Nitrobenzene

Nitrobenzene is an aromatic nitro compound and the simplest of the nitrobenzenes, with the chemical formula C6H5NO2. It is a water-insoluble pale yellow oil with an almond-like odor. It freezes to give greenish-yellow crystals. It is produced on a large scale from benzene as a precursor to aniline. In the laboratory, it is occasionally used as a solvent, especially for electrophilic reagents.

Nitrobenzene
Names
Preferred IUPAC name
Nitrobenzene
Other names
Nitrobenzol
Nitritebenzene
Oil of mirbane
Identifiers
3D model (JSmol)
507540
ChEBI
ChEMBL
ChemSpider
ECHA InfoCard 100.002.469
EC Number
  • 202-716-0
50357
KEGG
RTECS number
  • DA6475000
UNII
  • InChI=1S/C6H5NO2/c8-7(9)6-4-2-1-3-5-6/h1-5H Y
    Key: LQNUZADURLCDLV-UHFFFAOYSA-N Y
  • InChI=1/C6H5NO2/c8-7(9)6-4-2-1-3-5-6/h1-5H
    Key: LQNUZADURLCDLV-UHFFFAOYAA
  • c1ccc(cc1)[N+](=O)[O-]
Properties
C6H5NO2
Molar mass 123.11 g/mol
Appearance yellowish, oily liquid
Odor pungent, like paste shoe polish to almond-like
Density 1.199 g/cm3
Melting point 5.7 °C (42.3 °F; 278.8 K)
Boiling point 210.9 °C (411.6 °F; 484.0 K)
0.19 g/100 ml at 20 °C
Vapor pressure 0.3 mmHg (25°C)
-61.80·10−6 cm3/mol
Viscosity 1.8112 mPa·s
Hazards
GHS labelling:
Danger
H301, H311, H331, H351, H360, H372, H412
P201, P202, P260, P261, P264, P270, P271, P273, P280, P281, P301+P310, P302+P352, P304+P340, P308+P313, P311, P312, P314, P321, P322, P330, P361, P363, P403+P233, P405, P501
NFPA 704 (fire diamond)
3
2
1
Flash point 88 °C (190 °F; 361 K)
480 °C (896 °F; 753 K)
Explosive limits 1.8%-?
Lethal dose or concentration (LD, LC):
780 mg/kg (rat, oral)
600 mg/kg (rat, oral)
590 mg/kg (mouse, oral)
750 mg/kg (dog, oral)
NIOSH (US health exposure limits):
PEL (Permissible)
TWA 1 ppm (5 mg/m3) [skin]
REL (Recommended)
TWA 1 ppm (5 mg/m3) [skin]
IDLH (Immediate danger)
200 ppm
Related compounds
Related compounds
Aniline
Benzenediazonium chloride
Nitrosobenzene
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references
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