2-Ethylhexanoic acid CAS#149-57-5

Boiling point 

228 °C(lit.)

density 

0.906

vapor density 

4.98 (vs air)

vapor pressure 

<0.01 mm Hg ( 20 °C)

refractive index 

n20/D 1.425(lit.)

Fp 

230 °F

storage temp. 

Store below +30°C.

solubility 

1.4g/l

form 

Liquid

pka

pK1:4.895 (25°C)

color 

Clear

Odor

Mild odour

PH

3 (1.4g/l, H2O, 20℃)

PH Range

3 at 1.4 g/l at 20 °C

biological source

synthetic

explosive limit

1.04%, 135°F

Water Solubility 

2 g/L (20 ºC)

BRN 

1750468

Exposure limits

ACGIH: TWA 5 mg/m3

Stability:

Stable. Combustible. Incompatible with strong oxidizing agents, reducing agents, bases.

InChI

1S/C8H16O2/c1-3-5-6-7(4-2)8(9)10/h7H,3-6H2,1-2H3,(H,9,10)

InChIKey

OBETXYAYXDNJHR-UHFFFAOYSA-N

SMILES

CCCCC(CC)C(O)=O

LogP

2.7 at 25℃

CAS DataBase Reference

149-57-5(CAS DataBase Reference)

NIST Chemistry Reference

Hexanoic acid, 2-ethyl-(149-57-5)

EPA Substance Registry System

2-Ethylhexanoic acid (149-57-5)

Safety Information

Risk Statements 

63-41-37/38-20/21/22

Safety Statements 

36/37-36/37/39-26-2

RIDADR 

UN 3265 8/PG 2

WGK Germany 

1

RTECS 

MO7700000

F 

13

Autoignition Temperature

699 °F

TSCA 

TSCA listed

HazardClass 

8

PackingGroup 

III

HS Code 

29159080

Storage Class

6.1C - Combustible acute toxic Cat.3
toxic compounds or compounds which causing chronic effects

Hazard Classifications

Repr. 1B

Hazardous Substances Data

149-57-5(Hazardous Substances Data)

Toxicity

LD50 orally in Rabbit: 3640 mg/kg LD50 dermal Rabbit > 2000 mg/kg