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3-Nitrobenzoic acid is an organic compound with the formula C 6 H 4 (NO 2)CO 2 H. It is an aromatic compound and under standard conditions, it is an off-white solid. The two substituents are in a meta position with respect to each other, giving the alternative name of m-nitrobenzoic acid.
The three isomers of nitrobenzoic acid are: 2-Nitrobenzoic acid is prepared by oxidation of 2-nitrotoluene.; 3-Nitrobenzoic acid is a precursor to 3-aminobenzoic acid, which in turn is used to prepare some dyes.
Methyl benzoate is an organic compound. It is an ester with the chemical formula C 6 H 5 COOCH 3, sometimes abbreviated as PhCO 2 Me, where Ph and Me are phenyl and methyl, respectively. Its structure is C 6 H 5 −C(=O)−O−CH 3. It is a colorless liquid that is poorly soluble in water, but miscible with organic solvents.
It contains a nitro group meta-substituted to the aldehyde. 3-Nitrobenzaldehyde is the primary product obtained via the mono-nitration of benzaldehyde with nitric acid. [3] C 6 H 5 CHO + HNO 3 → O 2 NC 6 H 4 CHO + H 2 O. Product distribution is about 19% for the ortho-, 72% for the meta- and 9% for the para isomers.
meta-Methylbenzoic acid. ... Melting point: 111 to 113 °C (232 to 235 °F; 384 to 386 K) ... oxidizing one of the methyl groups to COOH. Uses
The dinitrobenzenes are all crystalline solids. The boiling points of the three isomers are relatively close; however, the melting points significantly differ. 1,4-Dinitrobenzene, which has the highest symmetry, has the highest melting point.
Melting point: 147.5 °C (297.5 °F; 420.6 K) Acidity (pK a) 2.16 Magnetic susceptibility (χ)-76.11·10 −6 cm 3 /mol Related compounds Related compounds. Benzoic acid
4-Nitrobenzoic acid is prepared by oxidation of 4-nitrotoluene using oxygen or dichromate as oxidants. [7]Alternatively, it has been prepared by nitration of polystyrene followed by oxidation of the alkyl substituent.