Formula C7H5NO4 Density 1.49 g/cm³ | Molar mass 167.12 g/mol Appearance cream-colored solid | |
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3-Nitrobenzoic acid is an organic compound with the formula C6H4(NO2)CO2H. It is an off-white solid. It is a precursor to 3-aminobenzoic acid, which is used to prepare some dyes.
Contents
Preparation
It is prepared by nitration of benzoic acid. 2-Nitrobenzoic acid is a major side product. A less efficient but cleaner route involves nitration of methyl benzoate, followed by hydrolysis.
Properties
With a pKa of 3.47, 3-nitrobenzoic acid is about ten times more acidic than benzoic acid.
Safety
The compound is likely of modest toxicity, with LD50 (i.v., mouse) of 640 mg/kg.
References
3-Nitrobenzoic acid Wikipedia(Text) CC BY-SA