| Dehydroacetic acid[1] | |
|---|---|
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3-Acetyl-2-hydroxy-6-methyl-4H-pyran-4-one |
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Other names
Biocide 470F |
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| Identifiers | |
| Abbreviations | DHAA |
| CAS number | 520-45-6 |
| PubChem | 10623 |
| ChemSpider | 10177 |
| UNII | 2KAG279R6R |
| EC number | 208-293-9 |
| MeSH | dehydroacetic+acid |
| Jmol-3D images | Image 1 |
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| 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 | Xn |
| R-phrases | R22 |
| S-phrases | (S2) |
| (verify) (what is: /?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) |
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| 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]