1-HYDROXY-2-BUTANONE Chemical Properties

Melting point:

15°C (estimate)

Boiling point:

160.05°C

Density 

1.0272

refractive index 

1.4189

FEMA 

3173 | 1-HYDROXY-2-BUTANONE

storage temp. 

2-8°C

pka

12.96±0.10(Predicted)

Odor

at 10.00 % in dipropylene glycol. sweet coffee musty grain malt butterscotch

Odor Type

coffee

JECFA Number

1717

LogP

-0.25

EPA Substance Registry System

2-Butanone, 1-hydroxy- (5077-67-8)

Safety Information

RIDADR 

1993

HazardClass 

3.2

PackingGroup 

III

1-HYDROXY-2-BUTANONE Usage And Synthesis

Description

May be synthesized from l-chlorobutan-2-one by hydrolysis or by heating the chloro compound with potassium formate in methanol; the ethyl ester may be prepared by bacterial oxidation of the corresponding glycol with Aspergillus niger.

Chemical Properties

Colorless liquid

Occurrence

Reported found in coffee and mushrooms.

Definition

ChEBI: 1-hydroxybutan-2-one is a primary alpha-hydroxy ketone that is butane-1,2-diol in which the hydroxy group at position 2 has been formally oxidised to give the corresponding ketone. It is functionally related to a butan-2-one and a butane-1,2-diol.

Preparation

From 1-chlorobutan-2-one by hydrolysis or by heating the chloro compound with potassium formate in methanol; the ethyl ester may be prepared by bacterial oxidation of the corresponding glycol with Aspergillus niger.

Taste threshold values

Taste characteristics at 30 ppm: brown, oily and alcoholic with toasted grain notes.

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