Pinacolone

  • Pinacolone
  • Pinacolone
  • Methyl- tert- butyl
  • 1,1,1- Trimethylaceton

Colorless liquid with a camphor - up pfefferminzartigem odor

Liquid

0.8 g · cm -3

-50 ° C

106 ° C

33 hPa ( 25 ° C)

Slightly soluble in water ( 17.7 g · l-1 at 20 ° C)

1.3960

Risk

610 mg · kg -1 ( LD50, rat, oral)

Template: Infobox chemical / molecular formula search available

3,3-dimethyl -2-butanone (also known as pinacolone ) is a chemical compound, which serves as an intermediate for the preparation of pivalic acid and other chemical compounds. It is used among other things as a starting material for the production of pharmaceuticals, fungicides and herbicides (over Triazolylpinacolon to triadimefon and metribuzin ). It is derived from the compound pinacol (or the same group of materials ).

History

The structure of pinacolone was cleared in the 19th century by Charles Friedel.

Production and representation

Pinacolone can be prepared in several ways. A path runs through the pinacol rearrangement.

Safety

Pinacolone is highly flammable (flash point at 3 ° C, self-ignition at 520 ° C) and is on the export control list, because it can be used to produce chemical weapons.

CAS registry number PubChem Vapor pressure Dangerous Substances Directive (67/548/EEC)
10182
de