Trisha Shetty (Editor)

Dehydroacetic acid

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Abbreviations
  
DHAA

Appearance
  
White crystals

Boiling point
  
269.9 °C

Dehydroacetic acid httpsuploadwikimediaorgwikipediacommonsthu

Dehydroacetic acid is an organic compound which has several industrial applications. The compound is classified as a pyrone derivative.

Contents

Preparation

It is prepared by the base-catalysed dimerization of diketene. Useful catalysts include tertiary amines, imidazole, DABCO, and pyridine.

Uses

Industrially, dehydroacetic acid has several uses which include the following:

  • a fungicide and bactericide. The sodium salt, sodium dehydroacetate, is often used in place of dehydroacetic acid because of its greater solubility in water.
  • a food preservative to prevent pickle bloating in squash and strawberries. When used as a food additive, dehydroacetic acid is referred to using the International Numbering System for Food Additives or E number 265.
  • a plasticizer in synthetic resins.
  • an antienzyme in toothpastes.
  • a precursor for dimethyl-4-pyridones. The compounds are synthesized when dehydroacetic acid is exposed to aqueous solutions containing primary amines.

    • References

    Dehydroacetic acid Wikipedia
    (Text) CC BY-SA


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