ISOBUTYRIC ACID ISOPROPYL ESTER Chemical Properties

Melting point:

-95.2°C (estimate)

Boiling point:

120 °C

Density 

0.85

refractive index 

n20/D 1.388(lit.)

FEMA 

2937 | ISOPROPYL ISOBUTYRATE

Flash point:

20 °C

form 

clear liquid

color 

Colorless to Almost colorless

Odor

Very diffusive, light, refreshingly fruity odor

Odor Type

fruity

Odor Threshold

0.035ppm

JECFA Number

309

LogP

1.93

CAS DataBase Reference

617-50-5(CAS DataBase Reference)

EPA Substance Registry System

Propanoic acid, 2-methyl-, 1-methylethyl ester (617-50-5)

Safety Information

Hazard Codes 

F

Risk Statements 

11

Safety Statements 

16

RIDADR 

2406

RTECS 

NQ5320000

HS Code 

2915.60.5000

HazardClass 

3.1

PackingGroup 

II

ISOBUTYRIC ACID ISOPROPYL ESTER Usage And Synthesis

Description

Isopropyl isobutyrate has an intense, fruity, ether-like odor. May be prepared by boiling isobutyryl chloride and isopropyl alcohol.

Chemical Properties

Isopropyl isobutyrate has an intense, fruity, ether-like odor

Occurrence

Reported found in laurel.

Uses

Isopropyl Isobutyrate is a useful reactant in organic synthesis.
It is also used occasionally in flavor compositions as a modifier for higher and lower alkylbutyrates in Pineapple, Apricot, Pear and in certain types of Citrus complex flavors. It is the lightest and freshest tasting of all four Propylbutyrates. The concentration of this ester in finished products will vary from 10 to 100 ppm.

Preparation

By boiling isobutyl chloride and isopropyl alcohol.

Definition

ChEBI: Isopropyl 2-methylpropanoate is a carboxylic ester.

Aroma threshold values

Detection: 26 to 60 ppb

General Description

A colorless liquid. Flash point near 30°F. Boiling point near 280°F. Less dense than water. Vapors heavier than air. Used as a solvent and to make flavorings.

Air & Water Reactions

Highly flammable. Soluble in water.

Reactivity Profile

ISOBUTYRIC ACID ISOPROPYL ESTER is an ester. Esters react with acids to liberate heat along with alcohols and acids. Strong oxidizing acids may cause a vigorous reaction that is sufficiently exothermic to ignite the reaction products. Heat is also generated by the interaction of esters with caustic solutions. Flammable hydrogen is generated by mixing esters with alkali metals and hydrides.

Health Hazard

Inhalation or contact with material may irritate or burn skin and eyes. Fire may produce irritating, corrosive and/or toxic gases. Vapors may cause dizziness or suffocation. Runoff from fire control may cause pollution.

Fire Hazard

HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames. Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated. Many liquids are lighter than water.

ISOBUTYRIC ACID ISOPROPYL ESTER(617-50-5)Related Product Information

• 2,2-DIMETHYL-5-PHENYL-1,3-DIOXANE-4,6-DIONE
• Atropine
• 2,2,5-Trimethyl-1,3-dioxane-4,6-dione
• pentapiperium metilsulfate
• 6,6-DIMETHYL-5,7-DIOXASPIRO[2.5]OCTANE-4,8-DIONE
• SUCROSE ACETATE ISOBUTYRATE
• (+)-CAMPHANIC ACID CHLORIDE
• Scopolamine hydrobromide
• Butyric Acid
• 5-BROMO-2.2.5-TRIMETHYL-1.3-DIOXANE-4.6-DIONE
• FMOC-GLA(OTBU)2-OH
• CHOLESTERYL ISO-BUTYRATE
• TERT-BUTYL ALPHA-HYDROXYISOBUTYRATE
• NONACTIN
• ATROPINE N-OXIDE HYDROCHLORIDE
• (1R)-(+)-CAMPHANIC ACID
• Z-D-GLA(OTBU)2-OH
• 5-(1H-INDOL-3-YLMETHYL)-2,2-DIMETHYL-1,3-DIOXANE-4,6-DIONE