ISOBUTYRIC ACID N-PROPYL ESTER Chemical Properties

Melting point:

-95.2°C (estimate)

Boiling point:

134 °C(lit.)

Density 

0.863 g/mL at 25 °C(lit.)

refractive index 

n20/D 1.395(lit.)

FEMA 

2936 | PROPYL ISOBUTYRATE

Flash point:

80 °F

form 

clear liquid

color 

Colorless to Almost colorless

Odor

at 100.00 %. sweet ripe fruity tropical melon berry

Odor Type

fruity

JECFA Number

187

LogP

2.12

CAS DataBase Reference

644-49-5(CAS DataBase Reference)

NIST Chemistry Reference

N-Propyl iso-butyrate(644-49-5)

Safety Information

Risk Statements 

10

Safety Statements 

16

RIDADR 

UN 3272 3/PG 3

WGK Germany 

3

HazardClass 

3

PackingGroup 

III

HS Code 

29156000

MSDS

• Language:English Provider:SigmaAldrich

ISOBUTYRIC ACID N-PROPYL ESTER Usage And Synthesis

Chemical Properties

Propyl isobutyrate has a pineapple-like odor and a corresponding sweet flavor.

Occurrence

Reported found in several natural products including apple, olive, spineless monkey orange, Gruyere de Comte cheese, honey, hop oil, olives and Roman chamomile oil.

Uses

Propyl Isobutyrate finds some use in flavor compositions for imitation Apple, Banana, Gooseberry, Apricot, Mirabelle, Pineapple, Plum, Strawberry, etc. and will constitute about 5 to 25 ppm of the finished product.

Preparation

From propyl alcohol and isobutyric acid in benzene solution in the presence of concentrated H2SO4.

Definition

ChEBI: Propyl 2-methylpropanoate is a carboxylic ester.

Aroma threshold values

Detection: 0.086 to 0.43 ppb

Taste threshold values

Taste characteristics at 5 to 15 ppm: sweet, fruity, with ripe, tropical, tutti-fruiti and citrus melon nuances.

ISOBUTYRIC ACID N-PROPYL ESTER(644-49-5)Related Product Information

• ISOBUTYRIC ACID PHENYL ESTER
• Isobutyric anhydride
• Hexyl isobutyrate
• Isobutyl isobutyrate
• Phenethyl isobutyrate
• Vanillin isobutyrate
• Butyl isobutyrate
• Ethyl isobutyrylacetate
• NERYL ISOBUTYRATE
• Ethyl vanillin isobutyrate
• GERANYL ISOBUTYRATE
• OCTYL ISOBUTYRATE
• Isobutyric acid
• Methyl isobutyrate
• CINNAMYL ISOBUTYRATE
• Isopentyl isobutyrate
• Benzyl isobutyrate
• Methyl isobutyrylacetate