Dehydroacetic acid. CAS NO.520-45-6

Product Name:    Dehydroacetic acid
Synonyms:    3-Acetyl-6-methyl-2H-pyran-2,4(3H)-dione. enol form;3-acetyl-6-methyl-2h-pyran-2,4(3h)-dione.enolform;3-acetyl-6-methyl-2h-pyran-2,4(3h)-dioneenolform;3-acetyl-6-methyl-2h-pyran-4(3h)-dione;3-Acetyl-6-Methyldihydropyrandione-2,4;3-Acetyl-6-methylpyrandione-2,4;4(3H)-dione,3-acetyl-6-methyl-2H-Pyran-2;4-Hexenoic acid, 2-acetyl-5-hydroxy-3-oxo-, delta-lactone
CAS:    520-45-6
MF:    C8H8O4
MW:    168.15
Mol File:    520-45-6.mol

Dehydroacetic acid Chemical Properties
Melting point     111-113 °C (lit.)
Boiling point     270 °C (lit.)
density     1.1816 (rough estimate)
vapor pressure     0.001 hPa (20 °C)
refractive index     1.4611 (estimate)
Fp     157°C
storage temp.     Store below +30°C.
solubility     2g/l
pka    5.53±0.40(Predicted)
form     Fine Crystalline Powder
color     Light yellow or cream
PH    4 (2g/l, H2O, 20℃)
Merck     14,2865
BRN     6129
Stability:    Stable. Incompatible with oxidizing agents, bases, reducing agents.
InChIKey    PGRHXDWITVMQBC-UHFFFAOYSA-N
CAS DataBase Reference    520-45-6(CAS DataBase Reference)
NIST Chemistry Reference    Dehydroacetic Acid(520-45-6)
EPA Substance Registry System    3-Acetyl-6-methyl-2H-pyran-2,4(3H)-dione (520-45-6)
Safety Information
Hazard Codes     Xn
Risk Statements     22
Safety Statements     22-26
WGK Germany     1
RTECS     UP8050000
Autoignition Temperature    336 °C
TSCA     Yes
HS Code     29322980
Hazardous Substances Data    520-45-6(Hazardous Substances Data)
Toxicity    LD50 orally in rats: 1000 mg/kg (Spencer)