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Carboxylic acids and anhydrides

2-Nitrobenzoic acid

Also known as o-Nitrobenzoic acid, Benzoic acid, 2-nitro-, ortho-nitrobenzoic acid

CAS 552-16-9Formula C7H5NO4Molar mass 167.12 g/molEC 209-004-9
GHS signal word: Warning. Pictograms: Harmful or irritant 24 suppliers listed
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2-Nitrobenzoic acid chemical structure, C7H5NO4, CAS 552-16-9
2D chemical structure

Key facts

What buyers check first

All properties
Physical form
Crystals
Melting point
147.2 to 147.8
Density
1.575 at 68 °F - Denser than water, will sink
Solubility
Less than 1 mg/mL at 73 °F
HS code
291639
Category
Carboxylic acids and anhydrides
Illustrative photo, 25 kg white woven sacks of powder on a pallet in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is 2-Nitrobenzoic acid?

Plain description, key identifiers and synonyms

2-nitrobenzoic acid is a nitrobenzoic acid carrying the nitro substituent at position 2. It is functionally related to a benzoic acid. It is a conjugate acid of a 2-nitrobenzoate.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
2-nitrobenzoic acid
CAS number
552-16-9 CAS number cross-checkedOther or deprecated CAS: 104810-18-6
EC number
209-004-9
Molecular formula
C7H5NO4
UNII
S6S4653K7Z
MDL number
MFCD00007137
InChIKey
SLAMLWHELXOEJZ-UHFFFAOYSA-N
InChI
InChI=1S/C7H5NO4/c9-7(10)5-3-1-2-4-6(5)8(11)12/h1-4H,(H,9,10)
SMILES (canonical and isomeric)
C1=CC=C(C(=C1)C(=O)O)[N+](=O)[O-]

Synonyms

  • o-Nitrobenzoic acid
  • Benzoic acid, 2-nitro-
  • ortho-nitrobenzoic acid
  • Nitrobenzoic acid, 2-
  • oNitrobenzoic acid
  • oCarboxynitrobenzene
  • Nitrobenzoicacid, o
  • orthonitrobenzoic acid
  • Benzoic acid, onitro
  • Benzoic acid, 2nitro
  • Benzoic acid,2-nitro mfc7 h5 n1 o4
  • 2-nitrobenzoicacid
  • Benzoic acid, o-nitro-
  • o-Carboxynitrobenzene
  • 2-nitro-benzoic acid
  • 2-nitro benzoic acid
  • nitrobenzoic acid
  • nitro benzoic acid
  • 6-nitro-benzoic acid
  • 2-Nitrobenzoic acid, 95%
  • 2-Nitrobenzoic acid, 95%,
  • 2-Nitrobenzoic acid - Technical
  • 2-Nitrobenzoic acid, purum, >=97.0% (HPLC)
  • 2-Nitrobenzoic acid, technical, >=85% (HPLC)
  • 2-Nitrobenzoic acid, Vetec(TM) reagent grade, 94%
Show all 26 synonyms
  • 2-Nitrobenzoic acid, 95%, Contains 3- and 4-isomers

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

Physical form
Crystalsexp.
Melting point
147.2 to 147.8exp.
Density
1.575 at 68 °F - Denser than water, will sinkexp.
Solubility
Less than 1 mg/mL at 73 °Fexp.

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
167.12 g/molcalc.
Exact mass
167.0219 Dacalc.
LogP (octanol/water)
1.29calc.
Topological polar surface area
80.44 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
3calc.
Rotatable bonds
2calc.
Heavy atoms
12calc.
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
Warning
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H315Causes skin irritation.
  • H319Causes serious eye irritation.
  • H335May cause respiratory irritation.
Precautionary statements (16)
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P271Use only outdoors or in a well-ventilated area.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P302 + P352If on skin: Wash with plenty of water.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P319Get medical help if you feel unwell.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P332 + P317If skin irritation occurs: Get medical help.
  • P337 + P317If eye irritation persists: Get medical help.
  • P362 + P364Take off 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.

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-Nitrobenzoic acid suppliers

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All 24 suppliers
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Where suppliers are based

24 suppliers in 9 countries

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2-Nitrobenzoic acid 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

Regulatory status

Inventories, regulations and trade controls that list this substance

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-Nitrobenzoic acid is traded under.

HS 2916.39Indicative HS code

Aromatic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and…

World exports in 2024
$706M
−6.8% vs 2023, imports $714M
2019 to 2024
Top exporters
  1. China49.0%
  2. India * partner reported16.2%
  3. Germany13.2%
Top importers
  1. India * partner reported14.5%
  2. United States12.2%
  3. Germany8.6%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

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

What is 2-Nitrobenzoic acid?

2-nitrobenzoic acid is a nitrobenzoic acid carrying the nitro substituent at position 2. It is functionally related to a benzoic acid. It is a conjugate acid of a 2-nitrobenzoate.

What is the CAS number of 2-Nitrobenzoic acid?

The CAS registry number of 2-Nitrobenzoic acid is 552-16-9. Other or deprecated CAS numbers: 104810-18-6.

What is the molecular formula and weight of 2-Nitrobenzoic acid?

The molecular formula of 2-Nitrobenzoic acid is C7H5NO4 and its molar mass is 167.12 g/mol.

What is 2-Nitrobenzoic acid used for?

Known uses and roles of 2-Nitrobenzoic acid include building blocks in research and laboratory and screening compounds in research and laboratory.

Is 2-Nitrobenzoic acid hazardous?

2-Nitrobenzoic acid carries the GHS signal word "Warning". Main hazards: causes skin irritation, causes serious eye irritation, may cause respiratory irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of 2-Nitrobenzoic acid?

2-Nitrobenzoic acid is usually classified under HS code 291639 (Aromatic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy 2-Nitrobenzoic acid?

CompoundList lists 24 suppliers of 2-Nitrobenzoic acid in China, India, United States, Canada and 5 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-Nitrobenzoic acid in India?

4 suppliers in India list 2-Nitrobenzoic acid 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-Nitrobenzoic acid?

Suppliers quote 2-Nitrobenzoic acid 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-Nitrobenzoic acid

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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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