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Molecular formula : C9H10O3
MW : 166.18
CAS No. :121-32-4
nature : white to pale yellow needle-like crystal. 77-78 ° C melting point, boiling point, 149-150 ° C (1.73kPa). Dissolved in alcohol, ether, chloroform, sodium hydroxide solution, the goods 1g about 2ml95% soluble in ethanol, water-soluble.
preparation methods : o ETHOXYPHENOL Preparation for raw materials. This method with vanillin similar to the process. Also help with the neighbors ETHOXYPHENOL acid reaction, and then oxidized copper and caustic soda solution heating oxidation of ethyl vanillin. By Safrol with not only the production of vanillin, but also produce ethyl vanillin. Will Safrol - (4 - allyl-1 ,2-dioxane A shoring p) and potassium hydroxide solution of alcohol within the autoclave heating, the destruction of their oxygen-Central. Then sodium ethyl and the resultant 50% potassium hydroxide solution at 150-155 ° C heat 2-3h for etherification. After the ether mixture of soluble phenolic 50% ethanol, then a small amount of sulfuric acid reflux heat it generated strong hydrolysis and Vanitrope Isoeugenol category. Former into Flake crystallization, filtration, and then 50% ethanol recrystallization, that in pure. Filtrate from the isolated category Isoeugenol dissolved in 10% sodium hydroxide solution, by adding sodium return nitrobenzene between 3h heating, cooling after acidification with dilute sulfuric acid, ethyl vanillin production. Acidification with benzene extraction of the oil and bar, and then re-Asia 35% solution of sodium sulfur extraction, acidification after recrystallization derived products.
purposes : the goods with the aroma of vanillin, but more elegant than vanillin, and vanillin flavor intensity than 3-4 times higher, mostly used for snack foods, beverages and other food spices, but also for perfume, cosmetics, tobacco. Rat oral LD50 of >2000mg/kg.
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