROPYLHEPTAISOBUTYL-T8-SILSESQUIOXANE, MethacrylIsobutyl POSS, Methacrylolsobutyl POSS, 3-(heptaisobutylpentacyclo[9.5.1.13,9.15,15.17,13]octasiloxan-1-yl)propyl methacrylate, MFCD02683452

3-(3,5,7,9,11,13,15-heptaisobutylpentacyclo[9.5.1.13,9.15,15.17,13]octasiloxan-1-yl)propyl methacrylate (CAS 307531-94-8) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C35H74O14Si8 and a molecular weight of 943.63800 g/mol. Key properties include a melting point of 108-112ºC(lit.), a boiling point of >205ºC, a density of 1.09g/cm3 and a flash point of >110.0 °C. No supplier offers are currently listed; request a quote. Record last updated Nov 3, 2026.

CAS No.
307531-94-8
Jingsj CID
J-1992122-3
Molecular Formula
C35H74O14Si8
Molecular Weight
943.63800 g/mol
Category
Organic Acids
Last updated
11/3/2026
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Physicochemical Properties

Melting Point108-112ºC(lit.)
Boiling Point>205ºC
Density1.09g/cm3
Flash Point>110.0 °C
Exact Mass942.32300
PSA137.06000
LogP8.86620
Refractive Index1.483

Frequently Asked Questions

What is the CAS number of 3-(3,5,7,9,11,13,15-heptaisobutylpentacyclo[9.5.1.13,9.15,15.17,13]octasiloxan-1-yl)propyl methacrylate?

The CAS number of 3-(3,5,7,9,11,13,15-heptaisobutylpentacyclo[9.5.1.13,9.15,15.17,13]octasiloxan-1-yl)propyl methacrylate is 307531-94-8.

What are the molecular formula and molecular weight of 3-(3,5,7,9,11,13,15-heptaisobutylpentacyclo[9.5.1.13,9.15,15.17,13]octasiloxan-1-yl)propyl methacrylate?

3-(3,5,7,9,11,13,15-heptaisobutylpentacyclo[9.5.1.13,9.15,15.17,13]octasiloxan-1-yl)propyl methacrylate has molecular formula C35H74O14Si8 and molecular weight 943.63800 g/mol.

What are the upstream and downstream products of 3-(3,5,7,9,11,13,15-heptaisobutylpentacyclo[9.5.1.13,9.15,15.17,13]octasiloxan-1-yl)propyl methacrylate?

For 3-(3,5,7,9,11,13,15-heptaisobutylpentacyclo[9.5.1.13,9.15,15.17,13]octasiloxan-1-yl)propyl methacrylate, Upstream Products: 1,3,5,7,9,11,14-Heptaisobutyltricyclo[7.3.3.1(5,11)]heptasiloxane-endo-3,7,14-triol, 3-Methacryloxypropyltrimethoxysilane.

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

Last updated:

How to cite: Jingsj. "3-(3,5,7,9,11,13,15-heptaisobutylpentacyclo[9.5.1.13,9.15,15.17,13]octasiloxan-1-yl)propyl methacrylate (CAS 307531-94-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1992122-3 (accessed 2026-11-09).

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