Mesityl oxide

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Mesityl oxide
Mesityl oxide
Chemical name 4-Methyl-3-penten-2-one
Other names Mesityl oxide
Isobutenyl methyl ketone
Methyl isobutenyl ketone
Isopropylidene acetone
Chemical formula C6H10O
Molecular mass 98.14 g/mol
CAS number [141-79-7]
Density 0.858 g/cm3
SMILES CC(C)=CC(C)=O
Properties
Density and phase 0.858 g/cm3
Solubility in water good
Other solvents organic solvents
Melting point -53 °C
Boiling point 129 °C
Viscosity  ? cP at ? °C
Structure
Dipole moment  ? D
Hazards
MSDS External MSDS
Main hazards flammable
NFPA 704
Flash point 87 °F
R/S statement R: 10-20/21/22
S: 25
RTECS number SB4200000
Supplementary data page
Structure and
properties
n = 1.442
Thermodynamic
data
Phase behaviour
Solid, liquid, gas
Spectral data UV, IR, NMR, MS
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. It is a This compound is a colorless, volatile liquid with a strong peppermint odor.

Contents

[edit] 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 futher condensation yields isophorone, which is also used as solvent.

[edit] Uses

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

[edit] References

  • Merck Index, 11th Edition, 5811.

[edit] External links