1,2-dimethyl-4-nitrobenzene

4-硝基邻二甲苯

Also known as: 4-nitro-o-xylene, 3,4-dimethylnitrobenzene, 4-nitro-1,2-dimethylbenzene, p-nitro-o-xylene, 1,2-dimethyl-4-nitro-benzene, benzene, 1,2-dimethyl-4-nitro-, o-xylene, 4-nitro-

1,2-dimethyl-4-nitrobenzene (CAS 99-51-4) is a compound in the Solvents category listed in the Jingsj chemical database. It has the molecular formula C8H9NO2 and a molecular weight of 151.163 g/mol. It is also known as 4-nitro-o-xylene, 3,4-dimethylnitrobenzene and 4-nitro-1,2-dimethylbenzene. Key properties include a melting point of 29 °C, a boiling point of 264.0±9.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 121.5±11.5 °C. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
99-51-4
Jingsj CID
J-48012-5
Molecular Formula
C8H9NO2
Chinese Name
4-硝基邻二甲苯
Molecular Weight
151.163 g/mol
Category
Solvents
Last updated
8/21/2026

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Physicochemical Properties

Melting Point29 °C
Boiling Point264.0±9.0 °C at 760 mmHg
Density1.1±0.1 g/cm3
Flash Point121.5±11.5 °C

GHS Safety & Compliance

IrritantSignal word: Warning

Frequently Asked Questions

What is the CAS number of 1,2-dimethyl-4-nitrobenzene?

The CAS number of 1,2-dimethyl-4-nitrobenzene is 99-51-4.

What are the molecular formula and molecular weight of 1,2-dimethyl-4-nitrobenzene?

1,2-dimethyl-4-nitrobenzene has molecular formula C8H9NO2 and molecular weight 151.163 g/mol.

Is 1,2-dimethyl-4-nitrobenzene hazardous?

1,2-dimethyl-4-nitrobenzene has GHS signal word Warning.

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

Last updated:

How to cite: Jingsj. "1,2-dimethyl-4-nitrobenzene (CAS 99-51-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-48012-5 (accessed 2026-10-22).

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