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Dye intermediates

2-Nitroaniline

Also known as o-Nitroaniline, 2-Nitrobenzenamine, Benzenamine, 2-nitro-

CAS 88-74-4Formula C6H6N2O2Molar mass 138.13 g/molEC 201-855-4
GHS signal word: Danger. Pictograms: Acute toxicity (severe), Serious health hazard 31 suppliers listed
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2-Nitroaniline chemical structure, C6H6N2O2, CAS 88-74-4
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Yellow-orange crystals from boiling water
Melting point
71 °C
Boiling point
284 °C
Density
1.44 g/cm³
Flash point
168 °C
HS code
292142
Category
Dye intermediates
UN number
UN 1661
Illustrative photo, yellow pigment powder in an open fibre drum in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is 2-Nitroaniline?

Plain description, key identifiers and synonyms

O-nitroaniline is an orange solid with a musty odor. Sinks and mixes slowly with water. (USCG, 1999)

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
2-nitroaniline
CAS number
88-74-4 CAS number cross-checkedOther or deprecated CAS: 38500-40-2
EC number
201-855-4
Molecular formula
C6H6N2O2
UNII
2519U0541L
MDL number
MFCD00007687
InChIKey
DPJCXCZTLWNFOH-UHFFFAOYSA-N
InChI
InChI=1S/C6H6N2O2/c7-5-3-1-2-4-6(5)8(9)10/h1-4H,7H2
SMILES (canonical and isomeric)
C1=CC=C(C(=C1)N)[N+](=O)[O-]

Synonyms

  • o-Nitroaniline
  • 2-Nitrobenzenamine
  • Benzenamine, 2-nitro-
  • o-Nitraniline
  • 1-Amino-2-nitrobenzene
  • Fast Orange GR Base
  • Fast Orange O Base
  • Devol Orange B
  • Fast Orange Base GR
  • Orange GRS Salt
  • o-Aminonitrobenzene
  • 2-Aminonitrobenzene
  • Aniline, o-nitro-
  • Orthonitroaniline
  • Fast Orange O Salt
  • Devol Orange Salt B
  • Fast Orange Base JR
  • Fast Orange GR Salt
  • Fast Orange Salt GR
  • Fast Orange Salt JR
  • Orange Base Ciba II
  • Orange Base Irga II
  • Orange Salt Ciba II
  • Orange Salt Irga II
  • Diazo Fast Orange GR
Show all 39 synonyms
  • Azofix Orange GR Salt
  • Azoene Fast Orange GR Salt
  • Azogene Fast Orange GR
  • Hindasol Orange GR Salt
  • Azoic Diazo Component 6
  • ortho-nitroaniline
  • Azoene Fast Orange GR Base
  • Natasol Fast Orange GR Salt
  • Hiltonil Fast Orange GR Base
  • Hiltosal Fast Orange GR Salt
  • Brentamine Fast Orange GR Base
  • Brentamine Fast Orange GR Salt
  • C.I. Azoic Diazo Component 6
  • CI Azoic Diazo Component 6

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

Appearance
Yellow-orange crystals from boiling waterexp.
Odour
Mustyexp.
Melting point
71 °Cexp.
Boiling point
284 °Cexp.
Density
1.44 g/cm³exp.
Flash point
168 °Cexp.
Autoignition temperature
521 °Cexp.
Solubility
Slightly sol in cold water, sol in hot waterexp.
Vapour pressure
VP: 1 mm Hg at 104.0 °Cexp.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
138.13 g/molcalc.
Exact mass
138.0429 Dacalc.
LogP (octanol/water)
1.18calc.
Topological polar surface area
69.16 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
3calc.
Rotatable bonds
1calc.
Heavy atoms
10calc.
Rings
1calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, c1ccccc1

c1ccccc1

1 ring, 6 atoms, the Benzene ring system.

