1,2,5-trimethylnaphthalene

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. 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-33445-2
Molecular Formula: C₁₃H₁₄
Molecular Weight: 170.25000 g/mol
Category: Aromatic Hydrocarbons
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	290.2ºC at 760 mmHg
Density	0.987g/cm3
Flash Point	130.5ºC
Exact Mass	170.11000
LogP	3.76500
Refractive Index	1.594

Customs & Trade Information

HS Code	2902909090
Summary	2902909090 other aromatic hydrocarbons。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:2.0%。General tariff:30.0%

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.

What are the upstream and downstream products of 1,2,5-trimethylnaphthalene?

For 1,2,5-trimethylnaphthalene, Upstream Products: o-tolylmagnesium bromide, 2,2-Dimethylsuccinic anhydride, Manool.

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. "1,2,5-trimethylnaphthalene (CAS 641-91-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-33445-2 (accessed 2026-11-09).

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