Acety lacetone CAS NO 123-54-6

Acetylacetone is a derivative of acetone; chemical formula: CH3COCH2COCH3; It is colorless to pale yellow transparent liquid. It is usually the mixture is enol form and keto form which are the tautomers of each other; these two forms are in dynamic equilibrium; enol isomer forms hydrogen bonds inside the molecule; in the mixture, the keto form accounts for about 18% and enol type accounted for 82%. Cool the petroleum ether of their mixture to-78 °C so the enol will be precipitated as a solid and the two forms will be separated with each other. Upon the enol form being returned back to room temperature, the above equilibrium will be restored.

Alias:Acetylacetone; pentane-2,4-dione; pentane-2,3-dione; (3E)-4-hydroxypent-3-en-2-one; (3Z)-4-hydroxypent-3-en-2-one; Acetyl Acetone; 2,4-Pentane dione

Chemical name:2,4-Pentanedione

CAS RN:123-54-6

EINECS No.:204-634-0

Molecular formula:C5H8O2

Molecular weight:100.1158

Properties:Colorless or light yellow transparent liquid with ester smell. Melting point is -23℃, boiling point is 140.5℃, 139℃ (94.5kPa),relative density0.9753, refractive index is 1.4494, flash point is 40.56℃, soluble in water, ethanol, ether, chloroform, acetone, benzene and glacial acetic acid.

Uses:As pharmaceutical raw material and organic intermediate,or as solvent.

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