5-Ethoxy-1,1,1,3,3,5,7,7,9,9,9-undecamethylpentasiloxane

5-乙氧基-1,1,1,3,3,5,7,7,9,9,9-十一甲基五硅氧烷

5-Ethoxy-1,1,1,3,3,5,7,7,9,9,9-undecamethylpentasiloxane (CAS 118904-40-8) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C13H38O5Si5 and a molecular weight of 414.86 g/mol. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 118904-40-8
Jingsj CID: J-181773-7
Molecular Formula: C₁₃H₃₈O₅Si₅
Chinese Name: 5-乙氧基-1,1,1,3,3,5,7,7,9,9,9-十一甲基五硅氧烷
Molecular Weight: 414.86 g/mol
Category: Aliphatic Hydrocarbons
Last updated: 8/21/2026

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Frequently Asked Questions

What is the CAS number of 5-Ethoxy-1,1,1,3,3,5,7,7,9,9,9-undecamethylpentasiloxane?

The CAS number of 5-Ethoxy-1,1,1,3,3,5,7,7,9,9,9-undecamethylpentasiloxane is 118904-40-8.

What are the molecular formula and molecular weight of 5-Ethoxy-1,1,1,3,3,5,7,7,9,9,9-undecamethylpentasiloxane?

5-Ethoxy-1,1,1,3,3,5,7,7,9,9,9-undecamethylpentasiloxane has molecular formula C13H38O5Si5 and molecular weight 414.86 g/mol.

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

Last updated: 8/21/2026

How to cite: Jingsj. "5-Ethoxy-1,1,1,3,3,5,7,7,9,9,9-undecamethylpentasiloxane (CAS 118904-40-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-181773-7 (accessed 2026-10-23).

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