2-METHYLVALERIC ACID Property

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

pka

pK1:4.782 (25°C)

form 

clear liquid

color 

Colorless to Almost colorless

Odor

at 10.00 % in dipropylene glycol. sour cheese

Odor Type

cheesy

explosive limit

1.3-63%(V)

Water Solubility 

Soluble in water(13g/L).

JECFA Number

261

BRN 

1720655

LogP

1.66

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

Hazard Codes 

C

Risk Statements 

34

Safety Statements 

26-36/37/39-45-27

RIDADR 

UN 3265 8/PG 2

WGK Germany 

3

RTECS 

YV7700000

TSCA 

Yes

HazardClass 

8

PackingGroup 

III

HS Code 

29156000

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H314Causes severe skin burns and eye damage

Precautionary statements

P280Wear protective gloves/protective clothing/eye protection/face protection.

P303+P361+P353IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P363Wash contaminated clothing before reuse.

P405Store locked up.

2-METHYLVALERIC ACID Chemical Properties,Usage,Production

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

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.

Chemical Properties

clear colorless liquid

Occurrence

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

Uses

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

Uses

(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.

Uses

Plasticizers, vinyl stabilizers, metallic salts,alkyd resins.

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