3-Heptanone (butyl ethyl ketone), is a seven carbon ketone. It is a colorless liquid with a "green odor," also described to have a fruity scent. It is often used as a perfume/fragrance, as a solvent for cellulose, nitrocellulose, or vinyl resins, and as a synthetic building block in the preparation of other organic molecules.[4]

Preparation

3-Heptanone is produced industrially through reductive condensation of propionaldehyde (propanal) with butanone (methyl ethyl ketone). This reaction yields hept-4-en-3-one, which is subsequently hydrogenated to 3-heptanone.

CH
3CH
2CHO   +   CH
3C(O)CH
2CH
3   →   CH
3CH
2C(O)CHCHCH
2CH
3   +   H
2O
CH
3CH
2C(O)CHCHCH
2CH
3   +   H
2   →   CH
3CH
2C(O)CH
2CH
2CH
2CH
3

References

  1. ^ a b c d e f NIOSH Pocket Guide to Chemical Hazards. "#0266". National Institute for Occupational Safety and Health (NIOSH).
  2. ^ http://www.chemicalbook.com/ProductMSDSDetailCB0852672_EN.htm External MSDS
  3. ^ "Ethyl butyl ketone". Immediately Dangerous to Life or Health Concentrations (IDLH). National Institute for Occupational Safety and Health (NIOSH).
  4. ^ Siegel, Hardo; Eggersdorfer, Manfred (2012). "Ketones". Ullmann's Encyclopedia of Industrial Chemistry. Vol. 20. p. 195. doi:10.1002/14356007.a15_077. ISBN 9783527306732.
Allikas: https://en.wikipedia.org/wiki/Ethyl_butyl_ketone
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