安息香酸ナトリウム

用途清涼飲料、しょう油

説明Sodium benzoate has the chemical formula NaC7H5O2; it is a widely used food preservative, with E number E211. It is the sodium salt of benzoic acid and exists in this form when dissolved in water. It can be produced by reacting sodium hydroxide with benzoic acid.

天然物の起源Benzoic acid occurs naturally in many plants and in animals. The salt is not found to occur naturally.

来歴In 1820, benzoic acid was discovered by German chemist Friedrich Wöhler through the oxidation of toluene. His research laid the groundwork for the eventual production of sodium benzoate. The process typically involves neutralizing benzoic acid with sodium hydroxide, creating sodium benzoate—a stable compound with excellent antibacterial and antifungal properties. Sodium benzoate was commercially introduced in the late 19th century. Its preservative qualities made it particularly valuable as food products began to be mass-produced and distributed. In 1908, sodium benzoate was recognized as a food preservative by the U.S. Food and Drug Administration (FDA). This allowed it to be used in various food products, including soft drinks, pickles, and sauces, to prevent spoilage and extend shelf life.

使用sodium benzoate is a non-toxic, organic salt preservative that is particularly effective against yeast, with some activity against molds and bacteria. It is generally used in concentrations of 0.1 to 0.2 percent.

一般的な説明Sodium benzoate is a sodium salt of benzoic acid, that is freely soluble in water compared to benzoic acid. It is generally used as an antimicrobial preservative in cosmetics, food, and pharmaceuticals.Pharmaceutical secondary standards for application in quality control, provide pharma laboratories and manufacturers with a convenient and cost-effective alternative to the preparation of in-house working standards.

製造方法Produced by the neutralization of benzoic acid with sodium bicarbonate, sodium carbonate or sodium hydroxide.

Sodium benzoate is prepared by adding benzoic acid to a hot concentrated solution of sodium carbonate until effervescence ceases. The solution is then evaporated, cooled and allowed to crystallize or evaporate to dryness, and then granulated.

純化方法Crystallise it from EtOH (12mL/g). [Beilstein 9 IV 27.]

定義本品は、安息香酸(*)のナトリウム塩であり、次の化学式で表される。参照表示名称：安息香酸

定義sodium benzoate: An either colourlesscrystalline or white amorphouspowder, C6H5COONa, soluble inwater and slightly soluble in ethanol.It is made by the reaction of sodiumhydroxide with benzoic acid and isused in the dyestuffs industry and asa food preservative. It was formerlyused as an antiseptic.