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Benzoic acid is cheap and readily available, so the laboratory synthesis of benzoic acid is mainly practiced for its pedagogical value. It is a common undergraduate preparation. Benzoic acid can be purified by recrystallization from water because of its high solubility in hot water and poor solubility in cold water.
It is also used as a preservative in medicines and cosmetics. [6] [7] Under these conditions it is converted into benzoic acid (E210), which is bacteriostatic and fungistatic. Benzoic acid is generally not used directly due to its poor water solubility. Concentration as a food preservative is limited by the FDA in the U.S. to 0.1% by weight. [8]
Across a sample of 23 nicotine salts available for public purchase, the three most common acids used in the formation of nicotine salts were lactic acid, benzoic acid and levulinic acid. [8] Benzoic acid is the most used acid to create a nicotine salt. [9] Nicotine pyruvate is another form of nicotine salt. [10] A chemical reaction with a ...
Benzalkonium chloride is a frequently used preservative in eye drops. Typical concentrations range from 0.004% to 0.01%. [16] Stronger concentrations can be caustic [17] and cause irreversible damage to the corneal endothelium. [18] Avoiding the use of benzalkonium chloride solutions while contact lenses are in place is discussed in the literature.
Range of mouthwashes by Listerine. Mouthwash, mouth rinse, oral rinse, or mouth bath [1] is a liquid which is held in the mouth passively or swirled around the mouth by contraction of the perioral muscles and/or movement of the head, and may be gargled, where the head is tilted back and the liquid bubbled at the back of the mouth.
The conjugates of benzoic acid (hippuric acid and the glucuronide of benzoic acid) are rapidly eliminated in urine. [1] When given in large doses to laboratory animals, benzyl benzoate can cause hyperexcitation, loss of coordination, ataxia, convulsions, and respiratory paralysis. [10] Benzyl benzoate can be a skin irritant when used as a ...
Potassium benzoate (E212), the potassium salt of benzoic acid, is a food preservative that inhibits the growth of mold, yeast and some bacteria.It works best in low-pH products, below 4.5, where it exists as benzoic acid.
alcohols with or without antiseptic additives, used mainly for skin antisepsis, weak organic acids such as sorbic acid, benzoic acid, lactic acid and salicylic acid; some phenolic compounds, such as hexachlorophene, triclosan and Dibromol, and; cationic surfactants, such as 0.05–0.5% benzalkonium, 0.5–4% chlorhexidine, 0.1–2% octenidine ...