2-Octanone

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2-Octanone
Names
IUPAC name
2-octanone
Other names
Methyl hexyl ketone
Octan-2-one
Properties
C8H16O
Molar mass 128.215 g/mol
Appearance Colorless liquid
Odor Floral, green cheese-like
Density 0.815-0.817 g/cm3
Melting point −16 °C (3 °F; 257 K)
Boiling point 173–175 °C (343–347 °F; 446–448 K)
0.0899 g/100 ml (20 °C)
Solubility Miscible with acetone, diethyl ether, ethanol
Vapor pressure 1.35 mm Hg at 25 °C
Hazards
Safety data sheet Sigma-Aldrich
Flash point 52 °C (126 °F; 325 K)
Related compounds
Related compounds
3-Octanone
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

2-Octanone is an eight carbon ketone that is usually made from the oxidation of 2-octanol. It is a mobile, oily liquid with a pungent odor that can be unpleasant at high concentrations.

Properties

Chemical

2-Octanone will burn in air to release carbon dioxide and water vapor.

Physical

2-Octanone is a clear, colorless liquid. It is oily and barely soluble in water (0.899 g/L at 20 °C), although it will form emulsions. It is however soluble in alcohols and ether It has a strong odor which is reminiscent of fruity candy and blue (green) cheese, sometimes described as unripe apple.[1]

Availability

2-Octanone is only available from the major chemical suppliers and some specialty aroma compound companies.

Preparation

The simplest method of preparing 2-octanol is by the Jones oxidation of 2-octanol.
(explanation of procedure will be posted here soon -zts16)

Another method involves distilling sodium ricinoleate, obtained from castor oil, with sodium hydroxide.[2]

Projects

Handling

Safety

2-Octanone is not hazardous to handle, although it has a very strong odor that can be unpleasant to have on the skin.

Storage

There are no special storage precautions.

Disposal

Spills of 2-octanone and glassware that has been used with it can be cleaned up easily using isopropanol, acetone, or a mixture of both. Afterwards it can be successfully mopped up with water.

Complete neutralization can be done with an oxidizing mixture, like Fenton's reagent, by adding it in small amounts. Since it's not very flammable, it should be mixed with a more flammable solvent, like ethanol or acetone before burning it outside or in an incinerator.

References

http://www.thegoodscentscompany.com/data/rw1001751.html

  1. http://pubchem.ncbi.nlm.nih.gov/compound/2-octanone
  2. Lewis, R.J. Sr.; Hawley's Condensed Chemical Dictionary 14th Edition. John Wiley & Sons, Inc. New York, NY 2001., p. 737

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