4-nitrobenzoic acid

4-Nitrobenzoic acid (CAS 62-23-7), also known as p-Nitrodracylic acid, is an aromatic nitro compound used primarily as a chemical intermediate in pharmaceutical synthesis and dye manufacturing.

Where is 4-nitrobenzoic acid used?

• Pharmaceuticals: building block for active pharmaceutical ingredients, including local anesthetics, antimicrobials and cardiovascular compounds
• Dyes and pigments: introduces nitro functionality into azo colorant structures, influencing hue and lightfastness in textile and ink applications
• Organic synthesis: pH buffer and mild preservative where controlled acidity and microbial inhibition are required
• Personal care formulators have explored it in preservation systems targeting specific microbial strains at low concentrations.

Commercial specifications

• Technical and pharmaceutical grades; purity typically 98% to 99%+, per USP or BP standards
• Packaging from kilogram-scale laboratory quantities to bulk industrial volumes