1,7-dichloro-1,1,3,3,5,5,7,7-octamethyltetrasiloxane

Also known as: 1,7-dichlorooctamethyltetrasiloxane, 1,7-dichloro-1,1,3,3,5,5,7,7-octamethyl-2,4,6-trioxaheptasilane, Tetrasiloxane, 1,7-dichloro-1,1,3,3,5,5,7,7-octamethyl-, 1,7-Dichloro-1,1,3,3,5,5,7,7-octamethylheptanetetrasiloxane, chloro-[[[chloro(dimethyl)silyl]oxy-dimethylsilyl]oxy-dimethylsilyl]oxy-dimethylsilane, 1,7-dichloro-1,1,3,3,5,5,7,7-octamethyl-2,4,6-trioxaheptasilane

1,7-dichloro-1,1,3,3,5,5,7,7-octamethyltetrasiloxane (CAS 2474-02-4) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C8H24Cl2O3Si4 and a molecular weight of 351.522 g/mol. Key properties include a melting point of -62ºC(lit.), a boiling point of 246.6±23.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 87.8±0.0 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 2474-02-4
Jingsj CID: J-41020-8
Molecular Formula: C₈H₂₄Cl₂O₃Si₄
Molecular Weight: 351.522 g/mol
Category: Aliphatic Hydrocarbons
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	-62ºC(lit.)
Boiling Point	246.6±23.0 °C at 760 mmHg
Density	1.0±0.1 g/cm3
Flash Point	87.8±0.0 °C
Exact Mass	350.017944
PSA	27.69000
LogP	8.54
Appearance	liquid
Vapor Pressure	0.0±0.5 mmHg at 25°C
Refractive Index	1.428

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-dichloro-1,1,3,3,5,5,7,7-octamethyltetrasiloxane?

The CAS number of 1,7-dichloro-1,1,3,3,5,5,7,7-octamethyltetrasiloxane is 2474-02-4.

What are the molecular formula and molecular weight of 1,7-dichloro-1,1,3,3,5,5,7,7-octamethyltetrasiloxane?

1,7-dichloro-1,1,3,3,5,5,7,7-octamethyltetrasiloxane has molecular formula C8H24Cl2O3Si4 and molecular weight 351.522 g/mol.

What are the upstream and downstream products of 1,7-dichloro-1,1,3,3,5,5,7,7-octamethyltetrasiloxane?

For 1,7-dichloro-1,1,3,3,5,5,7,7-octamethyltetrasiloxane, Upstream Products: Dichlorodimethylsilane, Chlorodimethylsilane, Octamethylcyclotetrasiloxane; Downstream Products: 1,1,3,3,5,5,7,7-Octamethyltetrasiloxane, 1,7-Tetrasiloxanediol, 1,1,3,3,5,5,7,7-octamethyl-.

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-dichloro-1,1,3,3,5,5,7,7-octamethyltetrasiloxane (CAS 2474-02-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-41020-8 (accessed 2026-11-09).

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