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trans-1,1,3,4-tetramethylcyclopentane

Also known as: 1,1c,3t,4-Tetramethyl-cyclopentan, cyclopentane,1,1,3,4-tetramethyl-,trans

trans-1,1,3,4-tetramethylcyclopentane (CAS 20309-77-7) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C9H18 and a molecular weight of 126.23900 g/mol. Key properties include a boiling point of 129.8ºC at 760 mmHg, a density of 0.755g/cm3 and a flash point of 20.5ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
20309-77-7
Jingsj CID
J-1492908-9
Molecular Formula
C9H18
Molecular Weight
126.23900 g/mol
Category
Aliphatic Hydrocarbons
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point129.8ºC at 760 mmHg
Density0.755g/cm3
Flash Point20.5ºC
Exact Mass126.14100
LogP3.07860
Vapor Pressure12.2mmHg at 25°C
Refractive Index1.414

Frequently Asked Questions

What is the CAS number of trans-1,1,3,4-tetramethylcyclopentane?

The CAS number of trans-1,1,3,4-tetramethylcyclopentane is 20309-77-7.

What are the molecular formula and molecular weight of trans-1,1,3,4-tetramethylcyclopentane?

trans-1,1,3,4-tetramethylcyclopentane has molecular formula C9H18 and molecular weight 126.23900 g/mol.

What are the upstream and downstream products of trans-1,1,3,4-tetramethylcyclopentane?

For trans-1,1,3,4-tetramethylcyclopentane, Upstream Products: 3,3,5-Trimethylcyclohexanol, 2,4,4-Trimethylcyclopentanone.

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

Last updated:

How to cite: Jingsj. "trans-1,1,3,4-tetramethylcyclopentane (CAS 20309-77-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1492908-9 (accessed 2026-11-09).

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