Methyl 2-methylbutyrate

Synonym(s):Methyl 2-methylbutanoate

CAS NO.：868-57-5
Empirical Formula: C6H12O2
Molecular Weight: 116.16
MDL number: MFCD00009335
EINECS: 212-778-0
SAFETY DATA SHEET (SDS)
Update Date: 2025-01-27 09:38:02

What is Methyl 2-methylbutyrate?

Description

Methyl 2-methylbutyrate has a pungent, fruity odor with a sweet, fruity, apple-like taste at low levels. May be prepared from a mixture of esters including methyl 2-methylbutyrate; is obtained from isobutene, CO, and methanol under pressure, or from butene, CO, and an acid catalyst under pressure.

Chemical properties

Methyl-2-methylbutyrate has a sweet, fruity, apple-like odor and an apple-like taste at low concentrations.

Occurrence

The levorotatory and the racemic forms are known. Reported found in fresh strawberry juice, apple, apricot, sour cherry, melon, pineapple, peas, baked potato, peppermint oil, spearmint oil, thymus, durian (Durio zibethinus), olive, mushroom, starfruit, prickly pear, dill herb, cashew apple, cherimoya, loquat, mountain papaya, cape gooseberry and rooibus tea (Aspalathus linearis). bilberry, strawberry, and cheeses

The Uses of Methyl 2-methylbutyrate

DL-2-Methylbutyric Acid Methyl Ester is a volatile compound found in pineapples.
Methyl 2-methylbutyrate, only recerqly appearing on the market, finds limited use in perfumery and flavor compositions in the tedious work of reconstructing certain essential oils, mainly flavor oils. Its tremendous volatility and "lift" combined with effect of fresh greenness on a fruity base may give very attractive and natural aroma to the important topnotes of edible essential oils. It is also used as a trace component of various fruit flavors. Concentration varies from 5 to 10 ppm in the finished product.

Preparation

A mixture of esters including methyl-2-methylbutyrate is obtained from isobutene, CO and methanol under pressure, or from butene, CO and an acid catalyst under pressure.

Definition

ChEBI: Methyl (S)-2-Methylbutanoate is a fatty acid ester.

Aroma threshold values

Detection: 0.92 to 4.4 ppb

Taste threshold values

Taste characteristics at 7.5 ppm: sweet, berry, pineapple, etherial, lifting, fruity, tutti-fruitti and ripe with a fatty, green nuance

General Description

Methyl 2-methylbutyrate is an important odor-active constituent of pineapple, apple, cantaloupe, cucumber and strawberries.

Properties of Methyl 2-methylbutyrate

Melting point:	-91°C (estimate)
Boiling point:	115 °C (lit.)
Density	0.88 g/mL at 25 °C (lit.)
refractive index	n20/D 1.393(lit.)
FEMA	2719 \| METHYL 2-METHYLBUTYRATE
Flash point:	90 °F
storage temp.	Sealed in dry,Room Temperature
solubility	Very slightly soluble in water, soluble in alcohol and oils.
form	Liquid
color	Colorless to Almost colorless
Odor	at 10.00 % in dipropylene glycol. ethereal estery fruity tutti frutti green apple lily of the valley powdery fatty
JECFA Number	205
BRN	1720409
CAS DataBase Reference	868-57-5(CAS DataBase Reference)
NIST Chemistry Reference	Butanoic acid, 2-methyl-, methyl ester(868-57-5)
EPA Substance Registry System	Butanoic acid, 2-methyl-, methyl ester (868-57-5)

Safety information for Methyl 2-methylbutyrate

Signal word	Warning
Pictogram(s)	Flame Flammables GHS02
GHS Hazard Statements	H226:Flammable liquids
Precautionary Statement Codes	P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P233:Keep container tightly closed. P240:Ground/bond container and receiving equipment. P241:Use explosion-proof electrical/ventilating/lighting/…/equipment. P242:Use only non-sparking tools. P243:Take precautionary measures against static discharge.