Dehydroacetic acid

Dehydroacetic acid
Dehydroacetic acid[1]
Preferred IUPAC name
3-Acetyl-2-hydroxy-6-methyl-4H-pyran-4-one[citation needed]
Other names
Biocide 470F[citation needed]
Methylacetopyronone[citation needed]
Identifiers
Abbreviations DHAA
CAS number 520-45-6 YesY
PubChem 10623
ChemSpider 10177 N
UNII 2KAG279R6R YesY
EC number 208-293-9
MeSH dehydroacetic+acid
Jmol-3D images Image 1
Properties
Molecular formula C8H8O4
Molar mass 168.15 g mol−1
Exact mass 168.042258744 g mol-1
Appearance White crystals
Melting point

109 °C, 382 K, 228 °F
Boiling point

270 °C, 543 K, 518 °F
Hazards
EU Index 607-163-00-2
EU classification Harmful Xn
R-phrases R22
S-phrases (S2)
 N acid (verify) (what is: YesY/N?)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Dehydroacetic acid is a pyrone derivative used mostly as a fungicide and bactericide. It is used to reduce pickle bloating as a preservative for squash and strawberries.[2]
Also used in antienzyme toothpastes.

The sodium salt, sodium dehydroacetate, is often used in place of dehydroacetic acid because of its greater solubility in water.

Industrially, it is also used as a plasticizer in a variety of synthetic resins.[1]

References

  1. ^ a b Merck Index, 11th Edition, 2855
  2. ^ Handbook of Biocide and Preservative Use, Harold William Rossmoore, p. 341 ISBN 0751402125
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