1,2-dimethyl-4-nitrobenzene
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. 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. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed, H312 — Harmful in contact with skin and H332 — Harmful if inhaled. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 99-51-4
- Jingsj CID
- J-48012-6
- Molecular Formula
- C8H9NO2
- Molecular Weight
- 151.163 g/mol
- Category
- Solvents
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 29 °C |
|---|---|
| Boiling Point | 264.0±9.0 °C at 760 mmHg |
| Density | 1.1±0.1 g/cm3 |
| Flash Point | 121.5±11.5 °C |
| Exact Mass | 151.063324 |
| PSA | 45.82000 |
| LogP | 2.87 |
| Vapor Pressure | 0.0±0.5 mmHg at 25°C |
| Refractive Index | 1.547 |
| Additional Property | 100 mg/L (25 ºC) |
GHS Safety & Compliance
- H302 — Harmful if swallowed
- H312 — Harmful in contact with skin
- H332 — Harmful if inhaled
Customs & Trade Information
| HS Code | 2904209090 |
|---|---|
| Summary | 2904209090 derivatives containing only nitro or only nitroso groups。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:5.5%。General tariff:30.0% |
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 and hazard statements H302 — Harmful if swallowed; H312 — Harmful in contact with skin; H332 — Harmful if inhaled.
What are the upstream and downstream products of 1,2-dimethyl-4-nitrobenzene?
For 1,2-dimethyl-4-nitrobenzene, Upstream Products: o-xylene, Mesitylene, 3,4-Dimethylaniline; Downstream Products: (4-Nitro-1,2-phenylene)dimethanol, 6-Nitro-2,3-naphthalenedicarbonitrile, N-Ethyl-3,4-dimethylaniline.
Data compiled from public chemical databases such as PubChem 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-48012-6 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.