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Isobutyl propionate

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Isobutyl propionate Basic information

Product Name:
Isobutyl propionate
Synonyms:
  • Propionic acid (2-methylpropyl) ester
  • Propionic acid 2-methylpropyl ester
  • Propionic acid isobutyl
  • isobutyl propionate >=99.0%
  • Natural Isobutyl Propionate
  • i-Butylpropionat
  • Isobutyl ester of propanoic acid
  • iso-Butyl n-propionate
CAS:
540-42-1
MF:
C7H14O2
MW:
130.18
EINECS:
208-746-0
Product Categories:
  • Carbonyl Compounds
  • Esters
  • Alphabetical Listings
  • Flavors and Fragrances
  • I-L
  • C6 to C7
Mol File:
540-42-1.mol
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Isobutyl propionate Chemical Properties

Melting point:
−71 °C(lit.)
Boiling point:
66.5 °C
Density 
0.869 g/mL at 25 °C(lit.)
refractive index 
n20/D 1.397(lit.)
FEMA 
2212 | ISOBUTYL PROPIONATE
Flash point:
80 °F
storage temp. 
Flammables area
solubility 
1.7g/l
form 
Liquid
color 
Colorless
Odor
at 100.00 %. fruity green ether sweet tutti frutti banana
Odor Type
fruity
Odor Threshold
0.02ppm
explosive limit
1.1-7.5%(V)
JECFA Number
148
Merck 
14,5150
InChIKey
FZXRXKLUIMKDEL-UHFFFAOYSA-N
LogP
2.26
CAS DataBase Reference
540-42-1(CAS DataBase Reference)
NIST Chemistry Reference
Propanoic acid, 2-methylpropyl ester(540-42-1)
EPA Substance Registry System
Propanoic acid, 2-methylpropyl ester (540-42-1)
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Safety Information

Risk Statements 
10
Safety Statements 
16
RIDADR 
UN 2394 3/PG 3
WGK Germany 
2
RTECS 
UF4930000
HazardClass 
3.2
PackingGroup 
III
HS Code 
29159000

MSDS

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Isobutyl propionate Usage And Synthesis

Chemical Properties

Isobutyl propionate is a clear colorless to pale yellow liquid that has an odor similar to the corresponding ethyl ester but more refined and fresher. It has a bitter flavor. It is highly soluble in ethanol and ether but insoluble in water. It can be found naturally occurring in grapes, apples, pears, rum, and other similar products. Isobutyl propionate is mainly used in the production of fruit flavors. This compound can prepared by direct esterification or by reacting propionyl chloride with isobutyl alcohol in the presence of Mg dust in ether solution.

Occurrence

Reported found in grapes, hop oil, apple, pear, rum, apricot, melon, Gruyere and Parmesan cheese, cider, mushroom, quince, Bourbon vanilla and spineless monkey orange

Uses

manufacture of fruit essences.

Preparation

By direct esterification or by reacting propionyl chloride with isobutyl alcohol in the presence of Mg dust in ether solution.

Definition

ChEBI: 2-Methylpropyl propanoate is a carboxylic ester.

Aroma threshold values

Aroma characteristics at 1.0%: fruity, sweet, rummy, pungent, bubble gum estry with a tropical nuance

Taste threshold values

Taste characteristics at 10 ppm: sweet, fruity, banana, tutti-frutti, with rummy nuances

General Description

A colorless liquid. Flash point of 86°F. Less dense than water. Vapors heavier than air. May be mildly toxic by ingestion, inhalation and skin absorption. Used to make plastics.

Air & Water Reactions

Highly flammable. Slightly soluble in water.

Reactivity Profile

Isobutyl propionate 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

May cause toxic effects if inhaled or absorbed through skin. Inhalation or contact with material may irritate or burn skin and eyes. Fire will produce irritating, corrosive and/or toxic gases. Vapors may cause dizziness or suffocation. Runoff from fire control or dilution water 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.

Safety Profile

Mldly toxic by ingestion. Flammable when exposed to heat or flame, can react vigorously with oxidizing materials. When heated to decomposition it emits acrid smoke and irritating fumes. See also ESTERS, PROPIONIC ACID, and ISOBUTYL ALCOHOL.

Isobutyl propionate Preparation Products And Raw materials

Raw materials

Isobutyl propionateSupplier

Meryer (Shanghai) Chemical Technology Co., Ltd.
Tel
021-61259108 18621169109
Email
market03@meryer.com
Alfa Aesar
Tel
400-6106006
Email
saleschina@alfa-asia.com
TCI (Shanghai) Development Co., Ltd.
Tel
021-67121386
Email
Sales-CN@TCIchemicals.com
Energy Chemical
Tel
021-021-58432009 400-005-6266
Email
sales8178@energy-chemical.com
Shanghai Hanhong Scientific Co.,Ltd.
Tel
021-54306202 13764082696
Email
info@hanhongsci.com