dehydroacetic acid
3-acetyl-6-methyl-2,4-pyrandione
Identification
| Name | dehydroacetic acid |
| IUPAC | 3-acetyl-2-hydroxy-6-methylpyran-4-one |
| CAS Number | 520-45-6 |
| EINECS | 208-293-9 |
| FDA UNII | 2KAG279R6R |
| Molecular Formula | C8 H8 O4 |
| Molecular Weight | 168.14856000 |
| MDL Number | MFCD00066709 |
| Beilstein | 0006129 |
Regulatory
| FDA Mainterm (SATF) | 520-45-6 ; DEHYDROACETIC ACID |
| FDA Regulation | FDA PART 172 -- FOOD ADDITIVES PERMITTED FOR DIRECT ADDITION TO FOOD FOR HUMAN CONSUMPTION |
Physical Properties
| Appearance | white powder (est) |
| Assay | 95.00 to 100.00 |
| Food Chemicals Codex Listed | No |
| Melting Point | 108.00 to 109.00 °C. @ 760.00 mm Hg |
| Boiling Point | 270.00 °C. @ 760.00 mm Hg |
| Flash Point | 315.00 °F. TCC ( 157.22 °C. ) |
| logP (o/w) | 0.221 (est) |
| Soluble in | water, 690 mg/L @ 25 °C (exp) |
Cosmetic Information
| CosIng | cosmetic data |
| Cosmetic Uses | preservatives |
Organoleptic Properties
| Taste Description | faint acid |
Safety Information
| Preferred SDS | View |
| European information | Most important hazard(s): |
| Oral/Parenteral Toxicity | oral-rat LD50 500 mg/kg |
| Dermal Toxicity | skin-rabbit LDLo 5000 mg/kg |
| Inhalation Toxicity | Not determined |
GHS Classification
['GHS Classification in accordance with 29 CFR 1910 (OSHA HCS)', 'GHS Label elements, including precautionary statements']
Safety in Use
| Category | preservative for cut or peeled squash |
| Recommendation for dehydroacetic acid usage levels up to | not for fragrance use. |
| Recommendation for dehydroacetic acid flavor usage levels up to | not for flavor use. |
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Potential Uses
Natural Occurrence
Synonyms
3-
acetyl-2-hydroxy-6-methyl-4H-pyran-4-one
3-
acetyl-2-hydroxy-6-methylpyran-4-one
3-
acetyl-4-hydroxy-6-methyl-2H-pyran-2-one
2-
acetyl-5-hydroxy-3-oxo-4-hexenoic acid delta-lactone
2-
acetyl-5-hydroxy-3-oxo-4-hexenoic acid, d-lactone
3-
acetyl-6-methyl-1,2-pyran-2,4(3H)-dione
3-
acetyl-6-methyl-2,4-pyrandione
3-
acetyl-6-methyl-2H-pyran-2,4(3H)-dione
biocide 470F
dehydracetic acid
DHA
4-
hexenoic acid, 2-acetyl-5-hydroxy-3-oxo-, d-lactone
methyl acetopyronone
methylacetopyronone
2H-
pyran-2-one, 3-acetyl-4-hydroxy-6-methyl-
2H-
pyran-2,4(3H)-dione, 3-acetyl-6-methyl-
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