2-METHYLVALERIC ACID

Synonym(s):(±)-2-Methylvaleric acid;2-Methylpentanoic acid;2-Methylvaleric acid;Valproic Acid Impurity L (PhEur)

CAS NO.：97-61-0
Empirical Formula: C6H12O2
Molecular Weight: 116.16
MDL number: MFCD00002671
EINECS: 202-594-9
SAFETY DATA SHEET (SDS)
Update Date: 2024-11-07 21:39:59

What is 2-METHYLVALERIC ACID?

Description

2-Methylvaleric acid has a powerful, pungent, acrid odor. Below 10 ppm the flavor is agreeable, sour, and oily. At higher concentrations, the flavor is too acidic. May be prepared by catalytic oxidation of 2-methyl pentanealdehyde; from 2-chloropentane with sodium and C02 under pressure; by decarboxylation of methyl propyl malonic acid; two optically active iosmers are known.

Chemical properties

clear colorless liquid

Chemical properties

2-Methylvaleric acid has a powerful, pungent, acrid odor. At concentrations below 10 ppm, it has an agreeable, sour, oily flavor. At higher concentrations the flavor becomes disagreeable because it is too acidic.

Occurrence

Reported found in coffee, wine, cheese, papaya, baked potato, pepper, lamb, rum, tea, mango and cherimoya

The Uses of 2-METHYLVALERIC ACID

2-Methylvaleric acid is used to produce plasticizers, vinyl stabilizers, metallic salts, and alkyd resins.

The Uses of 2-METHYLVALERIC ACID

Plasticizers, vinyl stabilizers, metallic salts,alkyd resins.

The Uses of 2-METHYLVALERIC ACID

(R,S)-2-methylvaleric acid is an intermediate in the synthesis of branched-chain. 2-Methylpentanoic acid (2-Methylvaleric acid) was used as an internal standard for gas chromatographic analysis of microbial end products.

Preparation

By catalytic oxidation of 2-methyl pentanealdehyde; from 2-chloropentane with sodium and CO2 under pressure; by decarboxylation of methyl propyl malonic acid; two optically active isomers are known

Definition

ChEBI: 2-methylvaleric acid is a methyl-branched fatty acid that is pentanoic acid which carries a methyl group at position 2. It has a role as a flavouring agent, a plant metabolite and a fragrance. It is a branched-chain saturated fatty acid, a methyl-branched fatty acid, a monocarboxylic acid and a short-chain fatty acid. It is a conjugate acid of a 2-methylvalerate.

General Description

2-Methylpentanoic acid is a volatile fatty acid found in tobacco and milk.

Flammability and Explosibility

Flammable

Properties of 2-METHYLVALERIC ACID

Melting point:	-85°C
Boiling point:	196-197 °C(lit.)
Density	0.931 g/mL at 25 °C(lit.)
refractive index	n20/D 1.414(lit.)
FEMA	2754 \| 2-METHYLVALERIC ACID
Flash point:	196 °F
storage temp.	Sealed in dry,Room Temperature
solubility	13g/l
form	clear liquid
pka	pK1:4.782 (25°C)
color	Colorless to Almost colorless
Odor	at 10.00 % in dipropylene glycol. sour cheese
explosive limit	1.3-63%(V)
Water Solubility	Soluble in water(13g/L).
JECFA Number	261
BRN	1720655
CAS DataBase Reference	97-61-0(CAS DataBase Reference)
NIST Chemistry Reference	Pentanoic acid, 2-methyl-(97-61-0)
EPA Substance Registry System	Pentanoic acid, 2-methyl- (97-61-0)

Safety information for 2-METHYLVALERIC ACID

Signal word	Danger
Pictogram(s)	Corrosion Corrosives GHS05
GHS Hazard Statements	H314:Skin corrosion/irritation
Precautionary Statement Codes	P280:Wear protective gloves/protective clothing/eye protection/face protection. P363:Wash contaminated clothing before reuse. P303+P361+P353:IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P405:Store locked up.