Method for preparing high-purity food standard product diethyl sebacate

Abstract

The invention relates to a method for preparing a high-purity food standard product diethyl sebacate. The method comprises the following steps: (1) selecting a raw material diethyl sebacate of which the purity content is not smaller than 98%; (2) adding the raw material diethyl sebacate into a saturated sodium chloride solution, performing stirring for 20-30 minutes, and allowing the stirred material to stand so as to separate a water phase; (3) adding a saturated potassium carbonate solution into the organic phase, performing heating to 40-50 DEG C, performing stirring for 25-30 minutes, performing heating to 50-60 DEG C, performing stirring for 25-30 minutes, and allowing the stirred material to stand so as to separate a water phase; and (4) performing water washing and drying, and performing reduced pressure distillation, thereby obtaining a standard product of which the content is 99.8% (GC), wherein the content of 99% (GC) is analytically pure. The method for preparing the high-purity food standard product diethyl sebacate, which is provided by the invention, is simple in process and good in operability, industrial production of companies can be met, self-operation of a laboratory can be met, the profit can be maximized, and the standard product does not need to be purchased with high price from the market.

Description

technical field [0001] The invention belongs to the technical field of organic chemical industry, relates to the further purification of esters, and specifically provides a preparation method of diethyl sebacate, a high-purity food standard product. Background technique [0002] Diethyl sebacate, colorless to light yellow liquid, with the aroma of wine, fruit and melon GB2760-2007 stipulates that it is a food flavor temporarily allowed, mainly used for the preparation of berry flavors, grape, pear and other flavors and fruit flavors Fragrance solvent. [0003] Diethyl sebacate is also commonly used anti-shrinkage agent, also known as plasticizer. The plasticizer scandal in Taiwan has gradually become an international food safety incident. When people mention plasticizers, they often think of them as phthalates. They don't know that aliphatic dibasic acid esters are also plasticizers that endanger people's health. It is not only brought to the human body by packaged food, b...

AI Technical Summary

Problems solved by technology

Not only is it brought to the human body by packaged food, but it is also directly added to the food as a flavor, which is a greater and more direct harm.