4-Nitroazobenzene
4-硝基偶氮苯
Also known as: Diazene,1-(4-nitrophenyl)-2-phenyl-, (4-Nitrophenyl)phenyldiazene, Azobenzene, 4-nitro-, p-Nitroazobenzene, (E)-1-(4-nitrophenyl)-2-phenyldiazene, 4-nitro-azobenzen, MFCD00007309, EINECS 219-656-6, NSC 16043
4-Nitroazobenzene (CAS 2491-52-3) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C12H9N3O2 and a molecular weight of 227.21900 g/mol. It is also known as Diazene,1-(4-nitrophenyl)-2-phenyl-, (4-Nitrophenyl)phenyldiazene and Azobenzene, 4-nitro-. Key properties include a melting point of 132-134ºC(lit.), a boiling point of 392.9ºC at 760mmHg, a density of 1.23g/cm3 and a flash point of 191.4ºC. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 2491-52-3
- Jingsj CID
- J-22772-0
- Molecular Formula
- C12H9N3O2
- Chinese Name
- 4-硝基偶氮苯
- Molecular Weight
- 227.21900 g/mol
- Category
- Aromatic Hydrocarbons
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 132-134ºC(lit.) |
|---|---|
| Boiling Point | 392.9ºC at 760mmHg |
| Density | 1.23g/cm3 |
| Flash Point | 191.4ºC |
GHS Safety & Compliance
Frequently Asked Questions
What is the CAS number of 4-Nitroazobenzene?
The CAS number of 4-Nitroazobenzene is 2491-52-3.
What are the molecular formula and molecular weight of 4-Nitroazobenzene?
4-Nitroazobenzene has molecular formula C12H9N3O2 and molecular weight 227.21900 g/mol.
Is 4-Nitroazobenzene hazardous?
4-Nitroazobenzene 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. "4-Nitroazobenzene (CAS 2491-52-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-22772-0 (accessed 2026-10-23).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.