485,677 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS06: Acute toxicity (severe)
Acute toxicity (severe)
GHS08: Serious health hazard
Serious health hazard

Hazard statements

  • H301Toxic if swallowed.
  • H311Toxic in contact with skin.
  • H331Toxic if inhaled.
  • H373May cause damage to organs through prolonged or repeated exposure.
  • H412Harmful to aquatic life with long lasting effects.
Precautionary statements (19)
  • P260Do not breathe dust, fume, gas, mist, vapours or spray.
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P262Do not get in eyes, on skin, or on clothing.
  • P264Wash skin thoroughly after handling.
  • P270Do not eat, drink or smoke when using this product.
  • P271Use only outdoors or in a well-ventilated area.
  • P273Avoid release to the environment.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P316If swallowed: Get emergency medical help immediately.
  • P302 + P352If on skin: Wash with plenty of water.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P316Get emergency medical help immediately.
  • P319Get medical help if you feel unwell.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P361 + P364Take off immediately all contaminated clothing. And wash it before reuse.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.
UN number
UN 1661
Transport hazard class
6.1
Packing group
II

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

2-Nitroaniline suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 31 suppliers
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Where suppliers are based

31 suppliers in 7 countries

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2-Nitroaniline price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Chemical intermediate for ci pigment yellow 5, orange 2, yellow 7, vat red 15, vat orange 7, ci pigment orange 43, vat red 14, disperse yellow 10.

Dye intermediate, synthesis of photographic antifogging agent, ortho-phenylenediamine, coccidiostats.

2-Nitroaniline is used as a diazo component (Fast Orange GR Base) in azo dyes and pigments (e.g., C.I. Disperse Yellow 10 and C.I. Pigment Yellow 5) and as an intermediate for vat dyes (e.g., C.I. Vat Red 14).

Industrial uses: UV stabilizer.

Consumer uses: UV stabilizer.

How it is made

Reaction of 1-chloro-2-nitrobenzene with ammonia.

From o-Dinitrobenzene, ... From o-Nitroaniline-p-Sulfonic acid, ... From PSI-o-Dinitrobenzene.

From aniline by nitration after acetylation, with subsequent removal of the acetyl group by hydrolysis, from o-dinitrosobenzene.

Regulatory status

Inventories, regulations and trade controls that list this substance

Europe

  • EU harmonised classification (CLP Annex VI)
    Index no: 612-012-00-9[1]

United States

  • TSCA inventory (USA)
    Status: Active in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code 2-Nitroaniline is traded under.

HS 2921.42Indicative HS code

Aniline derivatives and their salts

World exports in 2024
$495M
−2.5% vs 2023, imports $440M
2019 to 2024
Top exporters
  1. China69.8%
  2. India * partner reported19.6%
  3. Japan3.3%
Top importers
  1. Pakistan17.0%
  2. United Arab Emirates * partner reported12.7%
  3. Brazil10.9%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for 2-Nitroaniline is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about 2-Nitroaniline, based on the data on this page

What is 2-Nitroaniline?

O-nitroaniline is an orange solid with a musty odor. Sinks and mixes slowly with water. (USCG, 1999)

What is the CAS number of 2-Nitroaniline?

The CAS registry number of 2-Nitroaniline is 88-74-4. Other or deprecated CAS numbers: 38500-40-2.

What is the molecular formula and weight of 2-Nitroaniline?

The molecular formula of 2-Nitroaniline is C6H6N2O2 and its molar mass is 138.13 g/mol.

What is 2-Nitroaniline used for?

Chemical intermediate for ci pigment yellow 5, orange 2, yellow 7, vat red 15, vat orange 7, ci pigment orange 43, vat red 14, disperse yellow 10. Dye intermediate, synthesis of photographic antifogging agent, ortho-phenylenediamine, coccidiostats.

Is 2-Nitroaniline hazardous?

2-Nitroaniline carries the GHS signal word "Danger". Main hazards: toxic if swallowed, toxic in contact with skin, toxic if inhaled. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of 2-Nitroaniline?

2-Nitroaniline is usually classified under HS code 292142 (Aniline derivatives and their salts). This is indicative, confirm it with your customs broker before shipping.

Where can I buy 2-Nitroaniline?

CompoundList lists 31 suppliers of 2-Nitroaniline in China, India, United States, Czech Republic and 3 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy 2-Nitroaniline in India?

3 suppliers in India list 2-Nitroaniline on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of 2-Nitroaniline?

Suppliers quote 2-Nitroaniline on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle 2-Nitroaniline

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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