4-Methyl-1-phenyl-2-pentanone

Synonym(s):Benzyl isobutyl ketone

CAS NO.：5349-62-2
Empirical Formula: C12H16O
Molecular Weight: 176.25
MDL number: MFCD00015639
EINECS: 226-316-0
SAFETY DATA SHEET (SDS)
Update Date: 2026-05-28 03:14:06

4-Methyl-1-phenyl-2-pentanone Structural

What is 4-Methyl-1-phenyl-2-pentanone?

Description

4-Methyl-l-phenyl-2-pentanone has a sweet, woody, spicy odor. At low levels, it has a sweet and tart, fruity flavor. Prepared by passing phenylacetic acid and isovaleric acid over Th02 catalyst at 450 - 470°C.

Chemical properties

Colorless, oily liquid

Chemical properties

4-Methyl-1-phenyl-2-pentanone has a sweet, woody, spicy odor. At low levels, the flavor is sweet and tart

The Uses of 4-Methyl-1-phenyl-2-pentanone

4-Methyl-1-phenyl-2-pentanone is a volatile flavor and fragrance agent used as a food additive, which gives rise to a woody odour and a sweet/fruity/spicy taste.

The Uses of 4-Methyl-1-phenyl-2-pentanone

Flavoring.

Preparation

By passing phenylacetic acid and isovaleric acid over ThO2 catalyst at 450 to 470°C.

Definition

ChEBI: 4-Methyl-1-phenyl-2-pentanone is a member of benzenes.

Properties of 4-Methyl-1-phenyl-2-pentanone

Boiling point:	250-251 °C(lit.)
Density	0.949 g/mL at 25 °C(lit.)
refractive index	n20/D 1.498(lit.)
FEMA	2740 \| 4-METHYL-1-PHENYL-2-PENTANONE
Flash point:	221 °F
storage temp.	under inert gas (nitrogen or Argon) at 2-8°C
form	Liquid
color	Colorless to light yellow
Odor	at 100.00 %. sweet woody fruity spice burnt sugar
JECFA Number	828
CAS DataBase Reference	5349-62-2(CAS DataBase Reference)
NIST Chemistry Reference	Benzyl isobutyl ketone(5349-62-2)
EPA Substance Registry System	2-Pentanone, 4-methyl-1-phenyl- (5349-62-2)

Safety information for 4-Methyl-1-phenyl-2-pentanone

Signal word	Warning
Pictogram(s)	Exclamation Mark Irritant GHS07
GHS Hazard Statements	H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation
Precautionary Statement Codes	P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.