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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.
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.
By doing so, many substances that are liquid or have a low melting point are converted to easily crystallized derivates with sharp melting points. For instance, alcohols can be identified by the melting point of their esters with 3,5-dinitrobenzoic acid. This method is also applicable to a large number of amines.
Boiling point (°C) K b (°C⋅kg/mol) Freezing point (°C) K f (°C⋅kg/mol) Data source; Aniline: 184.3 3.69 –5.96 –5.87 K b & K f [1] Lauric acid: 298.9 44 –3.9
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.
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
3-Nitrobenzaldehyde is an organic compound with the formula O 2 NC 6 H 4 CHO.It is one of three isomers of nitrobenzaldehyde.It contains a nitro group meta-substituted to the aldehyde.