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脫氫乙酸

Dehydroacetic Acid

Dehydroacetic Acid is an organic compound classified as a pyrone derivative with several industrial applications. It appears as an odorless, colorless to white crystalline powder, almost insoluble in water but moderately soluble in most organic solvents. It is synthesized through the base-catalyzed dimerization of diketene, with common organic bases including imidazole, DABCO, and pyridine. This compound's unique chemical properties and wide range of applications make it an indispensable ingredient in various industries.

脫氫乙酸, Dehydroacetic Acid, 化妝品 添加物, 化妝品 成分, 保養品 成分, 保養品 添加物, 防霉劑, 食品防腐劑, 合成樹脂增塑劑, 牙膏抗酶劑,防霉殺菌劑, 食品防腐劑E265, 合成樹脂增塑劑, 牙膏中的抗酶成分

By Vyacheslav Nasretdinov - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=16529791

Effects in Cosmetics

Dehydroacetic Acid offers multiple benefits and applications, including:

Acting as a fungicide and bactericide to maintain product stability and extend shelf life in cosmetics.
Its sodium salt form, sodium dehydroacetate, is often used instead due to its higher solubility in water.

The use in food

Serves as a food preservative to prevent bloating in pickled squash and strawberries.
Referred to by the International Numbering System for Food Additives or E number 265 when used as a food additive.

Source 

Prepared by the base-catalyzed dimerization of diketene, using organic bases such as imidazole, DABCO, and pyridine.
This method of preparation allows for its use in various industrial applications, including as a plasticizer in synthetic resins, an antienzyme in toothpaste, and a precursor for synthesizing dimethyl-4-pyridones.

Globally Harmonized System of Classification and Labelling of Chemicals 

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