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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. The avoidance of organic ...
The mechanism starts with the absorption of benzoic acid into the cell. If the intracellular pH falls to 5 or lower, the anaerobic fermentation of glucose through phosphofructokinase decreases sharply, [23] which inhibits the growth and survival of microorganisms that cause food spoilage.
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.
Benzyl alcohol is subsequently metabolized to benzoic acid. 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 .
Halazone (4-(dichlorosulfamoyl)benzoic acid) is a chemical compound whose formula can be written as either C 7 H 5 Cl 2 NO 4 S or (HOOC)(C 6 H 4)(SO 2)(NCl 2). It has been widely used to disinfect drinking water. Other names for this compound include p-sulfondichloramidobenzoic acid, 4-[(dichloroamino)sulfonyl]benzoic acid, and Pantocide.
The Arrhenius equation was used in a study to calculate activation energies for the chlorination of four parent parabens (methyl-, ethyl-, propyl-, and butylparaben) and was found to range from 36–47 kJ/mol. [21] In another study, tap water at 20 °C (68 °F) containing 50–200 μM free chlorine was spiked with 0.5 μM propylparaben and the ...
Benzoyl peroxide is a chemical compound (specifically, an organic peroxide) with structural formula (C 6 H 5 −C(=O)O−) 2, often abbreviated as (BzO) 2.In terms of its structure, the molecule can be described as two benzoyl (C 6 H 5 −C(=O)−, Bz) groups connected by a peroxide (−O−O−).
Mechanism of action. When ortho substitution occurs in benzoic acid, steric hindrance causes the carboxyl group to twist out of the plane of the benzene ring. The ...