Industry
(1) Production of phenol
Phenol can be produced by liquid phase oxidation of benzoic acid.
(2) Production of terephthalic acid
Terephthalic acid is one of the raw materials of synthetic fiber polyester.
(3) caprolactam production
Caprolactam is the raw material for the production of nylon. Both strands are produced with phenol and cyclohexane, but also with benzoic acid.
(4) chemical intermediates
Benzoic acid can be used as intermediate in the production of benzoate and phthalate, which are important plasticizers.
(5) Plasticizer
Benzoic acid reacts with diethylene glycol, triethylene glycol and dipropylene glycol respectively to produce important and common resin plasticizers diethylene glycol dibenzoate (DEDB), triethylene glycol dibenzoate (TEDB) and dipropylene glycol dibenzoate (DPGDB), which are widely used in the production of resins, coatings and adhesives.
(6) corrosion inhibitor
Sodium benzoate has corrosion inhibition. For example, adding sodium benzoate to the cooling water of automobile cooling system (sodium benzoate concentration is 1.5%) can prevent rust and corrosion of cooling system.
(7) Paint
Benzoic acid can also be used to improve the gloss, viscosity, strength and chemical resistance of various alkyd resin coatings. Benzoate and benzoic acid can stop the chain growth of alkyd resin polymers and promote the crystallinity of products.
(8) dye carrier
Benzoic acid and butyl benzoate are widely used in polyester fiber dyeing. When hydrophobic polyester fiber is dyed, they can be used as dye carrier.
(9) Lubricant
Sodium benzoate can be used as a lubricant in metal processing and drug production.
Food and medicine
(1) Preservatives
Benzoic acid and sodium benzoate are widely used as preservatives because of their bactericidal and bacterial growth inhibiting properties and their low toxicity and odorlessness.
(2) Drugs
Benzoic acid, sodium benzoate, benzyl benzoate can be used in the manufacture of various drugs, respectively, for the treatment of arthritis, abscess, bronchitis, skin diseases, and can also be used as a local anesthetic.
(3) fixed fragrance agent
Benzoic acid can be used as a perfuming agent in fruit drinks. Can be used as a paste fragrance into the aromatherapy fragrance. Can also be used in chocolate, lemon, orange, berries, nuts, preserves and other edible flavor.
