6/17/2023 0 Comments Sodium benzoate mmass![]() The reaction can also be carried out with sodium carbonate, although its yield may be less than desired. These compounds undergo a neutralization reaction, producing sodium benzoate and water. Obtained benzoic acid by any of these three methods, it is then dissolved in sodium hydroxide. And finally, the benzotrichloride is hydrolyzed by the action of mineral acids, originating benzoic acid. In this reaction the methyl group "just" oxidizes to the carboxyl group: Toluene is oxidized to benzoic acid by adding nitric acid. This compound can undergo decarboxylation to give rise to benzoic acid, since in its structure with two aromatic rings it appears to have two -COO groups condensed together. Naphthalene is oxidized with vanadium pentoxide to form phthalic anhydride. The benzoic acid involved in the synthesis of sodium benzoate is produced mainly by three methods: Surface tensionħ2.9 mN / cm at 20 ° C in a solution of 1 g / l of water. This is because it hydrolyzes to release OH ions –. When heated to decomposition at 120✬ (248✯), it emits acrid smoke of sodium oxide and other components that can be toxic and carcinogenic.Īs it decomposes at 120 ✬, it prevents its boiling and melting points from being accurately determined, the reported values of these parameters being theoretical estimates. Incompatible with strong oxidizing agents, alkalis and mineral acids. It can be sensitive to humidity, hydrolyzing to benzoic acid. It is stable under recommended storage conditions. In methanol it is more soluble than in ethanol: 8.22 g / 100 g at 15 ✬. Poorly soluble in ethanol: 8.22 g / 100 g at 25 ✬. Odorīittersweet, astringent and unpleasant. This is due to the presence of organic acids that give food an adequate pH for the action of sodium benzoate which, as such, ends up being protonated to benzoic acid. This compound is used with a food preservative, its action being more efficient at an acid pH. Sodium benzoate does not accumulate in the body, as it rapidly combines with the amino acid glycine to form hippuric acid, which is freely excreted in the urine. It is also a metabolite of algae and plants. This salt can be found naturally in various fruits and other parts of vegetables, such as: blueberries, plums, raisins, cinnamon, cloves, and apples. The result is a white solid (lower image) that is soluble in water and decomposes on heating at 120✬. It is produced or generated by the neutralization reaction between benzoic acid and sodium hydroxide. ![]() The sodium benzoate is an organic salt whose chemical formula is C 6H 5COONa. Video: Sodium Benzoate: The Food Preservative to Pass Up! (2020) Content
0 Comments
Leave a Reply. |