Applications of Benzoic Acid
The production of phenol involves the use of benzoic acid.
It is used in ointments for the prevention of fungal skin infections.
It serves as a preservative in the food industry.
Benzoic acid is one of the ingredients in many cosmetic products, such as lipsticks.
It is found in toothpaste, mouthwashes, and facial cleansing creams.
It is used in the production of dyes and resins.
It is also used in insect repellent formulations.
Benzoic acid and its salts are widely used as preservatives in the food industry.
Structure of Benzoic Acid
This molecule consists of a benzene ring with a carboxyl functional group attached to it.
It is composed of 7 carbon atoms, 6 hydrogen atoms, and 2 oxygen atoms.
Properties of Benzoic Acid
The physical and chemical properties of C₆H₅COOH are discussed below:
Chemical formula: C₇H₆O₂ or C₆H₅COOH
Molecular weight / molar mass: 122.12 g/mol
Density: 1.27 g/cm³ at 15°C
Boiling point: 523 K
Melting point: 395 K
Physical Properties of Benzoic Acid
In its solid state, benzoic acid appears as a colorless crystal.
It has a monoclinic crystal structure.
The presence of an aromatic ring gives it a mildly pleasant odor.
At 130°C, its density decreases to 1.075 g/cm³.
Chemical Properties of Benzoic Acid
It is soluble in water, with solubility at 25°C and 100°C being 3.44 g/L and 56.31 g/L, respectively.
It is also soluble in benzene, carbon tetrachloride, acetone, and alcohols.
Its acid dissociation constant (pKa) is approximately 4.2.
It can undergo reactions either in the carboxyl group or in the aromatic ring.
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