4-Nitroaniline

4-Nitroaniline, p-nitroaniline or 1-amino-4-nitrobenzene is an organic compound with the formula C6H6N2O2. A yellow solid, it is one of three isomers of nitroaniline. It is an intermediate in the production of dyes, antioxidants, pharmaceuticals, gasoline, gum inhibitors, poultry medicines, and as a corrosion inhibitor.

4-Nitroaniline
Names
Preferred IUPAC name
4-Nitroaniline
Systematic IUPAC name
4-Nitrobenzenamine
Other names
p-Nitroaniline
1-Amino-4-nitrobenzene
p-Nitrophenylamine
Identifiers
3D model (JSmol)
508690
ChEBI
ChEMBL
ChemSpider
ECHA InfoCard 100.002.555
EC Number
  • 202-810-1
27331
KEGG
PubChem CID
RTECS number
  • BY7000000
UNII
UN number 1661
  • InChI=1S/C6H6N2O2/c7-5-1-3-6(4-2-5)8(9)10/h1-4H,7H2 N
    Key: TYMLOMAKGOJONV-UHFFFAOYSA-N N
  • InChI=1/C6H6N2O2/c7-5-1-3-6(4-2-5)8(9)10/h1-4H,7H2
    Key: TYMLOMAKGOJONV-UHFFFAOYAW
SMILES
  • c1cc(ccc1N)N(=O)=O
Properties
C6H6N2O2
Molar mass 138.12 g/mol
Appearance yellow or brown powder
Odor faint, ammonia-like
Density 1.437 g/ml, solid
Melting point 146 to 149 °C (295 to 300 °F; 419 to 422 K) (lit.)
Boiling point 332 °C (630 °F; 605 K)
0.8 mg/ml at 18.5 °C (IPCS)
Vapor pressure 0.00002 mmHg (20°C)
Magnetic susceptibility (χ)
-66.43·10−6 cm3/mol
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
Toxic
GHS labelling:
Warning
H301, H311, H331, H373, H412
P260, P261, P264, P270, P271, P273, P280, P301+P310, P302+P352, P304+P340, P311, P312, P314, P321, P322, P330, P361, P363, P403+P233, P405, P501
NFPA 704 (fire diamond)
2
1
0
Flash point 199 °C (390 °F; 472 K)
Lethal dose or concentration (LD, LC):
LD50 (median dose)
3249 mg/kg (rat, oral)
750 mg/kg (rat, oral)
450 mg/kg (guinea pig, oral)
810 mg/kg (mouse, oral)
NIOSH (US health exposure limits):
PEL (Permissible)
TWA 6 mg/m3 (1 ppm) [skin]
REL (Recommended)
TWA 3 mg/m3 [skin]
IDLH (Immediate danger)
300 mg/m3
Safety data sheet (SDS) JT Baker
Related compounds
Related compounds
2-Nitroaniline, 3-Nitroaniline
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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