3-Pentanone

• Pentan- 3-one
• Amylketone
• Dimethylaceton
• Diethyl
• Propionon
• Propionic
• Metaceton
• DEK

Volatile, flammable, colorless liquid with a sweetish, acetone- like odor

Liquid

0.81 g · cm -3

-39 ° C

102 ° C

16 hPa ( 20 ° C)

• Soluble in water (6.2 g · l-1 at 20 ° C)
• Miscible with ethanol and diethyl ether
• Methanol and acetone soluble

1.3905 (25 ° C)

Risk

2140 mg · kg -1 ( LD50, rat, oral)

Template: Infobox chemical / molecular formula search available

3-pentanone is a colorless liquid with a sweetish, acetone- like odor and belongs to the class of compounds of the ketones.

Production and representation

3-pentanone can be obtained by hydroformylation of ethylene with carbon monoxide and hydrogen. The selectivity between the two possible products (3 -pentanone and propanal ) can be shifted by the choice of suitable catalysts and conditions for 3-pentanone out.

Another route starts on the implementation of propionic acid with manganese dioxide as a catalyst.

Further, it is produced by oxidation of 3- pentanol.

Properties

The miscibility with water is limited. With increasing temperature the solubility of 3-pentanone in water decreases and increases the solubility of water in 3-pentanone.

Use

3-pentanone is employed as a solvent for organic synthesis.

Safety

The vapors of 3- pentanone combine with air to form an explosive mixture (flash point 12 ° C, ignition temperature 455 ° C).