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Mesityl oxide



Mesityl oxide
IUPAC name IUPAC
Other names Mesityl oxide
Isobutenyl methyl ketone
Methyl isobutenyl ketone
Isopropylidene acetone
Identifiers
CAS number 141-79-7
RTECS number SB4200000
SMILES CC(C)=CC(C)=O
Properties
Molecular formula C6H10O
Molar mass 98.14 g/mol
Density 0.858 g/cm³
Melting point

-53 °C

Boiling point

129 °C

Solubility in water good
Solubility in other solvents organic solvents
Refractive index (nD) 1.442
Hazards
Main hazards flammable
R-phrases 10-20/21/22
S-phrases 25
Flash point 87 °F
Related Compounds
Related compounds diacetone alcohol
acetone,
benzylidene acetone
Except where noted otherwise, data are given for
materials in their standard state
(at 25 °C, 100 kPa)

Infobox disclaimer and references

Mesityl oxide is a ketone with the formula CH3C(O)CH=C(CH3)2. This compound is a colorless, volatile liquid with a strong peppermint odor.

Additional recommended knowledge

Synthesis

It is prepared by the condensation of acetone to give diacetone alcohol, which readily dehydrates to give this compound. This type of reaction is called aldol reaction.


A further condensation yields isophorone, which is also used as solvent.

Uses

Mesityl oxide is used as a solvent and in the production of methyl isobutyl ketone.

References

    • Merck Index, 11th Edition, 5811.
    • Organic Syntheses, Coll. Vol. 1, p. 345 (1941)
     
    This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Mesityl_oxide". A list of authors is available in Wikipedia.
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