Agent Name
CAS Number
Major Category
Nitrogen Compounds
2-Nitroaniline formula graphical representation
1-Amino-2-nitrobenzene; 2-Aminonitrobenzene; 2-Nitrobenzenamine; Aniline, o-nitro-; Azoene Fast Orange GR Base; Azoene Fast Orange GR Salt; Azofix Orange GR Salt; Azogene Fast Orange GR; Azoic Diazo Component 6; Benzenamine, 2-nitro-; Brentamine Fast Orange GR Base; Brentamine Fast Orange GR Salt; C.I. 37025; C.I. Azoic Diazo Component 6; CI 37025; CI Azoic Diazo Component 6; Devol Orange B; Devol Orange Salt B; Diazo Fast Orange GR; Fast Orange Base GR; Fast Orange Base JR; Fast Orange GR Base; Fast Orange GR Salt; Fast Orange O Base; Fast Orange O Salt; Fast Orange Salt GR; Fast Orange Salt JR; Hiltonil Fast Orange GR Base; Hiltosal Fast Orange GR Salt; Hindasol Orange GR Salt; Natasol Fast Orange GR Salt; ONA; Orange Base Ciba II; Orange Base IRGA II; Orange GRS Salt; Orange Salt Ciba II; Orange Salt IRGA II; Orthonitroaniline; o-Aminonitrobenzene; o-Nitraniline; o-Nitroaniline; [ChemIDplus] UN1661
Orange-yellow solid; [Merck Index] Darkens on exposure to light; [CHEMINFO] Orange crystalline solid; Soluble in water; [MSDSonline]
Used to make azo dyes and pigments, vat dyes, photographic antifogging agents, coccidiostats, and ortho-phenylenediamine; [HSDB] Used to make benzotriazoles, cutting fluids, and pharmaceuticals; [SIDSUNEP]
Highly toxic; May be absorbed through skin; May induce methemoglobinemia and cyanosis; Prolonged exposure may cause damage to the liver; [Merck Index] Can induce methemoglobinemia; [ICSC] A skin, eye, nose, and throat irritant; [HSDB] An irritant; [MSDSonline]
Biomedical References

Exposure Assessment

Vapor Pressure
0.00277 mm Hg
Lethal Concentration
LC50 (rat) > 2,529 mg/m3/4h
Explanatory Notes
Flash point = 168 deg C; [Hawley]

Adverse Effects

MetHgb is secondary toxic effect
Hepatoxic (a) from occupational exposure (secondary effect) or (b) in animal studies or in humans after ingestion

Diseases, Processes, and Activities Linked to This Agent

Other Information
No other related information on this agent was found.