Benzoic acid

Benzoic acid (Acidum benzoicum) - antiseptic; colorless crystals, poorly soluble in water and are well in alcohol, ether, benzene. Used externally as an antifungal and antimicrobial agent in the concentration of 2-6%. Is used as an antimicrobial preservative in the manufacture of medicinal forms. The ingestion increases the secretion of mucous membranes of the respiratory tract. As an expectorant for bronchitis and other respiratory diseases applied in the form of sodium salt - sodium benzoate. Cm. also Antiseptic.

Benzoic acid (Aeidum benzoicum; With6N5COOH) - yielding aromatic acid. Clear needle crystals with a sweet, tart taste, temperature plasma 121,7°, temperature instrumentation. 249,2 degrees. Sublimates at 100 degrees; volatile with water vapor, it is difficult soluble in cold (1 : 400) and well in cold water (1 : 25). Well soluble in alcohol, chloroform, ether, benzene and other Occurs in resins, balsams, essential oils, living organisms.
Benzoic acid is used in the synthesis of dyes; in the production of a number of pharmaceutical preparations, such as Atofina, benzonitrile, benzoato lithium, magnesium, potassium, ammonium, etc. B. K. and sodium benzoate is also used in industry for preservation of food. Methyl and ethyl esters B. K. have a strong smell; they are a part of many essential oils (tuberose, carnation and others). Benzyl and cinnamon esters are used as tabs smells and solvents some of odoriferous substances.
B. K. irritating to skin and inhalation of fumes heated B. K. - convulsive cough, runny nose, nausea and vomiting.
Benzoic acid as a drug. B. K. applied as antiseptic funds in the form of ointments (1-10%), pastes. When administered B. K. increases the secretion of mucous membranes of the respiratory tract. Sodium salt B. K. applied as an expectorant (powder and medicines 0.25-0.5 g 3-4 times a day). When lung abscesses, septic bronchitis 15% solution of sodium salt B. K. injected into a vein. Sodium salt B. K. also used as a diagnostic tool to determine the antitoxic function of the liver. Cm. also Antiseptic.