Dehydroacetic acid

Dehydroacetic acid^[1]
Names
	IUPAC name 3-acetyl-2-hydroxy-6-methyl-4H-pyran-4-one
	Other names Methylacetopyronone; Biocide 470F
Identifiers
CAS Number	520-45-6 ;
3D model (JSmol)	Interactive image;
ChemSpider	109553 ;
ECHA InfoCard	100.007.541
E number	E265 (preservatives)
PubChem CID	10623;
UNII	2KAG279R6R ;
CompTox Dashboard (EPA)	DTXSID801015814 DTXSID6020014, DTXSID801015814 ;
	SMILES O=C(C)C=1C(=O)C=C(C)OC=1O;
Properties
Chemical formula	C8H8O4
Molar mass	168.14672
Appearance	White crystalline powder
Melting point	109-111 °C (sublimes)
Boiling point	269.9 °C (517.8 °F; 543.0 K)
Solubility in water	<0.1%
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) 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

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

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[Merck-1] Merck Index, 11th Edition, 2855

[2] Handbook of Biocide and Preservative Use, Harold William Rossmoore, p. 341 ISBN 0751402125

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