2-Ethylbutyric acid Property

Melting point:

-16--13 °C (lit.)

Boiling point:

99-101 °C/18 mmHg (lit.)

Density 

0.92 g/mL at 25 °C (lit.)

vapor pressure 

0.08 mm Hg ( 20 °C)

refractive index 

n20/D 1.413(lit.)

FEMA 

2429 | 2-ETHYLBUTYRIC ACID

Flash point:

190 °F

storage temp. 

Store below +30°C.

solubility 

18g/l

pka

pKa: 4.751(25°C)

form 

clear liquid

color 

Colorless to Almost colorless

Odor

at 10.00 % in propylene glycol. acidic fruity whiskey dry berry

PH

3 (18g/l, H2O, 20℃)

explosive limit

1.4%(V)

Odor Type

acidic

Water Solubility 

18 g/L (20 ºC)

Merck 

14,3110

JECFA Number

257

BRN 

1098634

LogP

1.68

CAS DataBase Reference

88-09-5(CAS DataBase Reference)

NIST Chemistry Reference

Butanoic acid, 2-ethyl-(88-09-5)

EPA Substance Registry System

2-Ethylbutyric acid (88-09-5)

Safety

Hazard Codes 

C,Xn

Risk Statements 

21-36/37/38-34

Safety Statements 

26-36/37/39-45-36

RIDADR 

UN 2810 6.1/PG 3

WGK Germany 

1

RTECS 

ET1400000

Autoignition Temperature

345 °C

TSCA 

Yes

HazardClass 

8

PackingGroup 

III

HS Code 

29159080

Toxicity

LD50 orally in Rabbit: 2200 mg/kg LD50 dermal Rabbit 478 mg/kg

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H311Toxic in contact with skin

H315Causes skin irritation

H319Causes serious eye irritation

H373May cause damage to organs through prolonged or repeated exposure

Precautionary statements

P260Do not breathe dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

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

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

P314Get medical advice/attention if you feel unwell.

2-Ethylbutyric acid Chemical Properties,Usage,Production

Chemical Properties

clear colorless to light yellow liquid

Chemical Properties

2-Ethylbutyric acid has a rancid, oily-fruity, acidulous odor

Occurrence

Reported found in guava fruit, wheaten bread and cheeses (Parmesan, blue, cheddar, provolone, Romano and goat), apple, banana, grape, melon, papaya, peach, pineapple and more.

Uses

2-Ethylbutyric acid is used as the internal standard for determining volatile fatty acids (VFAs) in wastewater from the constructed wetlands. It is used in the determination of both free and fatty acids in milk and milk products by HPLC method with direct derivatisation.

Uses

2-Ethylbutyric Acid is a flavoring agent that is a clear liquid, color- less, with a rancid odor. it is miscible in alcohol and ether, sparingly soluble in water, and is obtained by chemical synthesis.

Uses

Ester formation; intermediate for drugs, dyestuffs, chemicals; flavoring.

Preparation

By catalytic oxidation of diethylacetaldehyde or by decarboxylation of diethylmalonic acid.

Definition

ChEBI: 2-Ethylbutanoic acid is a branched-chain fatty acid.

Aroma threshold values

Detection: 15 to 600 ppb

Taste threshold values

Taste characteristics at 35 ppm: acidic, fruity, tropical with a creamy aftertaste.

Safety Profile

Moderately toxic by ingestion and skin contact. An irritant to skin and mucous membranes. A severe eye irritant. See also ESTERS. Narcotic in high concentrations. Flammable liquid. To fight fire, use CO2, dry chemical, alcohol foam. When heated to decomposition it emits acrid smoke and fumes.