1,7-Tetrasiloxanediol, 1,1,3,3,5,5,7,7-octamethyl-

Also known as: Octamethyl-1,7-tetrasiloxanediol, 1,7-Tetrasiloxanediol, 1,1,3,3,5,5,7,7-octamethyl-, hydroxy-[[[hydroxy(dimethyl)silyl]oxy-dimethylsilyl]oxy-dimethylsilyl]oxy-dimethylsilane, 1,1,3,3,5,5,7,7-Octamethyltetrasiloxane-1,7-diol, 1,1,3,3,5,5,7,7-Octamethyl-2,4,6-trioxa-1,3,5,7-tetrasilaheptane-1,7-diol, 1,7-dihydroxyoctamethyltetrasiloxane, 1,7-dihydroxy-1,1,3,3,5,5,7,7-octamethyltetrasiloxane, Octamethyltetrasiloxane-1,7-diol, Simethicone Impurity 4, 1,1,3,3,5,5,7,7-octamethyl-7-tetrasiloxanediol, 1,1,3,3,5,5,7,7-Octamethyl-tetrasiloxan-1,7-diol

1,7-Tetrasiloxanediol, 1,1,3,3,5,5,7,7-octamethyl- (CAS 3081-07-0) is a compound in the Alcohols category listed in the Jingsj chemical database. It has the molecular formula C8H26O5Si4 and a molecular weight of 314.63100 g/mol. Key properties include a boiling point of 267.2ºC at 760mmHg, a density of 0.99g/cm3 and a flash point of 115.4ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 3081-07-0
Jingsj CID: J-1602262-1
Molecular Formula: C₈H₂₆O₅Si₄
Molecular Weight: 314.63100 g/mol
Category: Alcohols
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	267.2ºC at 760mmHg
Density	0.99g/cm3
Flash Point	115.4ºC
Exact Mass	314.08600
PSA	68.15000
LogP	1.82800
Refractive Index	1.431

Customs & Trade Information

HS Code	2934999090
Summary	2934999090. other heterocyclic compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of 1,7-Tetrasiloxanediol, 1,1,3,3,5,5,7,7-octamethyl-?

The CAS number of 1,7-Tetrasiloxanediol, 1,1,3,3,5,5,7,7-octamethyl- is 3081-07-0.

What are the molecular formula and molecular weight of 1,7-Tetrasiloxanediol, 1,1,3,3,5,5,7,7-octamethyl-?

1,7-Tetrasiloxanediol, 1,1,3,3,5,5,7,7-octamethyl- has molecular formula C8H26O5Si4 and molecular weight 314.63100 g/mol.

What are the upstream and downstream products of 1,7-Tetrasiloxanediol, 1,1,3,3,5,5,7,7-octamethyl-?

For 1,7-Tetrasiloxanediol, 1,1,3,3,5,5,7,7-octamethyl-, Upstream Products: 1,7-dichloro-1,1,3,3,5,5,7,7-octamethyltetrasiloxane, Methanol.

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

Last updated: 8/21/2026

How to cite: Jingsj. "1,7-Tetrasiloxanediol, 1,1,3,3,5,5,7,7-octamethyl- (CAS 3081-07-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1602262-1 (accessed 2026-11-09).

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