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Merck

538701

2-Ethylhexanoic acid

≥99%

Synonym(s):

2-Ethylcaproic acid

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About This Item

Linear Formula:
CH3(CH2)3CH(C2H5)CO2H
CAS Number:
149-57-5
Molecular Weight:
144.21
UNSPSC Code:
12352100
NACRES:
NA.22
PubChem Substance ID:
24878352
EC Number:
205-743-6
Beilstein/REAXYS Number:
1750468
MDL number:
MFCD00002675
Assay:
≥99%

Key Documents

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InChI key

OBETXYAYXDNJHR-UHFFFAOYSA-N

InChI

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

SMILES string

CCCCC(CC)C(O)=O

vapor density

4.98 (vs air)

vapor pressure

<0.01 mmHg ( 20 °C), 10 mmHg ( 115 °C)

assay

≥99%

autoignition temp.

699 °F

expl. lim.

1.04 %, 135 °F, 8.64 %, 188 °F

refractive index

n20/D 1.425 (lit.)

bp

228 °C (lit.)

density

0.903 g/mL at 25 °C (lit.)

functional group

carboxylic acid

Quality Level

200

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Application

  • A review of the environmental fate and aquatic effects of a series of C4 and C8 oxo-process chemicals.: This review assesses the environmental impact of C4 and C8 oxo-process chemicals, including 2-Ethylhexanoic acid, detailing their degradation, persistence, and effects on aquatic ecosystems (Staples, 2001).

General description

2-Ethylhexanoic acid (EHXA, 2-EHA) is an industrially important aliphatic carboxylic acid. It is widely employed as a stabilizer and a wood preservative.
It has various industrial applications, such as:
  • coolant in automotives
  • synthetic lubricant
  • wetting agent
  • co-solvent
  • drying of paints
  • defoaming agent in pesticides

pictograms

Health hazard
GHS08

signalword

Danger

hcodes

H360D

Hazard Classifications

Repr. 1B

Storage Class

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

wgk

WGK 1

flash_point_f

237.2 °F - closed cup

flash_point_c

114 °C - closed cup

ppe

Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

149-57-5

CAS No.

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Certificates of Analysis (COA)

Lot/Batch Number
MKCG2577
MKCF3828
MKCD5738
MKBW4500V
MKBW0436V

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Synthetic applications of 2-ethylhexanoic acid derived reagents.
Raju R and Prasad K.
Tetrahedron, 68(5), 1341-1349 (2012)
The developmental toxicity of 2-ethylhexanoic acid in Wistar rats.
Pennanen S, et al.
Fundamental and Applied Toxicology, 19(4), 505-511 (1992)
Elizabeth Grillo Fernandes et al.
Biomacromolecules, 5(4), 1200-1205 (2004-07-13)
The increasing effort on development of bio-based polymeric materials in recent years is motivated by the basic concept of meeting the sustainability criteria for industrial development in the third millennium. Within this framework, our research group is currently involved in
I Svechnikova et al.
The Journal of endocrinology, 194(3), 603-609 (2007-09-01)
Phthalate esters are known to exert harmful effects on mammalian reproduction and fertility, but their potential adverse effects on the hormonal functions of the ovary have not yet been elucidated in detail. Here, we investigated the effects of di-(2-ethylhexyl) phthalate
H G Wahl et al.
Journal of chromatography. B, Biomedical sciences and applications, 758(2), 213-219 (2001-08-07)
A gas chromatographic-mass spectrometric method was developed for the quantitative analysis of the three Di(2-ethylhexyl)phthalate (DEHP) metabolites, 2-ethylhexanoic acid, 2-ethyl-3-hydroxyhexanoic acid and 2-ethyl-3-oxohexanoic acid in urine. After oximation with O-(2,3,4,5,6-pentafluorobenzyl)-hydroxylamine hydrochloride and sample clean-up with Chromosorb P filled glass tubes
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