1,2,5-trimethylnaphthalene

1,2,5-三甲基萘

Also known as: 1,2,5-Trimethyl-naphthalin, 1,2,5-Trimethylnaphtalin, 1,2,5-Trimethylnaphthalene in isooctane, 1,2,5-trimethyl-naphthalene, 1,5,6-Trimethylnaphthalin, EINECS 211-379-9, Naphthalene, 1,2,5-trimethyl-, Naphthalene,1,2,5-trimethyl, naphthalene,1,2,5-trimethyl-

1,2,5-trimethylnaphthalene (CAS 641-91-8) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C13H14 and a molecular weight of 170.25000 g/mol. It is also known as 1,2,5-Trimethyl-naphthalin, 1,2,5-Trimethylnaphtalin and 1,2,5-Trimethylnaphthalene in isooctane. Key properties include a boiling point of 290.2ºC at 760 mmHg, a density of 0.987g/cm3 and a flash point of 130.5ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
641-91-8
Jingsj CID
J-33445-9
Molecular Formula
C13H14
Chinese Name
1,2,5-三甲基萘
Molecular Weight
170.25000 g/mol
Category
Aromatic Hydrocarbons
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point290.2ºC at 760 mmHg
Density0.987g/cm3
Flash Point130.5ºC

Frequently Asked Questions

What is the CAS number of 1,2,5-trimethylnaphthalene?

The CAS number of 1,2,5-trimethylnaphthalene is 641-91-8.

What are the molecular formula and molecular weight of 1,2,5-trimethylnaphthalene?

1,2,5-trimethylnaphthalene has molecular formula C13H14 and molecular weight 170.25000 g/mol.

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

Last updated:

How to cite: Jingsj. "1,2,5-trimethylnaphthalene (CAS 641-91-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-33445-9 (accessed 2026-10-23).

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