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2-nitrobenzoic acid

CAS Number
552-16-9
EC Number
209-004-9
Chemical Formula
C7H5NO4
Molecular Weight
167.12 g/mol

Description

2-Nitrobenzoic acid (CAS 552-16-9 ), also known as o-nitrobenzoic acid, is an aromatic nitro compound used as a key building block in the synthesis of pharmaceutical intermediates and specialty chemicals. Its reactive carboxyl and nitro groups make it a practical starting material for multi-step organic synthesis across several industrial sectors. In pharmaceutical manufacturing, it serves as a precursor. It is used in the production of anthranilic acid derivatives, dyes, and active pharmaceutical ingredients requiring ortho-substituted benzoic acid frameworks. Pigment and colorant producers use it as an intermediate. This chemical is essential in synthesizing azo dyes and other chromophoric structures for textile and industrial coating applications. In personal care formulations, it contributes to preservation systems. It is also utilized for pH buffering where aromatic acid chemistry is required. Specialty chemical manufacturers apply it in surface modification agents and wetting formulations where controlled acidity is needed. The aromatic character of this compound influences substrate interaction significantly. 2-Nitrobenzoic acid is supplied as an off-white to pale yellow crystalline powder for various industrial uses. Technical grade is the standard commercial offering, with pharmaceutical-grade material available for regulated synthesis applications. Bulk quantities are typically offered in fiber drums or multi-layer bags. Smaller packaging is available for laboratory and pilot-scale procurement. This ensures flexibility for both large-scale manufacturing and specialized research and development projects within the industry. Contact us for supply of 2-nitrobenzoic acid Request Quote

Other Names (Synonyms)

o-nitrobenzoic acid | o-Carboxynitrobenzene | Benzoic acid, 2-nitro- | ortho-nitrobenzoic acid | AI3-08821 | Benzoic acid, o-nitro- | NITROBENZOIC ACID

Key Technical Features

  • High Purity Grade standard
  • Consistent Batch Quality
  • Full Regulatory & REACH Support
  • Global Logistics Network enabled

Physical Properties

Melting Point147.5 °C
Boiling Point295.67°C (rough estimate)
Density1,58 g/cm 3
Appearanceoff-white powder
ColorOff-white
FormFine Powder
Water Solubility6.8 g/L
Refractive Index1.6280 (estimate)

Safety & Handling

Warning
GHS07· Irritant

Hazard Statements

H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary Statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.
P264Wash … thoroughly after handling.
P271Use only outdoors or in a well-ventilated area.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P319Get medical advice/attention if you feel unwell.
P321Specific treatment (see … on this label).
P405Store locked up.
P501Dispose of contents/container in accordance with local regulations.
P265Wash … thoroughly after handling.
P352IF ON SKIN: Wash with plenty of water.
P340IF INHALED: Remove person to fresh air and keep comfortable for breathing.
P317Get emergency medical help.
P317If eye irritation persists: Get medical advice/attention. Get emergency medical help.
P364Take off contaminated clothing and wash it before reuse.
P233Store in a well-ventilated place. Keep container tightly closed.
P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Trade & Regulatory

HS Code29163900
Storage Class11 - Combustible Solids
WGK (Germany)3