Silacyclohexane, 1,1-dimethyl-

Also known as: 1,1-Dimethyl-1-silacyclohexane, 1,1-Dimethylsilacyclohexane, Cyclopentamethylenedimethylsilane, Dimethylsilacyclohexane, NSC 96808

Silacyclohexane, 1,1-dimethyl- (CAS 4040-74-8) is a compound in the Solvents category listed in the Jingsj chemical database. It has the molecular formula C7H16Si and a molecular weight of 128.28700 g/mol. Key properties include a boiling point of 134ºC at 760mmHg, a density of 0.79g/cm3 and a flash point of 19.8ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 4040-74-8
Jingsj CID: J-29705-2
Molecular Formula: C₇H₁₆Si
Molecular Weight: 128.28700 g/mol
Category: Solvents
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	134ºC at 760mmHg
Density	0.79g/cm3
Flash Point	19.8ºC
Exact Mass	128.10200
LogP	2.87870
Vapor Pressure	10.2mmHg at 25°C
Refractive Index	1.4394

Customs & Trade Information

HS Code	2931900090
Summary	2931900090. other organo-inorganic compounds. VAT:17.0%. Tax rebate rate:13.0%. Supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward). MFN tariff:6.5%. General tariff:30.0%

Frequently Asked Questions

What is the CAS number of Silacyclohexane, 1,1-dimethyl-?

The CAS number of Silacyclohexane, 1,1-dimethyl- is 4040-74-8.

What are the molecular formula and molecular weight of Silacyclohexane, 1,1-dimethyl-?

Silacyclohexane, 1,1-dimethyl- has molecular formula C7H16Si and molecular weight 128.28700 g/mol.

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. "Silacyclohexane, 1,1-dimethyl- (CAS 4040-74-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-29705-2 (accessed 2026-11-09).

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